NCP302HSN27T1G [ONSEMI]
Voltage Detector Series with Programmable Delay; 电压检测器系列具有可编程延迟
| 型号： | NCP302HSN27T1G |
| 厂家： | 
ONSEMI |
| 描述： | Voltage Detector Series with Programmable Delay |
| 文件： | 总26页 (文件大小：195K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCP302, NCP303
Voltage Detector Series
with Programmable Delay
The NCP302 and NCP303 series are second generation ultra−low
current voltage detectors that contain a programmable time delay
generator. These devices are specifically designed for use as reset
controllers in portable microprocessor based systems where extended
battery life is paramount.
Each series features a highly accurate undervoltage detector with
hysteresis and an externally programmable time delay generator. This
combination of features prevents erratic system reset operation.
The NCP302 series consists of complementary output devices that
are available with either an active high or active low reset. The
NCP303 series has an open drain N−Channel output with an active low
reset output.
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MARKING
DIAGRAM
5
1
TSOP−5/
SOT23−5
CASE 483
xxx AYWG
5
G
1
xxx
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
Features
A
Y
W
G
• Quiescent Current of 0.5 mA Typical
• High Accuracy Undervoltage Threshold of 2.0%
• Externally Programmable Time Delay Generator
• Wide Operating Voltage Range of 0.8 V to 10 V
• Complementary or Open Drain Output
• Active Low or Active High Reset
(Note: Microdot may be in either location)
PIN CONNECTIONS
Reset
Output
• Specified Over the −40°C to +125°C Temperature Range
(Except for Voltage Options from 0.9 to 1.1 V)
• Pb−Free Packages are Available
1
2
3
5
C
D
Input
4
N.C.
Ground
Typical Applications
(Top View)
• Microprocessor Reset Controller
• Low Battery Detection
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 22 of this data sheet.
• Power Fail Indicator
• Battery Backup Detection
NCP303LSNxxT1
NCP302xSNxxT1
Open Drain Output Configuration
Complementary Output Configuration
2
Input
2
Input
1
Reset Output
R
R
D
D
1
Reset
Output
*
V
ref
V
ref
3
GND
5
C
3
GND
5
C
D
D
* Inverter for active low devices.
* Buffer for active high devices.
This device contains 28 active transistors.
Figure 1. Representative Block Diagrams
© Semiconductor Components Industries, LLC, 2006
1
Publication Order Number:
May, 2006 − Rev. 19
NCP302/D
NCP302, NCP303
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Power Supply Voltage (Pin 2)
Delay Capacitor Pin Voltage (Pin 5)
V
12
V
V
in
V
CD
−0.3 to V + 0.3
in
Output Voltage (Pin 1)
V
OUT
V
Complementary, NCP302
N−Channel Open Drain, NCP303
−0.3 to V + 0.3
in
−0.3 to 12
Output Current (Pin 1) (Note 2)
Thermal Resistance Junction−to−Air
Maximum Junction Temperature
I
70
mA
°C/W
°C
OUT
R
250
q
JA
All NCP Options
All NCV Options
T
J
+125
+150
Operating Ambient Temperature Range
All Voltage Options: 0.9 V to 1.1 V
All Voltage Options: 1.2 V to 4.9 V
T
T
A
−40 to +85
−40 to +125
°C
°C
A
Storage Temperature Range
Moisture Sensitivity Level
T
−55 to +150
1
°C
stg
MSL
Latchup Performance (Note 3)
I
mA
LATCHUP
Positive
Negative
200
200
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL−STD−883, Method 3015.
Machine Model Method 200 V.
2. The maximum package power dissipation limit must not be exceeded.
T
* T
J(max)
A
P
+
D
R
qJA
3. Maximum ratings per JEDEC standard JESD78.
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2
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (For all values T = −40°C to +125°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3 − 0.9 (T = 255C for voltage options from 0.9 to 1.1 V)
A
Detector Threshold (Pin 2, V Decreasing)
V
0.882
0.027
0.900
0.045
0.918
0.063
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
in
Supply Current (Pin 2)
I
in
mA
(V = 0.8 V)
−
−
0.20
0.45
0.6
1.2
in
(V = 2.9 V)
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
(T = −40°C to 85°C)
A
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
mA
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
0.05
0.05
0.50
−
−
in
= 0.50V, V = 0.85V)
in
Pch Source Current, NCP302
(V = 2.4V, V = 4.5V)
1.0
6.0
2.5
−
−
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
OUT
(V
OUT
= 0.5 V, V = 1.5 V)
1.05
in
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.014
0.04
0.08
−
−
in
= GND, V = 0.8 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
in
V
TCD
V
D
(V = 0.99 V)
0.50
0.67
0.84
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
10
120
300
−
−
in
CD
(V = 0.85 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
NCP302/3 − 1.8
R
0.5
1.0
2.0
MW
D
Detector Threshold (Pin 2, V Decreasing) (T = 25°C)
A
V
DET−
1.764
1.746
1.800
−
1.836
1.854
V
in
A
(T = −40°C to 125°C)
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
0.054
0.090
0.126
V
in
Supply Current (Pin 2)
I
in
mA
(V = 1.7 V)
−
−
0.23
0.48
0.7
1.3
in
(V = 3.8 V)
in
Maximum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
Minimum Operating Voltage (Pin 2) (T = 25°C)
V
−
−
0.55
0.65
0.70
0.80
A
in(min)
(T = −40°C to 125°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
mA
V
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
1.0
0.05
2.0
−
−
in
= 0.50V, V = 1.5V)
in
Pch Source Current, NCP302
(V = 2.4V, V = 4.5V)
1.0
6.3
6.0
11
−
−
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
OUT
(V
OUT
= 0.5 V, V = 5.0 V)
in
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.525
0.04
0.6
−
−
in
= GND, V = 1.5 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
V
TCD
D
(V = 1.98 V)
in
0.99
1.34
1.68
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3
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (continued) (For all values T = −40°C to +125°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3 − 1.8
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
200
120
1600
−
−
in
CD
(V = 1.5 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
NCP302/3 − 2.0
R
0.5
1.0
2.0
MW
D
Detector Threshold (Pin 2, V Decreasing) (T = 25°C)
A
V
DET−
1.96
1.94
2.00
−
2.04
2.06
V
in
A
(T = −40°C to 125°C)
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
0.06
0.10
0.14
V
in
Supply Current (Pin 2)
I
in
mA
(V = 1.9 V)
−
−
0.23
0.48
0.8
1.3
in
(V = 4.0 V)
in
Maximum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
Minimum Operating Voltage (Pin 2) (T = 25°C)
V
−
−
0.55
0.65
0.70
0.80
A
in(min)
(T = −40°C to 125°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
mA
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
1.0
0.14
3.5
−
−
in
= 0.50V, V = 1.5V)
in
Pch Source Current, NCP302
(V = 2.4V, V = 4.5V)
1.0
6.3
9.7
11
−
−
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
OUT
(V
OUT
= 0.5 V, V = 5.0 V)
in
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.525
0.04
0.6
−
−
in
= GND, V = 1.5 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
in
V
TCD
V
D
(V = 2.2 V)
1.10
1.49
1.87
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
200
250
3600
−
−
in
CD
(V = 1.5 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
NCP302/3− 2.7
R
0.5
1.0
2.0
MW
D
Detector Threshold (Pin 2, V Decreasing) (T = 25°C)
A
V
DET−
2.646
2.619
2.700
−
2.754
2.781
V
in
A
(T = −40°C to 125°C)
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
0.081
0.135
0.189
V
in
Supply Current (Pin 2)
I
in
mA
(V = 2.6 V)
−
−
0.25
0.50
0.8
1.3
in
(V = 4.7 V)
in
Maximum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
Minimum Operating Voltage (Pin 2) (T = 25°C)
V
−
−
0.55
0.65
0.70
0.80
A
in(min)
(T = −40°C to 125°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
mA
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
1.0
0.14
3.5
−
−
in
= 0.50V, V = 1.5V)
in
Pch Source Current, NCP302
(V = 2.4V, V = 4.5V)
1.0
6.3
9.7
11
−
−
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
OUT
(V
OUT
= 0.5 V, V = 5.0 V)
in
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4
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (continued) (For all values T = −40°C to +125°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3− 2.7
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.525
0.04
0.6
−
−
in
= GND, V = 1.5 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
in
V
TCD
V
D
(V = 2.97 V)
1.49
2.01
2.53
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
200
250
3600
−
−
in
CD
(V = 1.5 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
NCP302/3 − 3.0
R
0.5
1.0
2.0
MW
D
Detector Threshold (Pin 2, V Decreasing) (T = 25°C)
A
V
DET−
2.94
2.91
3.00
−
3.06
3.09
V
in
A
(T = −40°C to 125°C)
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
0.09
0.15
0.21
V
in
Supply Current (Pin 2)
I
in
mA
(V = 2.87 V)
−
−
0.25
0.50
0.9
1.3
in
(V = 5.0 V)
in
Maximum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
Minimum Operating Voltage (Pin 2) (T = 25°C)
V
−
−
0.55
0.65
0.70
0.80
A
in(min)
(T = −40°C to 125°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
mA
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
1.0
0.14
3.5
−
−
in
= 0.50V, V = 1.5V)
in
Pch Source Current, NCP302
(V = 2.4V, V = 4.5V)
1.0
6.3
9.7
11
−
−
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
OUT
(V
OUT
= 0.5 V, V = 5.0 V)
in
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.525
0.04
0.6
−
−
in
= GND, V = 1.5 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
in
V
TCD
V
D
(V = 3.3 V)
1.65
2.23
2.81
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
200
250
3600
−
−
in
CD
(V = 1.5 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
NCP302/3 − 4.5
R
0.5
1.0
2.0
MW
D
Detector Threshold (Pin 2, V Decreasing) (T = 25°C)
A
V
DET−
4.410
4.365
4.500
−
4.590
4.635
V
in
A
(T = −40°C to 125°C)
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
0.135
0.225
0.315
V
in
Supply Current (Pin 2)
I
in
mA
(V = 4.34 V)
−
−
0.33
0.52
1.0
1.4
in
(V = 6.5 V)
in
Maximum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
Minimum Operating Voltage (Pin 2) (T = 25°C)
V
−
−
0.55
0.65
0.70
0.80
A
in(min)
(T = −40°C to 125°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
1.0
0.05
2.0
−
−
in
= 0.50V, V = 1.5V)
in
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5
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (continued) (For all values T = −40°C to +125°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
1.5
6.3
Typ
10.5
11
Max
−
Unit
NCP302/3 − 4.5
Pch Source Current, NCP302
(V = 5.9V, V = 8.0V)
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(V
OUT
= 0.5 V, V = 5.0 V)
−
in
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.525
0.04
0.6
−
−
in
= GND, V = 1.5 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
in
V
TCD
V
D
(V = 4.95 V)
2.25
3.04
3.83
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
200
120
1600
−
−
in
CD
(V = 1.5 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
NCP302/3 − 4.7
R
0.5
1.0
2.0
MW
D
Detector Threshold (Pin 2, V Decreasing) (T = 25°C)
A
V
DET−
4.606
4.559
4.700
−
4.794
4.841
V
in
A
(T = −40°C to 125°C)
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
0.141
0.235
0.329
V
in
Supply Current (Pin 2)
I
in
mA
(V = 4.54 V)
−
−
0.34
0.53
1.0
1.4
in
(V = 6.7 V)
in
Maximum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
Minimum Operating Voltage (Pin 2) (T = 25°C)
V
−
−
0.55
0.65
0.70
0.80
A
in(min)
(T = −40°C to 125°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
I
mA
mA
OUT
Nch Sink Current, NCP302, NCP303
(V
OUT
(V
OUT
= 0.05V, V = 0.70V)
0.01
1.0
0.05
2.0
−
−
in
= 0.50V, V = 1.5V)
in
Pch Source Current, NCP302
(V = 5.9V, V = 8.0V)
1.5
6.3
10.5
11
−
−
OUT
in
Reset Output Current (Pin 1, Active High ‘H’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
OUT
(V
OUT
= 0.5 V, V = 5.0 V)
in
Pch Source Current, NCP302
(V
OUT
(V
OUT
= 0.4 V, V = 0.7 V)
0.011
0.525
0.04
0.6
−
−
in
= GND, V = 1.5 V)
in
C
Delay Pin Threshold Voltage (Pin 5)
in
V
TCD
V
D
(V = 5.17 V)
2.59
3.49
4.40
Delay Capacitor Pin Sink Current (Pin 5)
I
mA
CD
(V = 0.7 V, V = 0.1V)
2.0
200
120
1600
−
−
in
CD
(V = 1.5 V, V = 0.5V)
in
CD
Delay Pullup Resistance (Pin 5)
R
0.5
1.0
2.0
MW
D
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NCP302, NCP303
NCP302L
NCP303L
V
DET+
+ 2.0 V
V
DET+
+ 2.0 V
Input Voltage,
Pin 2
0.7 V
GND
0.7 V
GND
V
+ 2.0 V
5.0 V
2.5 V
GND
DET+
V
+ 2.0 V
2
DET+
Reset Output
Voltage, Pin 1
GND
t
D1
t
D2
t
D1
t
D2
NCP302 and NCP303 series are measured with a 10 pF capacitive load. NCP303 has an additional 470 k pullup resistor
connected from the reset output to +5.0 V. The reset output voltage waveforms are shown for the active low ‘L’ devices. Output
time delay t and t are dependent upon the delay capacitance. Refer to Figures 30, 31, and 32. The upper detector
D1
D2
threshold, V
is the sum of the lower detector threshold, V
plus the input hysteresis, V
.
DET+
DET−
HYS
Figure 2. Measurement Conditions for tD1 and tD2
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NCP302, NCP303
Table 1. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 − 4.9 V
Pch
Supply Current
Nch Sink Current
Detector Threshold
Hysteresis
Source
Current
V
Low
V
High
V
Low
V
in
High
(mA)
NCP302 Series
Detector Threshold
in
in
in
I
in
(mA)
I
in
(mA)
I
(mA)
I
I
(mA)
OUT
OUT
OUT
(Note 5)
(Note 6)
(Note 7)
(Note 8)
(Note 9)
V
DET−
(V) (Note 4)
V
HYS
(V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
Typ
NCP302LSN09T1
NCP302LSN15T1
NCP302LSN18T1
NCP302LSN20T1
NCP302LSN27T1
NCP302LSN30T1
NCP302LSN33T1
NCP302LSN38T1
NCP302LSN40T1
NCP302LSN43T1
NCP302LSN45T1
NCP302LSN47T1
0.882
1.470
1.764
1.960
2.646
2.940
3.234
3.724
3.920
4.214
4.410
4.606
0.9
1.5
1.8
2.0
2.7
3.0
3.3
3.8
4.0
4.3
4.5
4.7
0.918 0.027 0.045 0.063
1.530 0.045 0.075 0.105
1.836 0.054 0.090 0.126
2.040 0.060 0.100 0.140
2.754 0.081 0.135 0.189
3.060 0.090 0.150 0.210
3.366 0.099 0.165 0.231
3.876 0.114 0.190 0.266
4.080 0.120 0.200 0.280
4.386 0.129 0.215 0.301
4.590 0.135 0.225 0.315
4.794 0.141 0.235 0.329
0.20
0.45
0.05
0.5
2.0
0.23
0.25
0.48
0.50
3.0
0.33
0.34
0.52
0.53
4. Values shown apply at +25°C only. For voltage options greater than 1.1 V, V
limits over operating temperature range (−40°C to +125°C)
DET−
are V
3%. For voltage options < 1.2 V, V
is guaranteed only at +25°C.
NOM
DET−
5. Condition 1: 0.9 — 2.9 V, V = V
− 0.10 V; 3.0 — 3.9 V, V = V
− 0.13 V; 4.0 — 4.9 V, V = V
− 0.16 V
in
DET−
in
DET−
in
DET−
6. Condition 2: 0.9 — 4.9 V, V = V
+ 2.0 V
in
DET−
7. Condition 3: 0.9 — 4.9 V, V = 0.7 V, V
= 0.05 V, Active Low ‘L’ Suffix Devices
in
OUT
8. Condition 4: 0.9 — 1.0 V, V = 0.85 V, V
= 0.5 V; 1.1 — 1.5 V, V = 1.0 V, V
= 0.5 V; 1.6 — 4.9 V, V = 1.5 V, V
= 0.5 V,
in
OUT
in
OUT
in
OUT
Condition 4: Active Low ‘L’ Suffix Devices
9. Condition 5: 0.9 — 3.9 V, V = 4.5 V, V
= 2.4 V; 4.0 — 4.9 V, V = 8.0 V, V
= 5.9 V, Active Low ‘L’ Suffix Devices
in
OUT
in
OUT
Table 2. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 − 4.9 V
Detector Threshold
Supply Current
Pch Source Current
Nch Sink
Current
Hysteresis
V
Low
V
High
V
in
Low
V
in
High
(mA)
NCP302 Series
Detector Threshold
in
in
in
in
I
(mA)
I
(mA)
I
(mA)
I
(mA)
I
OUT
OUT
OUT
(Note 11) (Note 12) (Note 13) (Note 14) (Note 15)
V
DET−
(V) (Note 10)
V
HYS
(V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
Typ
NCP302HSN09T1
NCP302HSN18T1
NCP302HSN27T1
NCP302HSN30T1
NCP302HSN40T1
NCP302HSN45T1
0.882
1.764
2.646
2.940
3.920
4.410
0.9
1.8
2.7
3.0
4.0
4.5
0.918 0.027 0.045 0.063
1.836 0.054 0.090 0.126
2.754 0.081 0.135 0.189
3.060 0.090 0.150 0.210
4.080 0.120 0.200 0.280
4.590 0.135 0.225 0.315
0.20
0.23
0.25
0.45
0.48
0.50
2.5
0.04
0.08
0.33
0.52
10.Values shown apply at +25°C only. For voltage options greater than 1.1 V, V
limits over operating temperature range (−40°C to +125°C)
DET−
are V
3%. For voltage options < 1.2 V, V
is guaranteed only at +25°C.
NOM
DET−
11. Condition 1: 0.9 — 2.9 V, V = V
− 0.10 V; 3.0 — 3.9 V, V = V
− 0.13 V; 4.0 — 4.9 V, V = V
− 0.16 V
in
DET−
in
DET−
in
DET−
12.Condition 2: 0.9 — 4.9 V, V = V
+ 2.0 V
in
DET−
13.Condition 3: 0.9 — 1.4 V, V = 1.5 V, V
= 0.5 V; 1.5 — 4.9 V, V = 5.0 V, V
= 0.4 V, Active High ‘H’ Suffix Devices
= 0.5 V, Active High ‘H’ Suffix Devices
in
OUT
OUT
OUT
in
OUT
14.Condition 4: 0.9 — 4.9 V, V = 0.7 V, V
in
15.Condition 5: 0.9 — 1.0 V, V = 0.8 V, V
= GND; 1.1 — 1.5 V, V = 1.0 V, V
= GND; 1.6 — 4.9 V, V = 1.5 V, V
= GND,
in
in
OUT
in
OUT
Active High ‘H’ Suffix Devices
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8
NCP302, NCP303
Table 3. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 − 4.9 V
Supply Current
Nch Sink Current
Detector Threshold
Hysteresis
V
Low
V
High
V
Low
V
in
High
(mA)
NCP303 Series
Detector Threshold
in
in
in
in
in
I
(mA)
I
(mA)
I
(mA)
I
OUT
OUT
(Note 17)
(Note 18)
(Note 19)
(Note 20)
V
DET−
(V) (Note 16)
V
HYS
(V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
NCP303LSN09T1
NCP303LSN10T1
NCP303LSN11T1
NCP303LSN13T1
NCP303LSN14T1
NCP303LSN15T1
NCP303LSN16T1
NCP303LSN17T1
NCP303LSN18T1
NCP303LSN20T1
NCP303LSN22T1
NCP303LSN23T1
NCP303LSN24T1
NCP303LSN25T1
NCP303LSN26T1
NCP303LSN27T1
NCP303LSN28T1
NCP303LSN29T1
NCP303LSN30T1
NCP303LSN31T1
NCP303LSN32T1
NCP303LSN33T1
NCP303LSN34T1
NCP303LSN36T1
NCP303LSN38T1
NCP303LSN40T1
NCP303LSN42T1
NCP303LSN44T1
NCP303LSN45T1
NCP303LSN46T1
NCP303LSN47T1
NCP303LSN49T1
0.882
0.980
1.078
1.274
1.372
1.470
1.568
1.666
1.764
1.960
2.156
2.254
2.352
2.450
2.548
2.646
2.744
2.842
2.940
3.038
3.136
3.234
3.332
3.528
3.724
3.920
4.116
4.312
4.410
4.508
4.606
4.802
0.9
1.0
1.1
1.3
1.4
1.5
1.6
1.7
1.8
2.0
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.6
3.8
4.0
4.2
4.4
4.5
4.6
4.7
4.9
0.918
1.020
1.122
1.326
1.428
1.530
1.632
1.734
1.836
2.040
2.244
2.346
2.448
2.550
2.652
2.754
2.856
2.958
3.060
3.162
3.264
3.366
3.468
3.672
3.876
4.080
4.284
4.488
4.590
4.692
4.794
4.998
0.027
0.030
0.033
0.039
0.042
0.045
0.048
0.051
0.054
0.060
0.066
0.069
0.072
0.075
0.078
0.081
0.084
0.087
0.090
0.093
0.096
0.099
0.102
0.108
0.114
0.120
0.126
0.132
0.135
0.138
0.141
0.147
0.045
0.050
0.055
0.065
0.070
0.075
0.080
0.085
0.090
0.100
0.110
0.115
0.120
0.125
0.130
0.135
0.140
0.145
0.150
0.155
0.160
0.165
0.170
0.180
0.190
0.200
0.210
0.220
0.225
0.230
0.235
0.245
0.063
0.070
0.077
0.091
0.098
0.105
0.112
0.119
0.126
0.140
0.154
0.161
0.168
0.175
0.182
0.189
0.196
0.203
0.210
0.217
0.224
0.231
0.238
0.252
0.266
0.280
0.294
0.308
0.315
0.322
0.329
0.343
0.20
0.45
0.05
0.5
1.0
2.0
0.23
0.48
0.25
0.50
0.33
0.34
0.52
0.53
16.Values shown apply at +25°C only. For voltage options greater than 1.1 V, V
limits over operating temperature range (−40°C to +125°C)
DET−
are V
3%. For voltage options < 1.2 V, V
is guaranteed only at +25°C.
NOM
DET−
17.Condition 1: 0.9 — 2.9 V, V = V
− 0.10 V; 3.0 — 3.9 V, V = V
− 0.13 V; 4.0 — 4.9 V, V = V
− 0.16 V
in
DET−
in
DET−
in
DET−
18.Condition 2: 0.9 — 4.9 V, V = V
+ 2.0 V
in
DET−
19.Condition 3: 0.9 — 4.9 V, V = 0.7 V, V
= 0.05 V, Active Low ‘L’ Suffix Devices
in
OUT
20.Condition 4: 0.9 — 1.0 V, V = 0.85 V, V
= 0.5 V; 1.1 — 1.5 V, V = 1.0 V, V
= 0.5 V; 1.6 — 4.9 V, V = 1.5 V, V
= 0.5 V,
in
OUT
in
OUT
in
OUT
Condition 4: Active Low ‘L’ Suffix Devices
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9
NCP302, NCP303
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
10.5
2.5
2.0
1.5
T = 25°C
T = 25°C
A
A
1.0
0.5
0
0
0
2.0
4.0
6.0
8.0
10
12
0
4.0
6.0
10
12
2.0
8.0
V , INPUT VOLTAGE (V)
in
V , INPUT VOLTAGE (V)
in
Figure 3. NCP302/3 Series 0.9 V
Input Current vs. Input Voltage
Figure 4. NCP302/3 Series 2.7 V
Input Current vs. Input Voltage
17.2
1.00
T = 25°C
A
2.5
2.0
1.5
0.95
0.90
V
DET+
V
DET−
1.0
0.5
0
0.85
0.80
0
2.0
4.0
6.0
8.0
10
12
−50
0
75
−25
25
50
100
V , INPUT VOLTAGE (V)
in
T , AMBIENT TEMPERATURE (°C)
A
Figure 5. NCP302/3 Series 4.5 V
Input Current vs. Input Voltage
Figure 6. NCP302/3 Series 0.9 V
Detector Threshold Voltage vs. Temperature
2.90
2.85
2.80
2.75
2.70
2.65
2.60
4.9
4.8
4.7
4.6
4.5
V
DET+
V
DET+
V
DET−
V
DET−
4.4
4.3
−50
0
75
−50
0
75
−25
25
50
100
125
−25
25
50
100
125
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 7. NCP302/3 Series 2.7 V
Detector Threshold Voltage vs. Temperature
Figure 8. NCP302/3 Series 4.5 V
Detector Threshold Voltage vs. Temperature
http://onsemi.com
10
NCP302, NCP303
1.0
0.8
0.6
0.4
3.5
3.0
2.5
2.0
1.5
T = −40°C (303L only)
A
T = 125°C (303L only)
1.0
0.5
0
A
T = 25°C (303L only)
A
0.2
0
T = −40°C (303L only)
A
T = 25°C (303L only)
A
0
0.4
V , INPUT VOLTAGE (V)
0.8
1.0
0
0.2
0.6
0.5
1.5
2.5
3.0
3.5
1.0
5.0
1.0
2.0
V , INPUT VOLTAGE (V)
in
in
Figure 9. NCP302L/3L Series 0.9 V
Reset Output Voltage vs. Input Voltage
Figure 10. NCP302L/3L Series 2.7 V
Reset Output Voltage vs. Input Voltage
6.0
5.0
4.0
3.0
2.0
1.0
0
1.6
1.4
V
= 0.5 V
OUT
T = −40°C
A
1.2
1.0
0.8
0.6
0.4
0.2
0
T = −40°C (303L only)
A
T = 25°C
A
T = 25°C (303L only)
A
T = 85°C
A
0
2.0
4.0
5.0
6.0
1.0
3.0
0
0.4
0.2
0.6
0.8
V , INPUT VOLTAGE (V)
in
V , INPUT VOLTAGE (V)
in
Figure 11. NCP302L/3L Series 4.5 V
Reset Output Voltage vs. Input Voltage
Figure 12. NCP302H/3L Series 0.9 V
Reset Output Sink Current vs. Input Voltage
12
10
20
15
10
5.0
0
V
OUT
= 0.5 V
V
= 0.5 V
OUT
T = −40°C
A
T = −40°C
A
8.0
6.0
4.0
2.0
0
T = 25°C
T = 25°C
A
A
T = 125°C
A
T = 125°C
A
0
1.0
V , INPUT VOLTAGE (V)
2.5
0.5
1.5
2.0
3.0
0
2.0
V , INPUT VOLTAGE (V)
1.0
3.0
4.0
in
in
Figure 13. NCP302H/3L Series 2.7 V
Reset Output Sink Current vs. Input Voltage
Figure 14. NCP302H/3L Series 4.5 V
Reset Output Sink Current vs. Input Voltage
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11
NCP302, NCP303
20
15
10
5.0
0
20
V
= V −2.1 V
V
= V −2.1 V
in
T = 25°C
T = 25°C
OUT
in
OUT
A
A
15
V
−1.5 V
in
in
V
−1.0 V
−0.5 V
V
in
−1.5 V
10
5.0
0
V
in
−1.0 V
V
in
V
in
−0.5 V
0
4.0
V , INPUT VOLTAGE (V)
8.0
0
8.0
2.0
6.0
10
2.0
4.0
6.0
10
V , INPUT VOLTAGE (V)
in
in
Figure 15. NCP302L Series 0.9 V
Reset Output Source Current vs. Input Voltage
Figure 16. NCP302L Series 2.7 V
Reset Output Source Current vs. Input Voltage
20
15
10
1.5
1.0
T = 25°C
A
V
OUT
= V −2.1 V
in
T = 25°C
A
V
in
= 0.85 V
V
V
−1.5 V
−1.0 V
in
in
0.5
0
V
in
= 0.7 V
5.0
0
V
in
−0.5 V
0
4.0
8.0
2.0
6.0
10
0
0.4
, OUTPUT VOLTAGE (V)
1.0
0.2
0.6
0.8
V , INPUT VOLTAGE (V)
V
OUT
in
Figure 17. NCP302L Series 4.5 V
Figure 18. NCP302H/3L Series 0.9 V
Reset Output Source Current vs. Input Voltage
Reset Output Sink Current vs. Output Voltage
15
10
35
30
25
20
15
10
5.0
0
T = 25°C
A
T = 25°C
A
V
= 2.5 V
in
V
= 4.0 V
in
V
= 3.5 V
in
V
= 2.0 V
in
V
= 3.0 V
in
V
= 2.5 V
5.0
0
in
V
in
= 1.5 V
1.0
V
= 2.0 V
in
V
in
= 1.5 V
0
1.0
2.0
3.0
4.0
0
2.5
0.5
1.5
2.0
V , OUTPUT VOLTAGE (V)
OUT
V , OUTPUT VOLTAGE (V)
OUT
Figure 19. NCP302H/3L Series 2.7 V
Reset Output Sink Current vs. Output Voltage
Figure 20. NCP302H/3L Series 4.5 V
Reset Output Sink Current vs. Output Voltage
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NCP302, NCP303
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
14
V
12
= 0.5 V
V
CD
= 0.5 V
CD
T = −40°C
A
10
8.0
6.0
4.0
2.0
0
T = 25°C
A
T = 25°C
A
T = 125°C
A
T = 85°C
A
T = −40°C
A
0
1.0
V , INPUT VOLTAGE (V)
2.5
0.5
1.5
2.0
3.0
0
0.4
V , INPUT VOLTAGE (V)
1.0
0.2
0.6
0.8
in
in
Figure 21. NCP302/3 Series 0.9 V
CD Delay Pin Sink Current vs. Input Voltage
Figure 22. NCP302/3 Series 2.7 V
CD Delay Pin Sink Current vs. Input Voltage
20
16
12
8.0
4.0
0
1.5
1.0
0.5
0
V
CD
= 0.5 V
T = 25°C
A
T = −40°C
A
V
= 0.85 V
in
T = 25°C
A
T = 125°C
A
V
in
= 0.7 V
0
2.0
V , INPUT VOLTAGE (V)
5.0
1.0
3.0
4.0
0
0.4
, DELAY PIN VOLTAGE (V)
1.0
0.2
0.6
0.8
V
CD
in
Figure 23. NCP302/3 Series 4.5 V
Figure 24. NCP302/3 Series 0.9 V
CD Delay Pin Sink Current vs. Input Voltage
CD Delay Pin Sink Current vs. Voltage
40
30
20
16
12
8.0
4.0
0
T = 25°C
A
T = 25°C
A
V
= 2.5 V
in
V
= 4.0 V
in
V
= 3.5 V
in
V
= 2.0 V
in
V
= 3.0 V
in
V
in
= 2.5 V
10
0
V
= 1.5 V
in
0
1.0
2.0
3.0
4.0
0
1.0
2.5
0.5
1.5
2.0
V
CD
, DELAY PIN VOLTAGE (V)
V
CD
, DELAY PIN VOLTAGE (V)
Figure 25. NCP302/3 Series 2.7 V
CD Delay Pin Sink Current vs. Voltage
Figure 26. NCP302/3 Series 4.5 V
CD Delay Pin Sink Current vs. Voltage
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13
NCP302, NCP303
2.2
0.9
0.8
0.7
0.6
0.5
V
in
= 0.99 V
V
in
= 2.97 V
2.1
2.0
1.9
1.8
1.7
0.4
0.3
−50
0
75
−25
25
50
100
−50
0
75
−25
25
50
100
125
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 27. NCP302/3 Series 0.9 V
CD Delay Pin Threshold Voltage vs. Temperature
Figure 28. NCP302/3 Series 2.7 V
CD Delay Pin Threshold Voltage vs. Temperature
10000
3.7
3.6
3.5
3.4
3.3
3.2
T = 25°C
V
in
= 4.95 V
A
1000
100
10
t
D1
(ms)
t
D2
(ms)
1.0
0.1
−50
0
75
0.00001
0.0001
0.01
1.0
−25
25
50
100
125
0.001
0.1
C , DELAY PIN CAPACITANCE ( mF)
D
T , AMBIENT TEMPERATURE (°C)
A
Figure 29. NCP302/3 Series 4.5 V
CD Delay Pin Threshold Voltage vs. Temperature
Figure 30. NCP302/3 Series 0.9 V
Output Time Delay vs. Capacitance
10000
10000
T = 25°C
A
T = 25°C
A
1000
100
10
1000
100
10
t
(ms)
D1
t
D1
(ms)
t
D2
(ms)
t
D2
(ms)
1.0
0.1
1.0
0.1
0.00001
0.0001
0.01
1.0
0.00001
0.0001
0.01
1.0
0.001
0.1
0.001
0.1
C , DELAY PIN CAPACITANCE ( mF)
D
C , DELAY PIN CAPACITANCE ( mF)
D
Figure 31. NCP302/3 Series 2.7 V
Output Time Delay vs. Capacitance
Figure 32. NCP302/3 Series 4.5 V
Output Time Delay vs. Capacitance
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NCP302, NCP303
160
250
200
160
120
C = 0.1 mF
D
C
= 0.1 mF
D
140
120
100
80
60
80
40
40
20
0
0
−50
0
75
−50
−25
0
25
50
75
100
125
−25
25
50
100
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 33. NCP302/3 Series 0.9 V
Figure 34. NCP302/3 Series 2.7 V
Reset Output Time Delay vs. Temperature
Reset Output Time Delay vs. Temperature
1.6
1.2
0.8
0.4
0
250
200
150
100
C
= 0.1 mF
D
50
0
−50
0
75
−25
25
50
100
−50
−25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 35. NCP302/3 Series 4.5 V
Figure 36. NCP302/3 Series
Reset Output Time Delay vs. Temperature
Delay Resistance vs. Temperature
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15
NCP302, NCP303
OPERATING DESCRIPTION
V will again return to its nominal level and become greater
in
than the V
. The voltage detector will turn off the
DET+
The NCP302 and NCP303 series devices consist of a
precision voltage detector that drives a time delay generator.
Figures 37 and 38 show a timing diagram and a typical
N−Channel MOSFET and allow pullup resistor R to charge
external capacitor C , thus creating a programmable delay
for releasing the reset signal. When the voltage at Pin 5
exceeds the inverter/buffer threshold, typically 0.675 V ,
D
D
application. Initially consider that input voltage V is at a
in
in
nominal level and it is greater than the voltage detector upper
the reset output will revert back to its original state. The reset
output time delay versus capacitance is shown in Figures 12
through 14. The voltage detector and inverter/buffer have
built−in hysteresis to prevent erratic reset operation.
Although these device series are specifically designed for
use as reset controllers in portable microprocessor based
systems, they offer a cost−effective solution in numerous
applications where precise voltage monitoring and time
delay are required. Figures 38 through 45 show various
application examples.
threshold (V
). The voltage at Pin 5 and capacitor C
DET+
D
will be at the same level as V , and the reset output (Pin 1)
will be in the high state for active low devices, or in the low
state for active high devices. If there is a power interruption
in
and V becomes significantly deficient, it will fall below the
in
lower detector threshold (V
delay capacitor C will be immediately discharged by an
internal N−Channel MOSFET that connects to Pin 5. This
sequence of events causes the Reset output to be in the low
state for active low devices, or in the high state for active
high devices. After completion of the power interruption,
) and the external time
DET−
D
V
in
Input Voltage, Pin 2
V
+
DET
V
DET−
V
in
0.675 V
Capacitor, Pin 5
in
V
in
Reset Output (Active Low), Pin 1
V
DET−
0 V
V
in
Reset Output (Active High), Pin 1
V
DET−
0 V
t
D2
Figure 37. Timing Waveforms
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16
NCP302, NCP303
APPLICATION CIRCUIT INFORMATION
V
DD
V
DD
2
Input
*
5
1
NCP302
Series
Microprocessor
Reset
C
Reset Output
D
C
D
* Required for
NCP303
3
GN-
D
GND
Figure 38. Microprocessor Reset Circuit
2.85 V
2.70 V
V
in
< 2.7 ON
2
Input
5
1
NCP302
LSN27T1
To Additional Circuitry
C
Reset Output
D
V
in
> 2.835 ON
3
GN-
D
Figure 39. Battery Charge Indicator
V
supply
5.0 V
1.0 V
0 V
470 k
2
Input
5
1
NCP303
LSN45T1
To Additional Circuitry
C
Reset Output
D
0.001 mF
C
D
Missing Pulse
3
GN-
D
Input
0 V
V
in
[0.675*V
in
C
D
Reset Output
t
D2
Figure 40. Missing Pulse Detector or Frequency Detector
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17
NCP302, NCP303
V
DD
R
H
V
DD
Input
2
R
L
1
5
NCP303
LSN27T1
Microprocessor
C
Reset
D
Reset Output
3
GN-
D
GN-
D
Figure 41. Microprocessor Reset Circuit with Additional Hysteresis
Comparator hysteresis can be increased with the addition of
Test Data
resistor R . The hysteresis equations have been simplified and
H
V
th
Decreasing
(V)
V
th
Increasing
(V)
V
(V)
R
(W)
R
L
(kW)
do not account for the change of input current I as V crosses
HYS
H
in
in
the comparator threshold. The internal resistance, R is simply
in
calculated using I = 0.26 mA at 2.6 V.
in
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.84
2.87
2.88
2.91
2.90
2.94
2.98
2.70
3.04
3.15
0.135
0.17
0.19
0.21
0.20
0.24
0.28
0.27
0.34
0.35
0
−
10
V Decreasing:
in
100
100
100
220
220
220
470
470
470
6.8
4.3
10
6.8
4.3
10
RH
Rin
ǒ
Ǔ
+ ǒ Ǔ
Vth
) 1 VDET*
V Increasing:
in
RH
6.8
4.3
ǒ
Ǔ
+ ǒ Ǔ V
Vth
) 1
DET* ) VHYS
Rin ø RL
V
HYS
= V Increasing − V Decreasing
in in
5.0 V
100 k
Test Data
(kHz)
C (mF)
0.01
0.1
f
I (mA)
Q
OSC
C
Input
2
2590
21.77
21.97
22.07
82 k
1
5
490
52
NCP302
HSN27T1
C
Reset Output
D
1.0
GN-
D
3
Figure 42. Simple Clock Oscillator
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18
NCP302, NCP303
V
supply
This circuit monitors the current at the load. As
current flows through the load, a voltage drop with
respect to ground appears across R where
Load
sense
V
DD
V
sense
= I
load
* R The following conditions apply:
sense.
If:
I
Then:
Reset Output = 0 V
Reset Output = V
DD
R
Input
2
t V
w (V
/R
sense
Load
DET− sense
50 k
I
+V
DET−
)/R
Load
HYS
sense
5
1
NCP303
LSN09T1
Microcontroller
C
Reset Output
D
GND
GND
3
Figure 43. Microcontroller Systems Load Sensing
V
supply
2
Input
5
1
NCP303
LSN45T1
C
Reset
D
Output
3
GND
Input
2
1
5
NCP303
LSN27T1
Reset
C
D
Output
GND
3
V
in
= 1.0 V to 10 V
2
Input
1
5
NCP303
LSN18T1
Reset
C
D
Output
3
GND
A simple voltage monitor can be constructed by connecting several voltage detectors as shown above. Each LED will
sequentially turn on when the respective voltage detector threshold (V +V ) is exceeded. Note that detector
DET−
HYS
thresholds (V ) that range from 0.9 V to 4.9 V in 100 mV steps can be manufactured.
DET−
Figure 44. LED Bar Graph Voltage Monitor
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19
NCP302, NCP303
V
DD
Input
2
EN
5
1
NCP302L
Series
To MCU or
Logic Circuitry
IN
C
D
Reset Output
C
Logic 1
D
3
GND
V
DD
NCP302
Input Pin
V
DET
0 V
1
Logic 1
Enable
Pin
0
V
DD
V
TCD
C
Pin
D
0 V
0 V
Reset
Output
Note: Logic 1 is in tristate when EN = 0,
t
D2
t
D2
V
TCD
ꢀ 0.675 * V
DD
Figure 45. Undervoltage Detection with Independent Reset Signal Control
This circuit monitors V for undervoltage. If the V
logic gate is tristated the undervoltage detector will behave
normally. If the tristate is de−asserted, the logic gate will pull
DD
DD
input falls below the detector threshold (V ), then the
DET−
capacitor on the C pin will be immediately discharged
the C pin low resulting in the Reset Output pin changing to
D
D
resulting in the reset output changing to its active state
indicating that an undervoltage event has been detected. The
addition of a logic gate (Logic 1) provides for reset output
an active state. This independent control is useful in power
supply sequencing applications when the Reset Output is
tied to the enable input of an LDO or DC−DC converter.
control which is independent of V . If the output of the
DD
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20
NCP302, NCP303
R1 is Optional C Pin Pullup
D
V
P
Power Supply 1
(System Core)
Input
2
R1
R
P
*
1
5
NCP302L
Series
To MCU or
Logic Circuitry
C
Reset Output
D
C
D
*Required for
NCP303
3
GND
3.3 V Power Supply 2
(I/O Subsystem)
Input
2
1
NCP301
LSN30T1
Reset Output
3
2
GND
5.0 V Power Supply 3
(Peripheral Subsystem)
Input
1
NCP301
LSN45T1
Reset Output
3
GND
V
IN
Power Supply 1
Power Supply 2
0 V
0 V
Power Supply 3
0 V
V
TCD
IN
V
C
Pin
D
0 V
NCP302L
RESET Output
0 V
Note: V
ꢀ 0.675 * V
TCD
IN
t
D2
t
D2
t
D2
t
D2
Figure 46. Multi−Rail Supply Undervoltage Monitor with Power Good
This circuit monitors multiple power supply rails for
undervoltage conditions. If any of the three power supplies
are in an undervoltage condition, the NCP302 reset output
will be immediately set to an active low level. All three
power supplies must be above their minimum voltage levels
for the NCP302 reset output to generate a “Power Good”
approximately equal to 1.0 MW, and R1 > 5 kW. If R1 << R ,
D
then R1 also can decrease the reset output delay time (t
variance over the operating temperature range.
)
D2
The Power Good signal time delay (t ) can be estimated
D2
by: t ≈ R * C , with R in Ohms, and C in Farads. If
D2
D
D
D
D
R1 is installed, then R ’ is substituted for R . R is added
D
D
P
level (Reset Output = Power Supply 1 or V ).
only if using the NCP303 to replace the NCP302. This
P
Optionally, R1 may be added to provide a smaller
allows the Reset Output to be pulled up to V , which can be
P
effective
C
D
pin pullup resistance, (R ’), where
the Power Supply 1 or an independent power supply rail.
D
R ’ = R1 || R , with R (internal C pin pullup resistance)
D
D
D
D
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21
NCP302, NCP303
ORDERING INFORMATION
Threshold
Voltage
Output
Type
†
Device
Reset
Marking
SBO
Package
Shipping
NCP302LSN09T1
NCP302LSN09T1G
0.9
TSOP−5
0.9
SBO
TSOP−5
(Pb−Free)
NCP302LSN15T1
NCP302LSN15T1G
1.5
1.5
SBI
SBI
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN18T1
NCP302LSN18T1G
1.8
1.8
SBF
SBF
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN20T1
NCP302LSN20T1G
2.0
2.0
SBD
SBD
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN27T1
NCP302LSN27T1G
2.7
2.7
SAW
SAW
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN30T1
NCP302LSN30T1G
3.0
3.0
SAT
SAT
TSOP−5
TSOP−5
(Pb−Free)
Active
Low
3000 / Tape & Reel
(7 inch Reel)
CMOS
NCP302LSN33T1
NCP302LSN33T1G
3.3
3.3
SAQ
SAQ
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN38T1
NCP302LSN38T1G
3.8
3.8
SAK
SAK
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN40T1
NCP302LSN40T1G
4.0
4.0
SAI
SAI
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN43T1
NCP302LSN43T1G
4.3
4.3
SAF
SAF
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN45T1
NCP302LSN45T1G
4.5
4.5
SAL
SAL
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN47T1
NCP302LSN47T1G
4.7
4.7
SAC
SAC
TSOP−5
TSOP−5
(Pb−Free)
NCP302HSN09T1
NCP302HSN09T1G
0.9
0.9
SDO
SDO
TSOP−5
TSOP−5
(Pb−Free)
NCP302HSN18T1
NCP302HSN18T1G
1.8
1.8
SFH
SFH
TSOP−5
Active
High
3000 / Tape & Reel
(7 inch Reel)
CMOS
TSOP−5
(Pb−Free)
NCP302HSN27T1
NCP302HSN27T1G
2.7
2.7
SDK
SDK
TSOP−5
TSOP−5
(Pb−Free)
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices,
ranging from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments
can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional
devices are shown in Tables 1 and 2.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV prefix for automotive and other applications requiring site and control changes.
NCVxxx: T = −40°C, T
= +125°C. Guaranteed by design.
low
high
http://onsemi.com
22
NCP302, NCP303
ORDERING INFORMATION
Threshold
Voltage
Output
Type
†
Device
Reset
Marking
SDI
Package
Shipping
NCP302HSN30T1
NCP302HSN30T1G
3.0
TSOP−5
3.0
SDI
TSOP−5
(Pb−Free)
NCP302HSN40T1
NCP302HSN40T1G
4.0
4.0
SJH
SJH
TSOP−5
Active
High
3000 / Tape & Reel
(7 inch Reel)
CMOS
TSOP−5
(Pb−Free)
NCP302HSN45T1
NCP302HSN45T1G
4.5
4.5
SDG
SDG
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN09T1
NCP303LSN09T1G
0.9
0.9
SDE
SDE
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN10T1G
1.0
SDD
TSOP−5
(Pb−Free)
NCV303LSN10T1*
NCV303LSN10T1G*
1.0
1.0
SSM
SSM
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN11T1
NCP303LSN11T1G
1.1
1.1
SDC
SDC
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN13T1
NCP303LSN13T1G
1.3
1.3
SDA
SDA
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN14T1
NCP303LSN14T1G
1.4
1.4
SCZ
SCZ
TSOP−5
TSOP−5
(Pb−Free)
Open
Drain
Active
Low
3000 / Tape & Reel
(7 inch Reel)
NCP303LSN15T1
NCP303LSN15T1G
1.5
1.5
SCY
SCY
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN15T1G*
1.5
SRU
TSOP−5
(Pb−Free)
NCP303LSN16T1
NCP303LSN16T1G
1.6
1.6
SCX
SCX
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN17T1
NCP303LSN18T1
NCP303LSN18T1G
1.7
1.8
1.8
SCW
SCV
SCV
TSOP−5
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN20T1
NCP303LSN20T1G
2.0
2.0
SCT
SCT
TSOP−5
TSOP−5
(Pb−Free)
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices,
ranging from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments
can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional
devices are shown in Tables 1 and 2.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV prefix for automotive and other applications requiring site and control changes.
NCVxxx: T = −40°C, T
= +125°C. Guaranteed by design.
low
high
http://onsemi.com
23
NCP302, NCP303
ORDERING INFORMATION
Threshold
Voltage
Output
Type
†
Device
Reset
Marking
SCR
Package
Shipping
NCP303LSN22T1
NCP303LSN22T1G
2.2
TSOP−5
2.2
SCR
TSOP−5
(Pb−Free)
NCP303LSN23T1
NCP303LSN23T1G
2.3
2.3
SCQ
SCQ
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN23T1G*
2.3
SRX
TSOP−5
(Pb−Free)
NCP303LSN24T1
NCP303LSN24T1G
2.4
2.4
SCP
SCP
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN25T1
NCP303LSN25T1G
2.5
2.5
SCO
SCO
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN26T1
NCP303LSN26T1G
2.6
2.6
SCN
SCN
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN27T1
NCP303LSN27T1G
2.7
2.7
SCM
SCM
TSOP−5
TSOP−5
(Pb−Free)
Open
Drain
Active
Low
3000 / Tape & Reel
(7 inch Reel)
NCP303LSN28T1
NCP303LSN28T1G
2.8
2.8
SCL
SCL
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN29T1
NCP303LSN29T1G
2.9
2.9
SCK
SCK
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN29T1*
NCV303LSN29T1G*
2.9
2.9
SSK
SSK
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN30T1
NCP303LSN30T1G
3.0
3.0
SCJ
SCJ
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN30T1*
NCV303LSN30T1G*
3.0
3.0
SSA
SSA
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN31T1
NCP303LSN31T1G
3.1
3.1
SCI
SCI
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN32T1
NCP303LSN32T1G
3.2
3.2
SCH
SCH
TSOP−5
TSOP−5
(Pb−Free)
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices,
ranging from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments
can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional
devices are shown in Tables 1 and 2.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV prefix for automotive and other applications requiring site and control changes.
NCVxxx: T = −40°C, T
= +125°C. Guaranteed by design.
low
high
http://onsemi.com
24
NCP302, NCP303
ORDERING INFORMATION
Threshold
Voltage
Output
Type
†
Device
Reset
Marking
SCG
Package
Shipping
NCP303LSN33T1
NCP303LSN33T1G
3.3
TSOP−5
3.3
SCG
TSOP−5
(Pb−Free)
NCP303LSN34T1
NCP303LSN34T1G
3.4
3.4
SCF
SCF
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN36T1
NCP303LSN36T1G
3.6
3.6
SCD
SCD
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN38T1
NCP303LSN38T1G
3.8
3.8
SCA
SCA
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN40T1
NCP303LSN40T1G
4.0
4.0
SBY
SBY
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN42T1
NCP303LSN42T1G
4.2
4.2
SBW
SBW
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN44T1
NCP303LSN44T1G
4.4
4.4
SBU
SBU
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN44T1*
NCV303LSN44T1G*
4.4
4.4
SSF
SSF
TSOP−5
Open
Drain
Active
Low
3000 / Tape & Reel
(7 inch Reel)
TSOP−5
(Pb−Free)
NCP303LSN45T1
NCP303LSN45T1G
4.5
4.5
SBT
SBT
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN45T1G*
4.5
SSG
TSOP−5
(Pb−Free)
NCP303LSN46T1
NCP303LSN46T1G
4.6
4.6
SBS
SBS
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN46T1*
NCP303LSN47T1
NCP303LSN47T1G
4.6
4.7
4.7
SSH
SBR
SBR
TSOP−5
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN47T1*
NCV303LSN47T1G*
4.7
4.7
SSJ
SSJ
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN49T1
NCP303LSN49T1G
4.9
4.9
SBP
SBP
TSOP−5
TSOP−5
(Pb−Free)
NCV303LSN49T1*
NCV303LSN49T1G*
4.9
4.9
SSI
SSI
TSOP−5
TSOP−5
(Pb−Free)
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices,
ranging from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments
can be manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional
devices are shown in Tables 1 and 2.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV prefix for automotive and other applications requiring site and control changes.
NCVxxx: T = −40°C, T
= +125°C. Guaranteed by design.
low
high
http://onsemi.com
25
NCP302, NCP303
PACKAGE DIMENSIONS
TSOP−5/THIN SOT−23−5/SC59−5
CASE 483−02
ISSUE E
NOTES:
D
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES
LEAD FINISH THICKNESS. MINIMUM LEAD
THICKNESS IS THE MINIMUM THICKNESS
OF BASE MATERIAL.
4. A AND B DIMENSIONS DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
5
4
3
B
C
S
1
2
L
G
A
MILLIMETERS
INCHES
MIN MAX
0.1142 0.1220
DIM
A
B
C
D
G
H
J
K
L
MIN
2.90
1.30
0.90
0.25
0.85
0.013
0.10
0.20
1.25
0
MAX
3.10
J
1.70 0.0512 0.0669
1.10 0.0354 0.0433
0.50 0.0098 0.0197
1.05 0.0335 0.0413
0.100 0.0005 0.0040
0.26 0.0040 0.0102
0.60 0.0079 0.0236
1.55 0.0493 0.0610
0.05 (0.002)
H
M
K
M
S
10
0
10
_
_
_
_
2.50
3.00 0.0985 0.1181
SOLDERING FOOTPRINT*
1.9
0.074
0.95
0.037
2.4
0.094
1.0
0.039
0.7
0.028
mm
inches
ǒ
Ǔ
SCALE 10:1
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
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NCP302/D
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