NCP302HSN27T1 [ONSEMI]
Voltage Detector Series with Programmable Delay; 电压检测器系列具有可编程延迟
| 型号： | NCP302HSN27T1 |
| 厂家： | 
ONSEMI |
| 描述： | Voltage Detector Series with Programmable Delay |
| 文件： | 总26页 (文件大小：190K) |
| 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.
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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.
5
1
THIN SOT23−5/TSOP−5/SC59−5
CASE 483
Features
PIN CONNECTIONS AND
MARKING DIAGRAM
• 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
Reset
Output
1
2
3
5
C
D
Input
4
N.C.
Ground
• Pb−Free Packages are Available
(Top View)
xxx =Specific Device Code
Typical Applications
Y
= Year
• Microprocessor Reset Controller
• Low Battery Detection
W
= Work Week
• Power Fail Indicator
• Battery Backup Detection
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 22 of this data sheet.
NCP303LSNxxT1
NCP302xSNxxT1
Open Drain Output Configuration
Complementary Output Configuration
2
Input
1
Reset Output
2
Input
R
R
D
D
1
Reset
Output
*
V
ref
V
ref
3
GND
5
C
D
3
GND
5
C
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, 2005
1
Publication Order Number:
January, 2005 − Rev. 14.5
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
Operating Ambient Temperature Range
Storage Temperature Range
I
70
mA
°C/W
°C
OUT
R
250
q
JA
T
J
+125
T
A
−40 to +85
−55 to +150
1
°C
T
°C
stg
Moisture Sensitivity Level (T = 235°C)
MSL
A
Latchup Performance
Positive
Negative
I
mA
LATCHUP
200
200
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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
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2
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (For all values T = 25°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3 − 0.9
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)
(V = 2.9 V)
in
−
−
0.20
0.45
0.6
1.2
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(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
mA
(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)
V
TCD
V
D
(V = 0.99 V)
in
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)
R
0.5
1.0
2.0
MW
D
NCP302/3 − 1.8
Detector Threshold (Pin 2, V Decreasing)
V
1.764
0.054
1.80
1.836
0.126
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
0.090
in
HYS
Supply Current (Pin 2)
I
in
mA
(V = 1.7 V)
(V = 3.8 V)
in
−
−
0.23
0.48
0.7
1.3
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(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
mA
(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
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3
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (continued) (For all values T = 25°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3 − 1.8
C
Delay Pin Threshold Voltage (Pin 5)
V
TCD
V
D
(V = 1.98 V)
in
0.99
1.34
1.68
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
NCP302/3 − 2.0
Detector Threshold (Pin 2, V Decreasing)
V
1.960
0.06
2.00
0.10
2.040
0.14
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
in
Supply Current (Pin 2)
I
in
mA
(V = 1.9 V)
(V = 4.0 V)
in
−
−
0.23
0.48
0.8
1.3
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(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
mA
(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
V
D
(V = 2.2 V)
in
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
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
NCP302/3− 2.7
Detector Threshold (Pin 2, V Decreasing)
V
2.646
0.081
2.700
0.135
2.754
0.189
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
in
Supply Current (Pin 2)
I
in
mA
(V = 2.6 V)
(V = 4.7 V)
in
−
−
0.26
0.46
0.8
1.3
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(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
6.0
−
OUT
in
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4
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (continued) (For all values T = 25°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3− 2.7
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)
6.3
11
−
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
V
D
(V = 2.97 V)
in
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
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
NCP302/3 − 3.0
Detector Threshold (Pin 2, V Decreasing)
V
2.94
0.09
3.00
0.15
3.06
0.21
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
in
Supply Current (Pin 2)
I
in
mA
(V = 2.87 V)
(V = 5.0 V)
in
−
−
0.27
0.47
0.9
1.3
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
mA
OUT
(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
V
D
(V = 3.3 V)
in
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
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
NCP302/3 − 4.5
Detector Threshold (Pin 2, V Decreasing)
V
4.410
0.135
4.500
0.225
4.590
0.315
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
HYS
in
Supply Current (Pin 2)
I
in
mA
(V = 4.34 V)
(V = 6.5 V)
in
−
−
0.33
0.52
1.0
1.4
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
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5
NCP302, NCP303
ELECTRICAL CHARACTERISTICS (continued) (For all values T = 25°C, unless otherwise noted.)
A
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3 − 4.5
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(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
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)
V
TCD
V
D
(V = 4.95 V)
in
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)
R
0.5
1.0
2.0
MW
D
NCP302/3 − 4.7
Detector Threshold (Pin 2, V Decreasing)
V
4.606
0.141
4.70
4.794
0.329
V
V
in
DET−
Detector Threshold Hysteresis (Pin 2, V Increasing)
V
0.235
in
HYS
Supply Current (Pin 2)
I
in
mA
(V = 4.54 V)
(V = 6.7 V)
in
−
−
0.34
0.53
1.0
1.4
in
Maximum Operating Voltage (Pin 2)
Minimum Operating Voltage (Pin 2)
V
−
−
10
V
V
in(max)
V
−
−
0.55
0.65
0.70
0.80
in(min)
(T = −40°C to 85°C)
A
Reset Output Current (Pin 1, Active Low ‘L’ Suffix Devices)
Nch Sink Current, NCP302, NCP303
I
mA
OUT
(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
mA
(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
V
D
(V = 5.17 V)
in
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 12, 13, and 14. 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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7
NCP302, NCP303
Table 1. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 − 4.9 V
Pch
Source
Current
Supply Current
Nch Sink Current
Low High
Detector Threshold
Hysteresis
V
Low
V
in
High
V
in
V
in
NCP302 Series
Detector Threshold
in
I
I
I
I
I
in
in
OUT
(3)
OUT
(4)
OUT
(5)
(1)
(2)
(mA)
(mA)
Typ
0.5
(mA)
(mA)
(mA)
V
DET−
(V)
V
HYS
(V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
0.3
Typ
Typ
Typ
NCP302LSN09T1
NCP302LSN10T1
NCP302LSN11T1
NCP302LSN12T1
NCP302LSN13T1
NCP302LSN14T1
NCP302LSN15T1
NCP302LSN16T1
NCP302LSN17T1
NCP302LSN18T1
NCP302LSN19T1
NCP302LSN20T1
NCP302LSN21T1
NCP302LSN22T1
NCP302LSN23T1
NCP302LSN24T1
NCP302LSN25T1
NCP302LSN26T1
NCP302LSN27T1
NCP302LSN28T1
NCP302LSN29T1
NCP302LSN30T1
NCP302LSN31T1
NCP302LSN32T1
NCP302LSN33T1
NCP302LSN34T1
NCP302LSN35T1
NCP302LSN36T1
NCP302LSN37T1
NCP302LSN38T1
NCP302LSN39T1
NCP302LSN40T1
NCP302LSN41T1
NCP302LSN42T1
NCP302LSN43T1
NCP302LSN44T1
NCP302LSN45T1
NCP302LSN46T1
NCP302LSN47T1
NCP302LSN48T1
NCP302LSN49T1
0.882
0.980
1.078
1.176
1.274
1.372
1.470
1.568
1.666
1.764
1.862
1.960
2.058
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
3.430
3.528
3.626
3.724
3.822
3.920
4.018
4.116
4.214
4.312
4.410
4.508
4.606
4.704
4.802
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
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
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
0.918 0.027 0.045 0.063
1.020 0.030 0.050 0.070
1.122 0.033 0.055 0.077
1.224 0.036 0.060 0.084
1.326 0.039 0.065 0.091
1.428 0.042 0.070 0.098
1.530 0.045 0.075 0.105
1.632 0.048 0.080 0.112
1.734 0.051 0.085 0.119
1.836 0.054 0.090 0.126
1.938 0.057 0.095 0.133
2.040 0.060 0.100 0.140
2.142 0.063 0.105 0.147
2.244 0.066 0.110 0.154
2.346 0.069 0.115 0.161
2.448 0.072 0.120 0.168
2.550 0.075 0.125 0.175
2.652 0.078 0.130 0.182
2.754 0.081 0.135 0.189
2.856 0.084 0.140 0.196
2.958 0.087 0.145 0.203
3.060 0.090 0.150 0.210
3.162 0.093 0.155 0.217
3.264 0.096 0.160 0.224
3.366 0.099 0.165 0.231
3.468 0.102 0.170 0.238
3.570 0.105 0.175 0.245
3.672 0.108 0.180 0.252
3.774 0.111 0.185 0.259
3.876 0.114 0.190 0.266
3.978 0.117 0.195 0.273
4.080 0.120 0.200 0.280
4.182 0.123 0.205 0.287
4.284 0.126 0.210 0.294
4.386 0.129 0.215 0.301
4.488 0.132 0.220 0.308
4.590 0.135 0.225 0.315
4.692 0.138 0.230 0.322
4.794 0.141 0.235 0.329
4.896 0.144 0.240 0.336
4.998 0.147 0.245 0.343
0.05
0.5
2.0
1.0
2.0
0.4
0.6
3.0
3. 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−
4. Condition 2: 0.9 — 4.9 V, V = V
+ 2.0 V
in
DET−
5. Condition 3: 0.9 — 4.9 V, V = 0.7 V, V
= 0.05 V, Active Low ‘L’ Suffix Devices
in
OUT
6. 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,
OUT
in
OUT
in
OUT
in
Condition 4: Active Low ‘L’ Suffix Devices
7. 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
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8
NCP302, NCP303
Table 2. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 − 4.9 V
Nch
Sink
Current
Supply Current
Pch Source Current
Low High
Detector Threshold
Hysteresis
V
Low
V
in
High
V
in
V
in
NCP302 Series
Detector Threshold
in
I
I
I
I
I
in
in
OUT
(3)
OUT
(4)
OUT
(5)
(1)
(2)
(mA)
(mA)
Typ
0.5
(mA)
(mA)
(mA)
V
DET−
(V)
V
HYS
(V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
0.3
Typ
Typ
Typ
NCP302HSN09T1
NCP302HSN10T1
NCP302HSN11T1
NCP302HSN12T1
NCP302HSN13T1
NCP302HSN14T1
NCP302HSN15T1
NCP302HSN16T1
NCP302HSN17T1
NCP302HSN18T1
NCP302HSN19T1
NCP302HSN20T1
NCP302HSN21T1
NCP302HSN22T1
NCP302HSN23T1
NCP302HSN24T1
NCP302HSN25T1
NCP302HSN26T1
NCP302HSN27T1
NCP302HSN28T1
NCP302HSN29T1
NCP302HSN30T1
NCP302HSN31T1
NCP302HSN32T1
NCP302HSN33T1
NCP302HSN34T1
NCP302HSN35T1
NCP302HSN36T1
NCP302HSN37T1
NCP302HSN38T1
NCP302HSN39T1
NCP302HSN40T1
NCP302HSN41T1
NCP302HSN42T1
NCP302HSN43T1
NCP302HSN44T1
NCP302HSN45T1
NCP302HSN46T1
NCP302HSN47T1
NCP302HSN48T1
NCP302HSN49T1
0.882
0.980
1.078
1.176
1.274
1.372
1.470
1.568
1.666
1.764
1.862
1.960
2.058
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
3.430
3.528
3.626
3.724
3.822
3.920
4.018
4.116
4.214
4.312
4.410
4.508
4.606
4.704
4.802
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
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
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
0.918 0.027 0.045 0.063
1.020 0.030 0.050 0.070
1.122 0.033 0.055 0.077
1.224 0.036 0.060 0.084
1.326 0.039 0.065 0.091
1.428 0.042 0.070 0.098
1.530 0.045 0.075 0.105
1.632 0.048 0.080 0.112
1.734 0.051 0.085 0.119
1.836 0.054 0.090 0.126
1.938 0.057 0.095 0.133
2.040 0.060 0.100 0.140
2.142 0.063 0.105 0.147
2.244 0.066 0.110 0.154
2.346 0.069 0.115 0.161
2.448 0.072 0.120 0.168
2.550 0.075 0.125 0.175
2.652 0.078 0.130 0.182
2.754 0.081 0.135 0.189
2.856 0.084 0.140 0.196
2.958 0.087 0.145 0.203
3.060 0.090 0.150 0.210
3.162 0.093 0.155 0.217
3.264 0.096 0.160 0.224
3.366 0.099 0.165 0.231
3.468 0.102 0.170 0.238
3.570 0.105 0.175 0.245
3.672 0.108 0.180 0.252
3.774 0.111 0.185 0.259
3.876 0.114 0.190 0.266
3.978 0.117 0.195 0.273
4.080 0.120 0.200 0.280
4.182 0.123 0.205 0.287
4.284 0.126 0.210 0.294
4.386 0.129 0.215 0.301
4.488 0.132 0.220 0.308
4.590 0.135 0.225 0.315
4.692 0.138 0.230 0.322
4.794 0.141 0.235 0.329
4.896 0.144 0.240 0.336
4.998 0.147 0.245 0.343
2.5
0.04
0.08
0.18
0.6
11
0.4
0.6
8. 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
DET−
in
DET−
in
DET−
in
9. Condition 2: 0.9 — 4.9 V, V = V
+ 2.0 V
in
DET−
10.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
11. Condition 4: 0.9 — 4.9 V, V = 0.7 V, V
in
12.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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9
NCP302, NCP303
Table 3. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 − 4.9 V
Supply Current
Nch Sink Current
Low High
Detector Threshold
Hysteresis
V
Low
V
in
High
V
in
V
in
NCP303 Series
Detector Threshold
in
I
I
I
I
in
in
OUT
(3)
OUT
(4)
(1)
(2)
(mA)
(mA)
Typ
0.5
(mA)
(mA)
V
DET−
(V)
V
HYS
(V)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
0.3
Typ
Typ
NCP303LSN09T1
NCP303LSN10T1
NCP303LSN11T1
NCP303LSN12T1
NCP303LSN13T1
NCP303LSN14T1
NCP303LSN15T1
NCP303LSN16T1
NCP303LSN17T1
NCP303LSN18T1
NCP303LSN19T1
NCP303LSN20T1
NCP303LSN21T1
NCP303LSN22T1
NCP303LSN23T1
NCP303LSN24T1
NCP303LSN25T1
NCP303LSN26T1
NCP303LSN27T1
NCP303LSN28T1
NCP303LSN29T1
NCP303LSN30T1
NCP303LSN31T1
NCP303LSN32T1
NCP303LSN33T1
NCP303LSN34T1
NCP303LSN35T1
NCP303LSN36T1
NCP303LSN37T1
NCP303LSN38T1
NCP303LSN39T1
NCP303LSN40T1
NCP303LSN41T1
NCP303LSN42T1
NCP303LSN43T1
NCP303LSN44T1
NCP303LSN45T1
NCP303LSN46T1
NCP303LSN47T1
NCP303LSN48T1
NCP303LSN49T1
0.882
0.980
1.078
1.176
1.274
1.372
1.470
1.568
1.666
1.764
1.862
1.960
2.058
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
3.430
3.528
3.626
3.724
3.822
3.920
4.018
4.116
4.214
4.312
4.410
4.508
4.606
4.704
4.802
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
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
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
0.918
1.020
1.122
1.224
1.326
1.428
1.530
1.632
1.734
1.836
1.938
2.040
2.142
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
3.570
3.672
3.774
3.876
3.978
4.080
4.182
4.284
4.386
4.488
4.590
4.692
4.794
4.896
4.998
0.027
0.030
0.033
0.036
0.039
0.042
0.045
0.048
0.051
0.054
0.057
0.060
0.063
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
0.105
0.108
0.111
0.114
0.117
0.120
0.123
0.126
0.129
0.132
0.135
0.138
0.141
0.144
0.147
0.045
0.050
0.055
0.060
0.065
0.070
0.075
0.080
0.085
0.090
0.095
0.100
0.105
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
0.175
0.180
0.185
0.190
0.195
0.200
0.205
0.210
0.215
0.220
0.225
0.230
0.235
0.240
0.245
0.063
0.070
0.077
0.084
0.091
0.098
0.105
0.112
0.119
0.126
0.133
0.140
0.147
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
0.245
0.252
0.259
0.266
0.273
0.280
0.287
0.294
0.301
0.308
0.315
0.322
0.329
0.336
0.343
0.05
0.5
1.0
2.0
0.4
0.6
13.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
DET−
in
DET−
in
DET−
in
14.Condition 2: 0.9 — 4.9 V, V = V
+ 2.0 V
in
DET−
15.Condition 3: 0.9 — 4.9 V, V = 0.7 V, V
= 0.05 V, Active Low ‘L’ Suffix Devices
in
OUT
16.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,
OUT
in
OUT
in
OUT
in
Condition 4: Active Low ‘L’ Suffix Devices
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10
NCP302, NCP303
3.00
2.95
2.90
2.85
2.80
2.75
2.70
2.65
2.60
0.98
0.96
0.94
0.92
0.90
V
V
DET+
V
V
DET+
DET−
DET−
0.88
0.86
−50
0
75
−50
0
75
−25
25
50
100
−25
25
50
100
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 3. NCP302/3 Series 0.9 V
Figure 4. NCP302/3 Series 2.7 V
Detector Threshold Voltage vs. Temperature
Detector Threshold Voltage vs. Temperature
4.9
4.8
4.7
4.6
4.5
0.9
V
in
= 0.99 V
0.8
0.7
0.6
0.5
V
V
DET+
DET−
4.4
4.3
0.4
0.3
−50
0
75
−25
25
50
100
−50
0
75
−25
25
50
100
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 5. NCP302/3 Series 4.5 V
Detector Threshold Voltage vs. Temperature
Figure 6. NCP302/3 Series 0.9 V
CD Delay Pin Threshold Voltage vs. Temperature
2.3
2.2
2.1
2.0
3.3
3.2
3.1
3.0
2.9
V
in
= 4.95 V
V
in
= 2.97 V
1.9
1.8
2.8
2.7
−50
0
75
−25
25
50
100
−50
0
75
−25
25
50
100
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 7. NCP302/3 Series 2.7 V
CD Delay Pin Threshold Voltage vs. Temperature
Figure 8. NCP302/3 Series 4.5 V
CD Delay Pin Threshold Voltage vs. Temperature
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11
NCP302, NCP303
0.6
0.5
0.4
0.3
0.2
0.1
0
8.0
7.0
T = 25°C
A
T = 25°C
A
V
= 2.5 V
in
V
in
= 0.85 V
6.0
5.0
4.0
3.0
2.0
1.0
0
V
= 2.0 V
in
V
in
= 0.7 V
V
in
= 1.5 V
0
0.4
, DELAY PIN VOLTAGE (V)
1.0
0
1.0
, DELAY PIN VOLTAGE (V)
2.5
0.2
0.6
0.8
0.5
1.5
2.0
V
V
CD
CD
Figure 9. NCP302/3 Series 0.9 V
Figure 10. NCP302/3 Series 2.7 V
CD Delay Pin Sink Current vs. Voltage
CD Delay Pin Sink Current vs. Voltage
10000
18
16
T = 25°C
A
T = 25°C
A
V
in
= 4.0 V
1000
100
10
14
t
(ms)
D1
V
= 3.5 V
in
12
10
V
= 3.0 V
in
8.0
6.0
t
(ms)
D2
V
in
= 2.5 V
4.0
2.0
0
1.0
0.1
0.0001
0.01
1.0
0.001
0.1
0
1.0
2.5
, DELAY PIN VOLTAGE (V)
0.5
1.5
2.0
3.0
3.5
4.0
C , DELAY PIN CAPACITANCE ( mF)
D
V
CD
Figure 11. NCP302/3 Series 4.5 V
CD Delay Pin Sink Current vs. Voltage
Figure 12. 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
(ms)
D2
t
D2
(ms)
1.0
0.1
1.0
0.1
0.0001
0.01
1.0
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 13. NCP302/3 Series 2.7 V
Output Time Delay vs. Capacitance
Figure 14. NCP302/3 Series 4.5 V
Output Time Delay vs. Capacitance
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NCP302, NCP303
1.0
0.8
0.6
0.4
3.0
2.5
2.0
1.5
1.0
0.5
0
T = −30°C (303L only)
A
T = 25°C (303L only)
A
T = −30°C (303L only)
A
0.2
0
T = 85°C (303L only)
A
T = 25°C (303L only)
A
T = 85°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
1.0
2.0
V , INPUT VOLTAGE (V)
in
in
Figure 15. NCP302L/3L Series 0.9 V
Reset Output Voltage vs. Input Voltage
Figure 16. NCP302L/3L Series 2.7 V
Reset Output Voltage vs. Input Voltage
7.0
6.0
5.0
4.0
3.0
2.0
1.2
1.0
0.8
0.6
0.4
T = 25°C
A
V
in
= 0.85 V
T = −30°C (303L only)
T = 25°C (303L only)
A
A
V
in
= 0.7 V
T = 85°C (303L only)
A
0.2
0
1.0
0
0
2.0
4.0
5.0
6.0
1.0
3.0
0
0.4
, OUTPUT VOLTAGE (V)
1.0
0.2
0.6
0.8
V , INPUT VOLTAGE (V)
in
V
OUT
Figure 17. NCP302L/3L Series 4.5 V
Reset Output Voltage vs. Input Voltage
Figure 18. NCP302H/3L Series 0.9 V
Reset Output Sink Current vs. Output Voltage
16
14
35
30
25
20
15
10
5.0
0
T = 25°C
A
T = 25°C
A
V
= 4.0 V
in
V
= 2.5 V
in
12
V
= 3.5 V
in
10
V
= 3.0 V
8.0
6.0
4.0
in
V
= 2.0 V
in
V
= 2.5 V
in
V
in
= 1.5 V
V
= 2.0 V
2.5
in
2.0
0
V
= 1.5 V
2.0
in
0
1.0
, OUTPUT VOLTAGE (V)
2.5
0
0.5
1.0
V
1.5
3.0
3.5
4.0
0.5
V
1.5
2.0
, OUTPUT VOLTAGE (V)
OUT
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
1.2
1.0
0.8
0.6
0.4
0.2
0
5.5
T = 25°C
A
T = 25°C
A
2.5
2.0
1.5
1.0
0.5
0
0
2.0
4.0
6.0
8.0
10
0
4.0
6.0
10
2.0
8.0
V , INPUT VOLTAGE (V)
in
V , INPUT VOLTAGE (V)
in
Figure 21. NCP302/3 Series 0.9 V
Input Current vs. Input Voltage
Figure 22. NCP302/3 Series 2.7 V
Input Current vs. Input Voltage
11.8
250
200
150
100
T = 25°C
A
2.5
2.0
1.5
C
= 0.1 mF
D
1.0
0.5
0
50
0
−50
0
75
−25
25
50
100
0
4.0
6.0
2.0
8.0
10
V , INPUT VOLTAGE (V)
in
T , AMBIENT TEMPERATURE (°C)
A
Figure 23. NCP302/3 Series 4.5 V
Input Current vs. Input Voltage
Figure 24. NCP302/3 Series 0.9 V
Reset Output Time Delay vs. Temperature
350
300
250
200
150
100
250
C
= 0.1 mF
D
C
= 0.1 mF
200
150
100
D
50
0
50
0
−50
0
75
−25
25
50
100
−50
0
75
−25
25
50
100
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 25. NCP302/3 Series 2.7 V
Reset Output Time Delay vs. Temperature
Figure 26. NCP302/3 Series 4.5 V
Reset Output Time Delay vs. Temperature
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14
NCP302, NCP303
9.0
V
1.6
1.4
V
OUT
= 0.5 V
= 0.5 V
OUT
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
T = −30°C
A
T = −30°C
A
1.2
1.0
0.8
0.6
0.4
0.2
0
T = 25°C
A
T = 25°C
A
T = 85°C
A
T = 85°C
A
0
1.0
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
V , INPUT VOLTAGE (V)
in
in
Figure 27. NCP302H/3L Series 0.9 V
Reset Output Sink Current vs. Input Voltage
Figure 28. NCP302H/3L Series 2.7 V
Reset Output Sink Current vs. Input Voltage
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
14
12
V
OUT
= 0.5 V
V
CD
= 0.5 V
T = −30°C
A
T = 25°C
A
10
8.0
6.0
4.0
2.0
0
T = −30°C
A
T = 25°C
A
T = 85°C
A
T = 85°C
A
0
2.0
5.0
1.0
3.0
4.0
0
0.4
V , INPUT VOLTAGE (V)
1.0
0.2
0.6
0.8
V , INPUT VOLTAGE (V)
in
in
Figure 29. NCP302H/3L Series 4.5 V
Reset Output Sink Current vs. Input Voltage
Figure 30. NCP302/3 Series 0.9 V
CD Delay Pin Sink Current vs. Input Voltage
5.0
6.0
5.0
4.0
3.0
2.0
1.0
0
V
CD
= 0.5 V
V
CD
= 0.5 V
T = −30°C
A
4.0
3.0
2.0
1.0
0
T = 25°C
A
T = −30°C
A
T = 25°C
A
T = 85°C
A
T = 85°C
A
0
1.0
V , INPUT VOLTAGE (V)
2.5
0.5
1.5
2.0
3.0
0
2.0
5.0
1.0
3.0
4.0
V , INPUT VOLTAGE (V)
in
in
Figure 31. NCP302/3 Series 2.7 V
CD Delay Pin Sink Current vs. Input Voltage
Figure 32. NCP302/3 Series 4.5 V
CD Delay Pin Sink Current vs. Input Voltage
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15
NCP302, NCP303
12
10
12
10
V
OUT
= V −2.1 V
in
V
OUT
= V −2.1 V
in
T = 25°C
A
T = 25°C
A
V
−1.5 V
8.0
V
−1.5 V
in
in
in
8.0
6.0
4.0
V
in
−1.0 V
6.0
V
−1.0 V
−0.5 V
4.0
V
in
−0.5 V
V
in
2.0
0
2.0
0
0
8.0
0
4.0
8.0
2.0
4.0
6.0
10
2.0
6.0
10
V , INPUT VOLTAGE (V)
in
V , INPUT VOLTAGE (V)
in
Figure 33. NCP302L Series 0.9 V
Reset Output Source Current vs. Input Voltage
Figure 34. NCP302L Series 2.7 V
Reset Output Source Current vs. Input Voltage
2.0
1.6
1.2
0.8
0.4
0
12
10
V
= V −2.1 V
in
OUT
T = 25°C
A
V
−1.5 V
−1.0 V
in
in
8.0
6.0
V
4.0
V
in
−0.5 V
2.0
0
0
4.0
8.0
2.0
6.0
10
−50
0
75
−25
25
50
100
V , INPUT VOLTAGE (V)
in
T , AMBIENT TEMPERATURE (°C)
A
Figure 35. NCP302L Series 4.5 V
Reset Output Source Current vs. Input Voltage
Figure 36. NCP302/3 Series
Delay Resistance vs. Temperature
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16
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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17
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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18
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
ǒ
Ǔ
6.8
4.3
+ 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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19
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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20
NCP302, NCP303
Power Supply 1
2
Input
Reset Output
To MCU or Logic
Circuitry
5
1
NCP303
LSN18T1
C
Reset Output
D
3
GN
D
Power Supply 2
2
Input
1
NCP300
LSN33T1
Reset Output
3
2
GN
D
Power Supply 3
Input
1
NCP300
LSN45T1
Reset Output
3
GN
D
For monitoring power supplies with a time delay reset, only a single NCP303 with delay capacitor is required.
Figure 45. Multiple Power Supply Undervoltage
Supervision with Time Delay Reset
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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
NCP302LSN18T1
NCP302LSN20T1
NCP302LSN27T1
NCP302LSN27T1G
1.5
1.8
2.0
2.7
2.7
SBI
SBF
SBD
SAW
SAW
TSOP−5
TSOP−5
TSOP−5
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN30T1
NCP302LSN30T1G
3.0
3.0
SAT
SAT
TSOP−5
TSOP−5
(Pb−Free)
Active
Low
CMOS
NCP302LSN33T1
NCP302LSN33T1G
3.3
3.3
SAQ
SAQ
TSOP−5
TSOP−5
(Pb−Free)
NCP302LSN38T1
3.8
SAK
TSOP−5
(Pb−Free)
NCP302LSN38T1G
NCP302LSN40T1
NCP302LSN43T1
NCP302LSN45T1
NCP302LSN45T1G
3.8
4.0
4.3
4.5
4.5
SAK
SAI
TSOP−5
TSOP−5
TSOP−5
TSOP−5
3000 / Tape & Reel
(7 inch Reel)
SAF
SAL
SAL
TSOP−5
(Pb−Free)
NCP302LSN47T1
4.7
SAC
TSOP−5
NCP302HSN09T1
NCP302HSN18T1
0.9
1.8
SDO
SFH
TSOP−5
TSOP−5
NCP302HSN27T1
NCP302HSN30T1
NCP302HSN40T1
NCP302HSN45T1
NCP302HSN45T1G
2.7
3.0
4.0
4.5
4.5
SDK
SDI
TSOP−5
TSOP−5
TSOP−5
TSOP−5
Active
High
CMOS
SJH
SDG
SDG
TSOP−5
(Pb−Free)
NCP303LSN09T1
NCP303LSN09T1G
0.9
0.9
SDE
SDE
TSOP−5
TSOP−5
(Pb−Free)
Open
Drain
Active
Low
NCP303LSN10T1
NCP303LSN10T1G
1.0
1.0
SDD
SDD
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN11T1
1.1
SDC
TSOP−5
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.
http://onsemi.com
22
NCP302, NCP303
ORDERING INFORMATION
Threshold
Voltage
Output
Type
†
Device
Reset
Marking
SDA
Package
TSOP−5
TSOP−5
TSOP−5
Shipping
NCP303LSN13T1
NCP303LSN14T1
NCP303LSN15T1
NCP303LSN15T1G
1.3
1.4
SCZ
1.5
SCY
1.5
SCY
TSOP−5
(Pb−Free)
NCP303LSN16T1
NCP303LSN18T1
NCP303LSN20T1
NCP303LSN20T1G
1.6
1.8
2.0
2.0
SCX
SCV
SCT
SCT
TSOP−5
TSOP−5
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN22T1
NCP303LSN23T1
NCP303LSN24T1
NCP303LSN25T1
NCP303LSN25T1G
2.2
2.3
2.4
2.5
2.5
SCR
SCQ
SCP
SCO
TSOP−5
TSOP−5
TSOP−5
TSOP−5
TSOP−5
(Pb−Free)
SCO
SCN
SCN
SCM
SCM
SCL
SCL
SCK
SCK
SCJ
SCJ
NCP303LSN26T1
NCP303LSN26T1G
2.6
2.6
TSOP−5
TSOP−5
(Pb−Free)
Open
Drain
Active
Low
3000 / Tape & Reel
(7 inch Reel)
NCP303LSN27T1
NCP303LSN27T1G
2.7
2.7
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN28T1
NCP303LSN28T1G
2.8
2.8
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN29T1
NCP303LSN29T1G
2.9
2.9
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN30T1
NCP303LSN30T1G
3.0
3.0
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN31T1
NCP303LSN32T1
NCP303LSN33T1
NCP303LSN34T1
NCP303LSN36T1
NCP303LSN38T1
3.1
3.2
3.3
3.4
3.6
3.8
SCI
SCH
SCG
SCF
SCD
SCA
TSOP−5
TSOP−5
TSOP−5
TSOP−5
TSOP−5
TSOP−5
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.
http://onsemi.com
23
NCP302, NCP303
ORDERING INFORMATION
Threshold
Voltage
Output
Type
†
Device
Reset
Marking
SBY
Package
TSOP−5
TSOP−5
Shipping
NCP303LSN40T1
NCP303LSN42T1
NCP303LSN42T1G
4.0
4.2
SBW
4.2
TSOP−5
(Pb−Free)
SBW
SBU
SBU
SBT
SBT
SBS
SBS
SBR
NCP303LSN44T1
NCP303LSN44T1G
4.4
4.4
TSOP−5
TSOP−5
(Pb−Free)
Open
Drain
Active
Low
3000 / Tape & Reel
(7 inch Reel)
NCP303LSN45T1
NCP303LSN45T1G
4.5
4.5
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN46T1
NCP303LSN46T1G
4.6
4.6
TSOP−5
TSOP−5
(Pb−Free)
NCP303LSN47T1
4.7
TSOP−5
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.
http://onsemi.com
24
NCP302, NCP303
PACKAGE DIMENSIONS
THIN SOT−23−5/TSOP−5/SC59−5
CASE 483−02
ISSUE C
NOTES:
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.
D
5
4
3
B
C
S
1
2
L
MILLIMETERS
DIM MIN MAX
INCHES
MIN MAX
G
A
B
C
D
G
H
J
K
L
M
S
2.90
1.30
0.90
0.25
0.85
3.10 0.1142 0.1220
1.70 0.0512 0.0669
1.10 0.0354 0.0433
0.50 0.0098 0.0197
1.05 0.0335 0.0413
A
J
0.013 0.100 0.0005 0.0040
0.05 (0.002)
0.10
0.20
1.25
0
0.26 0.0040 0.0102
0.60 0.0079 0.0236
1.55 0.0493 0.0610
H
M
K
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.
http://onsemi.com
25
NCP302, NCP303
ON Semiconductor and
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
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
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