NCP3337MN250R2G [ONSEMI]
Ultra High Accuracy, Low Iq, 500 mA with Power Good Low Dropout Regulator; 超高精度，低IQ 500 mA的电源良好低压差稳压器
| 型号： | NCP3337MN250R2G |
| 厂家： | 
ONSEMI |
| 描述： | Ultra High Accuracy, Low Iq, 500 mA with Power Good Low Dropout Regulator |
| 文件： | 总16页 (文件大小：1314K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCP3337
Ultra High Accuracy, Low
Iq, 500 mA with Power
Good Low Dropout
Regulator
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The NCP3337 is a high performance, low dropout regulator. With
accuracy of 0.9% over line and load and ultra−low quiescent current
and noise it encompasses all of the necessary features required by
today’s consumer electronics. This unique device is guaranteed to be
stable without a minimum load current requirement and stable with
any type of capacitor as small as 1.0 mF. The NCP3337 also comes
equipped with sense and noise reduction pins to increase the overall
utility of the device. The NCP3337 offers reverse bias protection.
DFN10
MN SUFFIX
CASE 485C
MARKING DIAGRAM
Features
Pin 1, 2. V
out
• High Accuracy Over Line and Load ( 0.9% at 25°C)
• Ultra−Low Dropout Voltage at Full Load (260 mV typ)
• No Minimum Output Current Required for Stability
• Low Noise (33 mVrms w/10 nF C and 52 mVrms w/out C )
3. Sense / ADJ
4. GND
5. PWRG
6. NC
7. NR
8. SD
1
P3337
xxx
ALYWG
G
nr
nr
• Low Shutdown Current (< 1 mA)
• Reverse Bias Protected
9, 10. V
in
EP, GND
• 2.9 V to 12 V Supply Range
• Thermal Shutdown Protection
• Current Limitation
xxx = Specific Device Marking
A
L
= Assembly Location
= Wafer Lot
Y
W
G
= Year
= Work Week
= Pb−Free Package
• Requires Only 1.0 mF Output Capacitance for Stability
• Stable with Any Type of Capacitor (including MLCC)
(Note: Microdot may be in either location)
• Available in 1.8 V, 2.5 V, 3.3 V, 5.0 V and Adjustable Output
Voltages
• Power Good Output
• These are Pb−Free Devices
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 15 of this data sheet.
Applications
• PCMCIA Card
• Cellular Phones
• Camcorders and Cameras
• Networking Systems, DSL/Cable Modems
• Cable Set−Top Box
• MP3/CD Players
• DSP Supply
• Displays and Monitors
© Semiconductor Components Industries, LLC, 2010
1
Publication Order Number:
August, 2010 − Rev. 0
NCP3337/D
NCP3337
C
nr
ON
(Optional)
6
7
OFF
NC
NR
8
SD
IN
SENSE
3
2
1
9
OUT
10
V
in
V
out
OUT
IN
+
+
C
1.0 mF
out
C
1.0 mF
in
EP GND
PWRG
5
R1
100k
4
EP
PWRG
Figure 1. Typical Fixed Version Application Schematic
C
nr
R2
R3
(Optional)
ON
6
7
OFF
NC
NR
8
3
SD
IN
ADJ
OUT
OUT
EP GND
9
2
1
10
V
in
V
out
IN
+
+
C
1.0 mF
out
R1
100k
PWRG
5
C
1.0 mF
in
4
EP
PWRG
Figure 2. Typical Adjustable Version Application Schematic
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2
NCP3337
Comp.
PWRG
Vin
SD
Voltage
Reference
Enable
Block
Current and
Thermal
Protection
Circuit
Series Pass
Element with
Reverse Bias
Protection
Error
Amplifier
Vout
ADJ
NR
NCP3337 Adjustable
GND
Figure 3. Block Diagram, Adjustable Output Version
Comp.
PWRG
Vin
SD
Voltage
Reference
Enable
Block
Current and
Series Pass
Error
Amplifier
Thermal
Protection
Circuit
Element with
Reverse Bias
Protection
Vout
NR
SENSE
NCP3337 Fix
GND
Figure 4. Block Diagram, Fixed Output Version
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3
NCP3337
PIN FUNCTION DESCRIPTION
Pin No.
1, 2
Pin Name
Description
V
out
Regulated output voltage. Bypass to ground with C w 1.0 mF
out
3
SENSE/ADJ
For output voltage sensing, connect to Pins 1 and 2.at Fixed output Voltage version
Adjustable pin at Adjustable output version
4
GND
PWRG
NC
Power Supply Ground
5
6
Power Good
Not Connected
7
NR
Noise Reduction Pin. This is an optional pin used to further reduce noise.
Shutdown pin. When not in use, this pin should be connected to the input pin.
Power Supply Input Voltage
8
SD
9, 10
EPAD
V
in
EPAD
Exposed thermal pad should be connected to ground.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
V
Input Voltage
V
in
−0.3 to +16
Output Voltage
V
out
−0.3 to V +0.3 or 10 V*
V
in
PWRG Pin Voltage
V
−0.3 to +16
−0.3 to +16
−40 to +150
−50 to +150
V
PWRG
Shutdown Pin Voltage
Junction Temperature Range
Storage Temperature Range
V
sh
V
T
J
°C
°C
T
stg
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.
NOTE: This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) JESD 22−A114−B
Machine Model (MM) JESD 22−A115−A
*Which ever is less. Reverse bias protection feature valid only if (V − V ) ≤ 7 V.
out
in
THERMAL CHARACTERISTICS
Test Conditions (Typical Value)
Min Pad Board (Note 1)
1, Pad Board (Note 1)
Characteristic
Junction−to−Air, qJA
Unit
°C/W
°C/W
215
58
66
Junction−to−Pin, J−L4
18
1. As mounted on a 35 x 35 x 1.5 mm FR4 Substrate, with a single layer of a specified copper area of 2 oz (0.07 mm thick) copper traces and
heat spreading area. JEDEC 51 specifications for a low and high conductivity test board recommend a 2 oz copper thickness. Test conditions
are under natural convection or zero air flow.
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4
NCP3337
ELECTRICAL CHARACTERISTICS − 1.8 V (V = 1.8 V typical, V = 2.9 V, T = −40°C to +85°C, unless otherwise noted, Note 2)
out
in
A
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (Accuracy)
= 2.9 V to 5.8 V, I
V
out
−0.9%
1.783
1.8
+0.9%
1.817
V
V
= 0.1 mA to 500 mA, T = 25°C
in
load
A
Output Voltage (Accuracy)
= 2.9 V to 5.8 V, I
V
−1.4%
1.8
1.8
+1.4%
1.826
V
V
out
V
in
= 0.1 mA to 500 mA, T = 0°C to +85°C
1.774
load
A
Output Voltage (Accuracy)
V
out
−1.5%
1.773
+1.5%
1.827
V
in
= 2.9 V to 5.8 V, I
= 0.1 mA to 500 mA, T = −40°C to +125°C
load
A
Minimum Input Voltage
Line Regulation
V
2.9
V
inmin
Line
0.04
mV/V
Reg
V
= 2.9 V to 12 V, I
= 0.1 mA
in
load
Load Regulation
= 2.9 V, I
Load
0.04
mV/mA
mV
Reg
V
in
= 0.1 mA to 500 mA
load
Dropout Voltage (See Figure 9)
V
DO
I
I
I
= 500 mA (Notes 3, 4)
= 300 mA (Notes 3, 4)
= 50 mA (Notes 3, 4)
620
230
95
load
load
load
Peak Output Current (See Figures 14 and 17)
Short Output Current (See Figure 14) V < 7 V, T = 25°C
I
I
500
700
830
900
mA
mA
°C
pk
in
A
sc
Thermal Shutdown / Hysteresis
T
160/10
J
Ground Current
In Regulation
I
GND
I
I
I
I
= 500 mA (Note 3)
= 300 mA (Note 3)
= 50 mA
9.0
4.6
0.8
−
14
7.5
2.5
220
mA
mA
mA
mA
load
load
load
load
= 0.1 mA
In Dropout
= 2.2 V, I
V
in
= 0.1 mA
load
500
1.0
In Shutdown
= 0 V
V
SD
I
GNDsh
Output Noise
V
noise
C
C
= 0 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
52
33
mVrms
mVrms
nr
nr
load
out
= 10 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
load
out
Power Good Voltage
Low Threshold
Hysteresis
V
elft
% of
out
93
95
2
97
V
High Threshold
99
Power Good Pin Voltage Saturation (I − 1.0 mA)
V
200
1.0
50
mV
mA
ms
ef
efdo
Power Good Pin Leakage
I
efleak
Power Good Blanking Time (Note 7)
t
ef
Shutdown
V
SD
Threshold Voltage ON
Threshold Voltage OFF
2.0
V
V
0.4
1.0
1.0
SD Input Current, V = 0 V to 0.4 V or V = 2.0 V to V
I
0.07
0.07
10
mA
mA
mA
SD
SD
in
SD
Output Current In Shutdown Mode, V = 0 V
I
OSD
out
Reverse Bias Protection, Current Flowing from the Output Pin to GND
(V = 0 V, V = 1.8 V)
I
OUTR
in
out_forced
2. Performance guaranteed over the operating temperature range by design and/or characterization, production tested at T = T = 25°C. Low
J
A
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
3. T must be greater than 0°C.
A
4. Maximum dropout voltage is limited by minimum input voltage V = 2.9 V recommended for guaranteed operation.
in
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5
NCP3337
ELECTRICAL CHARACTERISTICS − 2.5 V (V = 2.5 V typical, V = 2.9 V, T = −40°C to +85°C, unless otherwise noted, Note 5)
out
in
A
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (Accuracy)
= 2.9 V to 6.5 V, I
V
out
−0.9%
2.477
2.5
+0.9%
2.523
V
V
= 0.1 mA to 500 mA, T = 25°C
in
load
A
Output Voltage (Accuracy)
= 2.9 V to 6.5 V, I
V
−1.4%
2.5
2.5
+1.4%
2.535
V
V
out
V
in
= 0.1 mA to 500 mA, T = 0°C to +85°C
2.465
load
A
Output Voltage (Accuracy)
V
out
−1.5%
2.462
+1.5%
2.538
V
in
= 2.9 V to 6.5 V, I
= 0.1 mA to 500 mA, T = −40°C to +125°C
load
A
Minimum Input Voltage
Line Regulation
V
2.9
V
inmin
Line
0.04
mV/V
Reg
V
= 2.9 V to 12 V, I
= 0.1 mA
in
load
Load Regulation
= 2.9 V, I
Load
0.04
mV/mA
mV
Reg
V
in
= 0.1 mA to 500 mA
load
Dropout Voltage (See Figure 10)
V
DO
I
I
I
I
= 500 mA (Note 6)
= 300 mA (Note 6)
= 50 mA
340
230
110
10
load
load
load
load
= 0.1mA
Peak Output Current (See Figures 14 and 18)
Short Output Current (See Figure 14) V < 7 V, T = 25°C
I
I
500
700
800
900
mA
mA
°C
pk
in
A
sc
Thermal Shutdown / Hysteresis
T
160/10
J
Ground Current
In Regulation
I
GND
I
I
I
I
= 500 mA (Note 6)
= 300 mA (Note 6)
= 50 mA
9.0
4.6
0.8
−
14
7.5
2.5
220
mA
mA
mA
mA
load
load
load
load
= 0.1 mA
In Dropout
= 2.4 V, I
V
in
= 0.1 mA
load
500
1.0
In Shutdown
= 0 V
V
SD
I
GNDsh
Output Noise
V
noise
C
C
= 0 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
56
35
mVrms
mVrms
nr
nr
load
out
= 10 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
load
out
Power Good Voltage
Low Threshold
Hysteresis
V
elft
% of
out
93
95
2
97
V
High Threshold
99
Power Good Pin Voltage Saturation (I − 1.0 mA)
V
200
1.0
50
mV
mA
ms
ef
efdo
Power Good Pin Leakage
I
efleak
Power Good Blanking Time (Note 7)
t
ef
Shutdown
V
SD
Threshold Voltage ON
Threshold Voltage OFF
2.0
V
V
0.4
1.0
1.0
S
D
Input Current, V = 0 V to 0.4 V or V = 2.0 V to V
I
0.07
0.07
10
mA
mA
mA
SD
SD
in
SD
Output Current In Shutdown Mode, V = 0 V
I
OSD
out
Reverse Bias Protection, Current Flowing from the Output Pin to GND
(V = 0 V, V = 2.5 V)
I
OUTR
in
out_forced
5. Performance guaranteed over the operating temperature range by design and/or characterization, production tested at T = T = 25°C. Low
J
A
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
6. T must be greater than 0°C.
A
7. Can be disabled per customer request.
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6
NCP3337
ELECTRICAL CHARACTERISTICS − 3.3 V (V = 3.3 V typical, V = 3.7 V, T = −40°C to +85°C, unless otherwise noted,
out
in
A
Note 8)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (Accuracy) V
V
out
−0.90%
3.27
3.3
0.90%
3.33
V
in
V
= 3.7 V to 7.3 V, I
= 0.1 mA to 500 mA, T = 25°C
in
load
A
Output Voltage (Accuracy)
= 3.7 V to 7.3 V, I
V
−1.40%
3.254
3.3
3.3
1.40%
3.346
V
V
out
V
in
= 0.1 mA to 500 mA, T = 0°C to +85°C
load
A
Output Voltage (Accuracy)
V
out
−1.50%
3.325
1.50%
3.35
V
in
= 3.7 V to 7.3 V, I
= 0.1 mA to 500 mA, T = −40°C to +125°C
load
A
Line Regulation
= 3.7 V to 12 V, I
Line
0.04
0.04
mV/V
mV/mA
mV
Reg
V
in
= 0.1 mA
load
Load Regulation
= 3.7 V, I
Load
Reg
V
= 0.1 mA to 500 mA
load
in
Dropout Voltage
V
DO
I
I
I
I
= 500 mA
= 300 mA
= 50 mA
= 0.1 mA
340
230
110
10
load
load
load
load
Peak Output Current (See Figure 14)
Short Output Current (See Figure 14) V < 7 V, T = 25°C
I
I
500
700
800
900
mA
mA
°C
pk
in
A
sc
Thermal Shutdown / Hysteresis
T
160/10
J
Ground Current
In Regulation
I
GND
I
I
I
I
= 500 mA (Note 8)
= 300 mA
9
14
7.5
2.5
220
mA
load
load
load
load
4.6
0.8
−
= 50 mA
= 0.1 mA
mA
mA
In Dropout
V
= 3.7 V, I
= 0.1 mA
500
1
in
load
In Shutdown
V
SD
= 0 V
I
GNDsh
mA
Output Noise
V
noise
mVrms
C
C
= 0 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
69
46
nr
nr
load
out
= 10 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
load
out
Power Good Voltage
Low Threshold
Hysteresis
V
elft
% of
out
93
95
2
97
V
High Threshold
99
Power Good Pin Voltage Saturation (I = 1.0 mA)
V
200
1
mV
mA
ms
V
ef
efdo
Power Good Pin Leakage
I
efleak
Power Good Blanking Time (Note 9)
t
50
ef
Shutdown
V
SD
Threshold Voltage ON
Threshold Voltage OFF
2
0.4
1
SD Input Current, V = 0 V to 0.4 V or V = 2.0 V to V
I
0.07
0.07
10
mA
mA
mA
SD
SD
in
SD
Output Current In Shutdown Mode, V = 0 V
I
1
out
OSD
Reverse Bias Protection, Current Flowing from the Output Pin to GND
(V = 0 V, V = 3.3 V)
I
OUTR
in
out_forced
8. Performance guaranteed over the operating temperature range by design and/or characterization, production tested at T = T = 25°C. Low
J
A
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
9. Can be disabled per customer request.
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7
NCP3337
ELECTRICAL CHARACTERISTICS − 5 V (V = 5.0 V typical, V = 5.4 V, T = −40°C to +85°C, unless otherwise noted,
out
in
A
Note 10)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (Accuracy) V
V
out
−0.90%
4.955
5
0.90%
5.045
V
in
V
= 5.4 V to 7.3 V, I
= 0.1 mA to 500 mA, T = 25°C
in
load
A
Output Voltage (Accuracy)
= 5.4 V to 7.3 V, I
V
−1.40%
5
5
1.40%
5.07
V
V
out
V
in
= 0.1 mA to 500 mA, T = 0°C to +85°C
4.93
load
A
Output Voltage (Accuracy)
V
out
−1.50%
4.925
1.50%
5.075
V
in
= 5.4 V to 7.3 V, I
= 0.1 mA to 500 mA, T = −40°C to +125°C
load
A
Line Regulation
= 5.4 V to 12 V, I
Line
0.04
0.04
mV/V
mV/mA
mV
Reg
V
in
= 0.1 mA
load
Load Regulation
= 5.4 V, I
Load
Reg
V
= 0.1 mA to 500 mA
load
in
Dropout Voltage
V
DO
I
I
I
I
= 500 mA
= 300 mA
= 50 mA
= 0.1 mA
340
230
110
10
load
load
load
load
Peak Output Current (See Figure 14)
Short Output Current (See Figure 14) V < 7 V, T = 25°C
I
I
500
700
830
930
mA
mA
°C
pk
in
A
sc
Thermal Shutdown / Hysteresis
T
160/10
J
Ground Current
In Regulation
I
GND
I
I
I
I
= 500 mA (Note 10)
= 300 mA
9
14
7.5
2.5
220
mA
load
load
load
load
4.6
0.8
−
= 50 mA
= 0.1 mA
mA
mA
In Dropout
V
= 3.2 V, I
= 0.1 mA
500
1
in
load
In Shutdown
= 0 V
V
SD
I
GNDsh
mA
Output Noise
V
noise
mVrms
C
C
= 0 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
93
58
nr
nr
load
out
= 10 nF, I
= 500 mA, f = 10 Hz to 100 kHz, C = 10 mF
load
out
Power Good Voltage
Low Threshold
Hysteresis
V
elft
% of
out
93
95
2
97
V
High Threshold
99
Power Good Pin Voltage Saturation (I = 1.0 mA)
V
200
1
mV
mA
ms
V
ef
efdo
Power Good Pin Leakage
I
efleak
Power Good Blanking Time (Note 11)
t
50
ef
Shutdown
V
SD
Threshold Voltage ON
Threshold Voltage OFF
2
0.4
1
SD Input Current, V = 0 V to 0.4 V or V = 2.0 V to V
I
0.07
0.07
10
mA
mA
mA
SD
SD
in
SD
Output Current In Shutdown Mode, V = 0 V
I
1
out
OSD
Reverse Bias Protection, Current Flowing from the Output Pin to GND
(V = 0 V, V = 5 V)
I
OUTR
in
out_forced
10.Performance guaranteed over the operating temperature range by design and/or characterization, production tested at T = T = 25°C. Low
J
A
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
11. Can be disabled per customer request.
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8
NCP3337
ELECTRICAL CHARACTERISTICS − ADJUSTABLE (V = 1.25 V typical, V = 2.9 V, T = −40°C to +85°C, unless otherwise
out
in
A
noted, Note 12)
Characteristic
Symbol
Min
Typ
Max
Unit
Reference Voltage (Accuracy)
V
ref
V
ref
V
ref
−0.90%
1.25
0.90%
1.261
V
V
= 2.9 V to V +4.0 V, I
= 0.1 mA to 500 mA, T = 25°C
1.239
in
out
load
A
Reference Voltage (Accuracy)
= 2.9 V to V + 4.0 V, I
−1.40%
1.233
1.25
1.25
1.40%
1.268
V
V
V
in
= 0.1 mA to 500 mA, T = 0°C to +85°C
out
load
load
A
Reference Voltage (Accuracy)
−1.50%
1.231
1.50%
1.269
V
in
= 2.9 V to V + 4.0 V, I
= 0.1 mA to 500 mA, T = −40°C to
out
A
+125°C
Line Regulation
Line
0.04
0.04
mV/V
mV/mA
mV
Reg
V
= 2.9 V to 12 V, I
= 0.1 mA
in
load
Load Regulation
= 2.9 V to 12 V, I
Load
Reg
V
in
= 0.1 mA to 500 mA
load
Dropout Voltage (V = 2.5 V − 10 V)
V
DO
out
I
I
I
I
= 500 mA
= 300 mA
= 50 mA
= 0.1 mA
340
230
110
10
load
load
load
load
Peak Output Current (See Figure 14)
I
I
500
700
830
mA
mA
pk
Short Output Current (See Figure 14) V < 7 V, T = 25°C
in
A
sc
V
out
v 3.3 V
> 3.3 V
900
930
out
V
Thermal Shutdown / Hysteresis
T
J
160/
10
°C
Ground Current
In Regulation
I
GND
I
I
I
I
= 500 mA (Note 12)
= 300 mA
9
4.6
0.8
14
7.5
2.5
220
mA
load
load
load
load
= 50 mA
= 0.1 mA
In Dropout
mA
mA
mA
Vin = V + 0.1 V or 2.9 V (whichever is higher), I
= 0.1 mA
500
1
out
load
In Shutdown
V
SD
= 0 V
I
GNDsh
Output Noise
V
noise
mV
rms
C
C
= 0 nF, I
= 500 mA, f = 10 Hz to 100 kHz, Cout = 10 mF
load
69
46
nr
nr
load
= 10 nF, I
= 500 mA, f = 10 Hz to 100 kHz, Cout = 10 mF
Power Good Voltage
Low Threshold
Hysteresis
V
elft
% of
out
93
95
2
97
V
High Threshold
99
Power Good Pin Voltage Saturation (I = 1.0 mA)
V
200
1
mV
mA
ms
V
ef
efdo
Power Good Pin Leakage
I
efleak
Power Good Pin Blanking Time (Note 13)
t
50
ef
Shutdown
V
SD
Threshold Voltage ON
Threshold Voltage OFF
2
0.4
SD Input Current, V = 0 V to 0.4 V or V = 2.0 V to V
I
mA
SD
SD
in
SD
V
in
V
in
v 5.4 V
0.07
1
5
> 5.4 V
Output Current In Shutdown Mode, V = 0 V
I
0.07
1
1
mA
mA
out
OSD
Reverse Bias Protection, Current Flowing from the Output Pin to GND
(V = 0 V, V = V v 7 V)
I
OUTR
in
out_forced
out (nom)
12.Performance guaranteed over the operating temperature range by design and/or characterization, production tested at T = T = 25°C. Low
J
A
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
13.Can be disabled per customer request.
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9
NCP3337
2.52
2.515
2.51
1.85
1.84
1.83
1.82
1.81
1.8
V
I
= 2.9 V
V
I
= 2.9 V
IN
IN
= 0
= 0
OUT
OUT
2.505
2.5
V
OUT
= 2.5 V
2.495
2.49
V
= 1.8 V
OUT
1.79
1.78
1.77
1.76
1.75
2.485
2.48
2.475
2.47
−40 −20
0
20
40
60
80 100 120 140
−40 −20
0
20
40
60
80 100 120 140
T , TEMPERATURE (°C)
A
T , TEMPERATURE (°C)
A
Figure 5. Output Voltage vs. Temperature
1.8 V Version
Figure 6. Output Voltage vs. Temperature
2.5 V Version
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
3.275
3.270
5.1
5.05
5
V
I
= 3.7 V
V
I
= 5.4 V
IN
IN
= 0
= 0
OUT
OUT
V
= 3.3 V
V
OUT
= 5.0 V
OUT
4.95
4.9
4.85
−40 −20
0
20
40
60
80 100 120 140
−40 −20
0
20
40
60
80 100 120 140
T , TEMPERATURE (°C)
A
T , TEMPERATURE (°C)
A
Figure 7. Output Voltage vs. Temperature 3.3 V
Version
Figure 8. Output Voltage vs. Temperature 5.0 V
Version
900
800
700
600
500
400
300
200
100
0
400
350
300
250
200
150
100
50
500 mA
300 mA
500 mA
300 mA
50 mA
50 mA
0
0
20
40
60
80
100
120
140
0
20
40
60
80
100
120
140
T , TEMPERATURE (°C)
A
T , TEMPERATURE (°C)
A
Figure 9. Dropout Voltage vs. Temperature
1.8 V Version
Figure 10. Dropout Voltage vs. Temperature
2.5 V Version
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10
NCP3337
400
350
300
250
200
150
100
50
350
300
250
200
150
100
50
500 mA
500 mA
300 mA
300 mA
50 mA
50 mA
0
0
0
20
40
60
80
100
120
140
0
20
40
60
80
100
120
140
T , TEMPERATURE (°C)
A
T , TEMPERATURE (°C)
A
Figure 11. Dropout Voltage vs. Temperature
3.3 V Version
Figure 12. Dropout Voltage vs. Temperature
5.0 V Version
1000
900
800
700
600
500
400
300
200
100
0
0.97 V
out
I
sc
I
pk
V
= 2.9 V
IN
V
OUT
= 1.8 V
I
pk
I
sc
0
20
40
60
80
100
120
140
I
(mA)
out
(For specific values of I and I , please refer to Figure 13)
pk
sc
T , TEMPERATURE (°C)
A
Figure 13. Peak and Short Current
vs. Temperature
Figure 14. Output Voltage vs. Output Current
12
10
8
12
V
= 2.9 V
= 1.8 V
IN
V
= 2.9 V
= 1.8 V
IN
V
OUT
V
OUT
10
8
T = 25°C
A
500 mA
6
6
300 mA
4
4
2
2
50 mA
0
0
0
0
0.1
0.2
, OUTPUT CURRENT (A)
OUT
0.3
0.4
0.5
20
40
60
80
100
120
140
T , TEMPERATURE (°C)
I
A
Figure 15. Ground Current vs. Temperature
Figure 16. Ground Current vs. Output Current
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11
NCP3337
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
25°C
25°C
0°C
0°C
−20°C
−40°C
−20°C
−40°C
V
= 2.9 V
= 2.5 V
IN
V
= 2.9 V
= 1.8 V
IN
V
OUT
V
OUT
3.6
3.4
3.2
3
2.8
2.6
2.4
2.2
3.5
3.4
3.3
3.2
3.1
3
2.9
2.8
2.7
V
IN
, INPUT VOLTAGE (V)
V , INPUT VOLTAGE (V)
IN
Figure 17. Output Current Capability for the
1.8 V Version
Figure 18. Output Current Capability for the
2.5 V Version
100
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
V
= 3.4 V +0.5 V Modulation
PP
IN
V
OUT
= 2.5 V
T = 25°C
A
I
= 50 mA
out
I
= 50 mA
out
I
= 0.5 A
out
I
= 0.5 A
out
I
= 0.25 A
out
V
= 2.9 V +0.5 V Modulation
PP
I
= 0.25 A
IN
out
V
OUT
= 1.25 V
T = 25°C
A
100
1k
10k
F, FREQUENCY (Hz)
100k
1M
100
1k
10k
F, FREQUENCY (Hz)
100k
1M
Figure 20. PSRR vs. Frequency Adjustable
Version
Figure 21. PSRR vs. Frequency 2.5 V Version
600
500
400
300
200
100
0
600
500
400
300
200
100
0
C
= 0 nF
C = 0 nF
nr
nr
C
= 10 nF
nr
C
= 10 nF
nr
V
= 2.9 V
= 1.25 V
V
= 2.9 V
= 2.5 V
IN
IN
V
V
OUT
OUT
T = 25°C
T = 25°C
A
A
10
100
1k
10k
100k
1M
10
100
1k
10k
100k
1M
F, FREQUENCY (Hz)
F, FREQUENCY (Hz)
Figure 22. Output Noise Density Adjustable
Version
Figure 23. Output Noise Density 2.5 V Version
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12
NCP3337
Figure 24. Power Good Activation
Figure 25. Power Good Inactivation
300
250
200
150
15
10
V
in
at Data Sheet Test Conditions,
25°C, 1 mF Capacitance
Unstable Area
Stable Area
1 oz CF
2 oz CF
5.0
0
100
50
0
0
100
200
300
400
500
0
100
200
300
400
500
600
700
2
OUTPUT CURRENT (mA)
COPPER HEAT SPREADING AREA (mm )
Figure 26. Stability with ESR vs. Output
Current
Figure 27. DFN10 Self−Heating Thermal
Characterstics as a Function of Copper Area
on the PCB
NOTE: Typical characteristics were measured with the same conditions as electrical characteristics.
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13
NCP3337
APPLICATIONS INFORMATION
Reverse Bias Protection
temperature is exceeded. This feature provides protection
from a catastrophic device failure due to accidental
overheating. This protection feature is not intended to be used
as a substitute to heat sinking. The maximum power that can
be dissipated, can be calculated with the equation below:
Reverse bias is a condition caused when the input voltage
goes to zero, but the output voltage is kept high either by a
large output capacitor or another source in the application
which feeds the output pin.
Normally in a bipolar LDO all the current will flow from
the output pin to input pin through the PN junction with
limited current capability and with the potential to destroy
the IC.
Due to an improved architecture, the NCP3337 can
withstand up to 7.0 V on the output pin with virtually no
current flowing from output pin to input pin, and only
negligible amount of current (tens of mA) flowing from the
output pin to ground for infinite duration.
T
* T
A
J(max)
(eq. 1)
P
+
D
R
qJA
For improved thermal performance, contact the factory
for the DFN package option. The DFN package includes an
exposed metal pad that is specifically designed to reduce the
junction to air thermal resistance, R
.
qJA
Adjustable Operation
The output voltage can be set by using a resistor divider
as shown in Figure 2 with a range of 1.25 to 10 V. The
appropriate resistor divider can be found by solving the
equation below. The recommended current through the
resistor divider is from 10 mA to 100 mA. This can be
accomplished by selecting resistors in the kW range. As
Input Capacitor
An input capacitor of at least 1.0 mF, any type, is
recommended to improve the transient response of the
regulator and/or if the regulator is located more than a few
inches from the power source. It will also reduce the circuit’s
sensitivity to the input line impedance at high frequencies.
The capacitor should be mounted with the shortest possible
track length directly across the regular’s input terminals.
result, the I * R2 becomes negligible in the equation and
adj
can be ignored.
V
out + 1.25 * (1 ) R3ńR2) ) Iadj * R2
(eq. 2)
Output Capacitor
Power Good Operation
The NCP3337 remains stable with any type of capacitor
as long as it fulfills its 1.0 mF requirement. There are no
constraints on the minimum ESR and it will remain stable up
to an ESR of 5.0 W. Larger capacitor values will improve the
noise rejection and load transient response.
The Power Good pin on the NCP3337 will produce a logic
Low when it drops below the nominal output voltage. Refer
to the electrical characteristics for the threshold values at
which point the Power Good goes Low. When the NCP3337
is above the nominal output voltage, the Power Good will
remain at logic High.
Noise Reduction Pin
Output noise can be greatly reduced by connecting a 10 nF
The external pullup resistor needs to be connected
between V and the Power Good pin. A resistor of
in
capacitor (C ) between the noise reduction pin and ground
nr
approximately 100 kW is recommended to minimize the
current consumption. No pullup resistor is required if the
Power Good output is not being used. The Power Good does
not function during thermal shutdown and when the part is
disabled.
(see Figure 1). In applications where very low noise is not
required, the noise reduction pin can be left unconnected.
Dropout Voltage
The voltage dropout is measured at 97% of the nominal
output voltage.
Thermal Considerations
Internal thermal limiting circuitry is provided to protect the
integrated circuit in the event that the maximum junction
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14
NCP3337
ORDERING INFORMATION
Device
†
Nominal Output Voltage
Marking
Package
Shipping
NCP3337MN180R2G
1.8 V
2.5 V
3.3 V
5.0 V
Adj
P3337 180
DFN10
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
(Pb−Free)
NCP3337MN250R2G
NCP3337MN330R2G
NCP3337MN500R2G
NCP3337MNADJR2G
P3337 250
P3337 330
P3337 500
P3337 ADJ
DFN10
(Pb−Free)
DFN10
(Pb−Free)
DFN10
(Pb−Free)
DFN10
(Pb−Free)
†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.
*Please contact factory for other voltage options.
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15
NCP3337
PACKAGE DIMENSIONS
DFN10, 3x3, 0.5P
CASE 485C−01
ISSUE B
EDGE OF PACKAGE
D
A
B
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.25 AND 0.30 MM FROM TERMINAL.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
5. TERMINAL b MAY HAVE MOLD COMPOUND
MATERIAL ALONG SIDE EDGE. MOLD
FLASHING MAY NOT EXCEED 30 MICRONS
ONTO BOTTOM SURFACE OF TERMINAL b.
6. DETAILS A AND B SHOW OPTIONAL VIEWS
FOR END OF TERMINAL LEAD AT EDGE OF
PACKAGE.
L1
E
DETAIL A
Bottom View
PIN 1
(Optional)
REFERENCE
EXPOSED Cu
2X
0.15
C
MOLD CMPD
TOP VIEW
MILLIMETERS
2X
0.15
C
DIM MIN
0.80
A1 0.00
MAX
1.00
0.05
A
A3
(A3)
DETAIL B
A3
b
D
0.20 REF
0.18
3.00 BSC
0.10
0.08
C
C
0.30
A1
A
D2 2.40
2.60
DETAIL B
Side View
(Optional)
E
3.00 BSC
SEATING
PLANE
10X
E2 1.70
1.90
e
K
L
0.50 BSC
0.19 TYP
0.35
SIDE VIEW
A1
C
0.45
0.03
L1 0.00
SOLDERING FOOTPRINT*
D2
e
DETAIL A
10X
L
2.6016
1
5
E2
10X
K
1.8508
3.3048
2.1746
10
6
10X b
0.10
0.05
C
C
A
B
BOTTOM VIEW
NOTE 3
10X
0.5651
10X
0.5000 PITCH
0.3008
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
The products described herein NCP3337, may be covered by one or more of the following U.S. patents; 5,920,184, 5,966,004, and 5,834,926. There may be
other patents pending.
Micro8 is a trademark of International Rectifier.
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
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
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USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
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Phone: 81−3−5773−3850
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
Literature Distribution Center for ON Semiconductor
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Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
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Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
NCP3337/D
相关型号：
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