NCP4632
3A, Low Voltage, Low
Dropout Linear Voltage
Regulator with Reverse
Current Protection
The NCP4632 is a CMOS Linear voltage regulator with high output
current capability (up to 3 A). This device can provide output voltages
as low as 0.8 V while maintaining a low dropout voltage of 510 mV
typ. at full load. The NCP4632 is designed to draw only 350
mA
of
supply current and less than 1
mA
in standby mode to minimize current
consumption for battery operated applications. The device has a high
accuracy output voltage of
±1%
along with soft−start and reverse
current protection circuits to protect the device and the application.
The NCP4632 is available in a Pb−Free DPAK−5 package in both
fixed and adjustable output voltage options. The output voltage for the
fixed options can be modified in 0.1 V steps from 0.8 V to 4.2 V
Please contact your sales office for any additional fixed voltage
outputs to those already listed.
Features
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MARKING
DIAGRAM
E1Jxx1
yy
zz
DPAK−5
CASE 369AE
1 2 3 4 5
xx = Specific Device Code
YY = B − Without Active Discharge
= D − With Active Discharge
zz = Lot Number
•
Operating Input Voltage Range: 1.6 V to 5.25 V
•
Output Voltage Range: 0.8 to 4.5 V (0.1 V steps for fixed options)
•
Supply current: Typical Operation Mode − 350.0
mA
•
•
•
•
•
•
•
•
•
•
•
Standby Mode
− 1.0
mA
Dropout Voltage:
150 mV Typ. at I
OUT
= 1 A, V
OUT
= 2.5 V
510 mV Typ. at I
OUT
= 3 A, V
OUT
= 2.5 V
±1%
Output Voltage Accuracy
Line Regulation 0.15%/V Typ.
Current Fold Back Protection Typ. 220 mA
Stable with Ceramic Capacitors
Available in DPAK−5 Package (TO252−5)
These are Pb−Free Devices
Battery Powered Equipments
Portable Communication Equipments
Cameras, VCRs and Camcorders
Home appliances
NCP4632 (Fixed)
VIN
VOUT
SENSE
GND
VOUT
VIN
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
Typical Applications
VIN
NCP4632 (Adj)
VIN
VOUT
R1
VOUT
C2
10m
VADJ
R2
C1
10m
CE
C2
10m
C1
10m
CE
GND
Figure 1. Typical Application Schematics
©
Semiconductor Components Industries, LLC, 2017
1
February, 2017 − Rev. 3
Publication Order Number:
NCP4632/D
NCP4632
VIN
VOUT
SENSE/ADJ
VIN
VOUT
SENSE/
ADJ
Vref
Vref
Current Limit
Thermal Protection
GND
Reverse Detector
NCP4632B
CE
CE
Current Limit
Thermal Protection
GND
Reverse Detector
NCP4632D
Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
TO252−5−P2
4
2
3
1
5
Pin Name
VOUT
VIN
GND (Note 1)
CE
SENSE / ADJ
Output Voltage Pin
Input Voltage Pin
Ground Pin
Chip Enable Pin, Active “H”, Connect to VIN pin if not used.
Sense Pin on Fixed Options, ADJ for Adjustable
Description
1. TAB is internally connected to pin 3 GND.
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage
Output Voltage
Chip Enable Input
Sense Input
Output Current
Power Dissipation (Note 2)
Storage Temperature Range
Maximum Junction Temperature
ESD Capability, Human Body Model (Note 3)
ESD Capability, Machine Model (Note 3)
Symbol
V
IN
V
OUT
V
CE
V
sense
I
OUT
P
D(MAX)
T
STG
T
J(MAX)
ESD
HBM
ESD
MM
Value
6.0
−0.3 to V
IN
+ 0.3
−0.3 to 6.0
−0.3 to 6.0
3000
3800
−55 to 125
125
2000
200
Unit
V
V
V
V
mA
mW
°C
°C
V
V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
2. JEDEC standard 76.2mm x 114.3 mm, FR4 Four−layers board
3. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Latchup Current Maximum Rating tested per JEDEC standard: JESD78.
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, DPAK−5
Thermal Resistance, Junction−to−Air
Symbol
R
qJA
Value
53
Unit
°C/W
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2
NCP4632
ELECTRICAL CHARACTERISTICS
−40°C
≤
T
J
≤
85°C; V
IN
= V
OUT(NOM)
+ 1 V; I
OUT
= 1 mA; C
IN
= C
OUT
= 10
mF;
unless otherwise
noted. Typical values are at T
J
= +25°C.
Parameter
Operating Input Voltage (Note 4)
Output Voltage
T
J
= +25°C,
I
OUT
= 5 mA
−40°C
≤
T
J
≤
85°C,
I
OUT
= 5 mA
Output Voltage (Adjustable Option)
T
J
= +25°C,
I
OUT
= 5 mA
V
OUT
= ADJ
T
J
= −40 to 85°C
V
IN
= V
OUT
+ 0.5 V to 5 V, I
OUT
= 1 mA
V
IN
≥
1.6 V for NCP4632xDT08T5G, I
OUT
= 1 mA
1 mA
≤
I
OUT
< 300 mA
1 mA
≤
I
OUT
< 3000 mA
Dropout Voltage
T
J
= +25°C,
I
OUT
= 1000 mA
V
OUT
= 3.3 V
I
OUT
= 3000 mA
0.8 V
≤
V
OUT
< 0.9 V
0.9 V
≤
V
OUT
< 1.0 V
1.0 V
≤
V
OUT
< 1.1 V
1.1 V
≤
V
OUT
< 1.2 V
1.2 V
≤
V
OUT
< 1.5 V
1.5 V
≤
V
OUT
< 2.5 V
2.5 V
≤
V
OUT
< 3.3 V
3.3 V
≤
V
OUT
< 4.2 V
Short Current Limit
Quiescent Current
I
OUT
= 0 mA,
V
IN
= 5.25 V
V
OUT
= 0 V
V
OUT
≤
1.5 V
V
OUT
> 1.5 V
I
GND
I
STB
V
CEH
V
CEL
I
CEPD
V
IN
= V
OUT
+ 1 V or 2.2 V whichever is higher,
DV
IN
= 0.2 V
pk−pk
, I
OUT
= 300 mA, f = 1 kHz
V
OUT
= 1.5 V, I
OUT
= 300 mA, f = 10 Hz to 100 kHz
V
IN
= 4 V, V
CE
= 0 V
V
OUT
> 0.5 V, 0 V
≤
V
IN
< 5.25 V
PSRR
V
N
R
LOW
I
REV
0.3
55
60
30
10
1.0
0.4
0.6
mA
dB
mV
rms
W
mA
1
I
SC
I
Q
V
DO
V
DO
V
OUT
> 1.5 V
V
OUT
≤
1.5 V
V
OUT
> 2 V
V
OUT
≤
2 V
V
ADJ
Test Conditions
Symbol
V
IN
V
OUT
Min
1.6
x0.99
−15
x0.97
−45
0.792
0.8
Typ
Max
5.25
x1.01
15
x1.02
30
0.808
Unit
V
V
mV
V
mV
V
Output Current
Line Regulation
Load Regulation
I
OUT
Line
Reg
Load
Reg
3
0.15
−15
−70
2
3
100
20
50
A
%/V
mV
mV
Dropout Voltage
0.910
0.865
0.810
0.755
0.720
0.630
0.510
0.480
220
390
350
1.110
1.000
0.950
0.895
0.840
0.760
0.600
0.560
V
mA
450
430
450
mA
mA
V
mA
Supply Current
Standby Current
CE Pin Threshold Voltage
I
OUT
= 3000 mA
V
CE
= 0 V, T
J
= 25°C
CE Input Voltage “H”
CE Input Voltage “L”
CE Pull Down Current
Power Supply Rejection Ratio
Output Noise Voltage
Auto Discharge Low Output Nch Tr.
On Resistance
Reverse Current Limit
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
4. The maximum Input Voltage of the ELECTRICAL CHARACTERISTICS is 5.25 V. In case of exceeding this specification, the IC must be
operated on condition that the Input Voltage is up to 5.5 V and the total operating time is within 500 hrs.
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NCP4632
TYPICAL CHARACTERISTICS
0.9
0.8
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
1 mA
10 mA
100 mA
1A
2A
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
3A
2A
1A
100 mA
10 mA
1 mA
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 3. Output Voltage vs. Input Voltage at
NCP4632xDT08
3.0
2.5
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.0
2A
1.5
1.0
0.5
0.0
100 mA
10 mA
1 mA
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
1A
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Figure 4. Output Voltage vs. Input Voltage at
NCP4632xDT15
2A
1A
100 mA
10 mA
1 mA
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 5. Output Voltage vs. Input Voltage at
NCP4632xDT28
400
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
350
300
250
200
150
100
50
0
0
T
J
= 25°C
I
out
= 0
C
in
= C
out
= 10
mF
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
450
400
350
300
250
200
150
100
50
0
0
Figure 6. Output Voltage vs. Input Voltage at
NCP4632xDT33
T
J
= 25°C
I
out
= 0
C
in
= C
out
= 10
mF
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 7. Quiescent Current vs. Input Voltage
at NCP4632xDT08
Figure 8. Quiescent Current vs. Input Voltage
at NCP4632xDT15
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NCP4632
TYPICAL CHARACTERISTICS
450
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
400
350
300
250
200
150
100
50
0
0
T
J
= 25°C
I
out
= 0
C
in
= C
out
= 10
mF
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
450
400
350
300
250
200
150
100
50
0
0
T
J
= 25°C
I
out
= 0
C
in
= C
out
= 10
mF
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 9. Quiescent Current vs. Input Voltage
at NCP4632xDT28
0.9
0.8
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
1
2
3
4
5
6
7
OUTPUT CURRENT (A)
V
in
= 5.5 V
T
J
= 25°C
C
in
= C
out
= 10
mF
V
in
= 3 V
V
in
= 1.8 V
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
Figure 10. Quiescent Current vs. Input Voltage
at NCP4632xDT33
V
in
= 5.5 V
V
in
= 2.5 V
V
in
= 3.5 V
T
J
= 25°C
C
in
= C
out
= 10
mF
3
4
5
6
7
1
2
OUTPUT CURRENT (mA)
Figure 11. Output Voltage vs. Output Current
at NCP4632xDT08
4
3.5
3
2.5
2
1.5
1
0.5
0
0
1
2
3
4
5
T
J
= 25°C
C
in
= C
out
= 10
mF
6
7
8
V
in
= 4.3 V
V
in
= 5 V
V
in
= 5.5 V
DROPOUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
0.6
0.5
0.4
0.3
0.2
Figure 12. Output Voltage vs. Output Current
at NCP4632xDT15
25°C
85°C
−40°C
0.1
0
0
0.5
1
1.5
2
2.5
3
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Figure 13. Output Voltage vs. Output Current
at NCP4632xDT33
Figure 14. Dropout Voltage vs. Output Current
at NCP4632xDT15
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