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UCC381DPTR-5 Datasheet(PDF) 3 Page - Texas Instruments

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Part # UCC381DPTR-5
Description  Low Dropout 1 Ampere Linear Regulator Family
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC381DPTR-5 Datasheet(HTML) 3 Page - Texas Instruments

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UCC281-3/-5/-ADJ
UCC381-3/-5/-ADJ
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications hold for TA = 0
°C to 70°C for the
UCC381-X series and
−40°C to +85°C for the UCC283-X series, VIN =VOUT + 1.5V, IOUT = 0mA, COUT = 2.2µF. CT = 1500pF for
the UCC381-ADJ version and VOUT set to 5V. TJ = TA.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
UCC381-3 Fixed 3.3V, 1A Family
Output Voltage
TJ = 25°C
3.25
3.3
3.35
V
Over Temperature
3.22
3.38
V
Line Regulation
VIN = 3.45V to 9V
1
3
mV
Load Regulation
IOUT = 0mA to 1A
2
5
mV
Dropout Voltage, VIN -VOUT
IOUT = 1A, VOUT = 3.15V, TA < 85°C
0.6
0.8
V
IOUT = 200mA, VOUT = 3.15V, TA < 85°C
100
200
mV
Peak Current Limit
VOUT = 0V
2
3.5
A
Overcurrent Threshold
1
1.8
A
Current Limit Duty Cycle
VOUT = 0V
3
5
%
Overcurrent Time Out, TON
VOUT = 0V
400
750
1600
µs
Quiescent Current
400
650
µA
Quiescent Current in Shutdown
VIN = 9V
10
25
µA
Shutdown Threshold
At CT Input
0.25
0.65
V
Reverse Leakage Current
1V < VIN <VOUT,VOUT < 3.35V, at VOUT
75
µA
UVLO Threshold
VIN where VOUT passes current
2.5
2.8
3.0
V
UCC381-ADJ Adjustable Output, 1A Family
Regulating Voltage at ADJ Input
TJ = 25°C
1.23
1.25
1.27
V
Over Temperature
1.22
1.28
V
Line Regulation, at ADJ Input
VIN =VOUT + 150mV to 9V
1
3
mV
Load Regulation, at ADJ Input
IOUT = 0mA to 1A
2
5
mV
Dropout Voltage, VIN -VOUT
IOUT = 1A, VOUT = 4.85V
0.5
0.6
V
IOUT = 200mA, VOUT = 4.85V
100
200
mV
Peak Current Limit
VOUT = 0V
2
3.5
A
Overcurrent Threshold
1
1.8
A
Current Limit Duty Cycle
VOUT = 0V
3
5
%
Overcurrent Time Out, TON
VOUT = 0V, CT = 1500pF
400
1000
1600
µs
Quiescent Current
400
650
µA
Quiescent Current in Shutdown
VIN = 9V
10
25
µA
Shutdown Threshold
At CT Input
0.25
0.65
V
Reverse Leakage Current
1V < VIN <VOUT,VOUT < 9V, at VOUT
100
µA
Bias Current at ADJ Input
100
250
nA
UVLO Threshold
VIN where VOUT passes current
2.5
2.8
3.0
V


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