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L4957AD1.8 Datasheet(PDF) 3 Page - STMicroelectronics

Part No. L4957AD1.8
Description  UP TO 5A ULDO LINEAR REGULATOR
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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L4957AD1.8 Datasheet(HTML) 3 Page - STMicroelectronics

   
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ELECTRICAL CHARACTERISTICS (Tj =25
°C, VIN = 5V, unless otherwise specified).
= Specifications referred to T
J from 0
°C to +125°C.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VIN
Operating Supply Voltage
3
14
V
VO
Output Voltage
3.15V < VIN < 5.25V; IO = 0.1A
1.485
1.5
1.515
V
VIN = 3.3V
±5%; 0.1A < IO <5A
1.47
1.5
1.53
V
VIN = 3.3V
±5% IO = 0.1A
VIN =5V
±5%
1.782
1.8
1.818
V
VIN = 3.3V
±5% (0.1A < IO < 45A)
VIN =5V
±5%
0.1A < IO <5A
1.764
1.8
1.836
V
VIN = 3.3V
±5% IO = 0.1A
VIN =5V
±5%
2.475
2.5
2.525
V
VIN = 3.3V
±5% (0.1A < IO < 2.2A)
VIN =5V
±5%
0.1A < IO <5A
2.45
2.5
2.55
V
VIN =5V
±5%
IO = 0.1A
3.267
3.3
3.333
V
VIN =5V
±5%
0.1A < IO <5A
3.234
3.3
3.366
V
RDSON
Drain-Source ON
Resistance
300
m
IO
Current Limiting
5.1
6.3
7.5
A
IQ
Quiescent Current
3V < VIN < 14V
0.6
2
mA
Ripple Rejection
f = 120Hz, IO =1A
VIN =5V
∆VIN =2VPP
60
75
dB
THERMAL DATA
Symbol
Parameter
TO220
D2PAK
Unit
Rth j-case
Thermal Resistance Junction-case
Max.
2.5
3
°C/W
Rth j-amb
Thermal Resistance Junction-ambient
Max.
50
60
°C/W
Thermal Shutdown
Typ.
150
°C
Thermal Hysteresis
Typ.
20
°C
-40
-20
0
20
40
60
80
100 120 140 160
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Tj [
°C]
3V < Vin < 6.5V
Iout = 10mA
Figure 1: Line Regulation vs. Junction
Temperature
012345
-5
-4
-3
-2
-1
0
1
2
3
4
5
Iout [A]
Vin = 5V
Tj = 25
°C
(Pulsed technique has been used)
Vout = 1.5V
Figure 2: Load Regulation
L4957A
3/7


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