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零件编号
产品描述 (功能)
L4957A 查看數據表(PDF) - STMicroelectronics
零件编号
产品描述 (功能)
生产厂家
L4957A
UP TO 5A ULDO LINEAR REGULATOR
STMicroelectronics
L4957A Datasheet PDF : 7 Pages
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L4957A
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
T
i
T
stg
Supply Input Voltage
Junction Temperature
Storage Temperature
Parameter
PINS CONNECTION
Value
Unit
16
V
-40 to +150
°
C
-40 to +150
°
C
3
OUT
2
GND
1
IN
D98IN838B
Versawatt (TO220)
3
OUT
2
GND
1
IN
D98IN933A
D2PAK
BLOCK DIAGRAM
V
IN
10
µ
F
IN
1
V
REF
CURRENT
LIMIT
PRE
REGULATOR
+
E/A
-
CHARGE
PUMP
BUFFER
THERMAL
SHUTDOWN
POWER
DMOS
200m
Ω
3
R
X
OUT
V
OUT
22
µ
F
R
Y
2
GND
D00IN1108A
PIN FUNCTIONS
Pin N
°
Name
1
IN
2 GND
3 OUT
Function
Unregulated input voltage; this pin must be bypassed with a capacitor larger than 10
µ
F.
To connect to Ground to get 1.5V, 1.8V, 2.5V or 3.3V output.
Regulated output voltage. A minimum bypass capacitor of 22
µ
F is required to insure stability.
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