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PDF L4950 Data sheet ( Hoja de datos )

Número de pieza L4950
Descripción (L4945 - L4951) 5V/8.5V/10V VERY LOW DROP VOLTAGE REGULATORS
Fabricantes SGS-THOMSON 
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L4945/L4950
L4951
5V/8.5V/10V VERY LOW DROP VOLTAGE REGULATORS
PRECISE OUTPUT VOLTAGE:
5V ± 4% (L4945)
8.5V ± 4% (L4950)
10V ± 4% (L4951)
OVER FULL TEMPERATURE RANGE
(– 40 / 125 °C)
VERY LOW VOLTAGE DROP (0.75Vmax)
OVER FULL TEMPERATURE RANGE
OUTPUT CURRENT UP TO 500mA
OVERVOLTAGE AND REVERSE VOLTAGE
PROTECTIONS
REVERSE VOLTAGE PROTECTION
SHORT CIRCUIT PROTECTION AND THER-
MAL SHUT-DOWN (with hysteresis)
LOW START UP CURRENT
DESCRIPTION
The devices are a monolithic integrated circuit in
Versawatt package specially designed to provide
a stabilized supply voltage for automotive and in-
dustrial electronic systems. Thanks to their very
BLOCK DIAGRAM
TO220
ORDERING NUMBER: L4945
L4950
L4951
low voltage drop, in automotive applications the
devices can work correctly even during the crank-
ing phase, when the battery voltage could fall as
low as 6V. Furthermore, they incorporate a com-
plete range of protection circuits against the dan-
gerous overvoltages always present on the bat-
tery rail of the car.
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
October 1992
1/6
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L4950 pdf
TO220 (VERSAWATT) PACKAGE MECHANICAL DATA
DIM.
A
C
D
D1
E
F
F2
G
H2
H3
L2
L3
L5
L6
L7
Dia
MIN.
2.4
1.2
0.35
0.8
1.15
4.95
10.05
26.3
2.6
15.1
6
3.65
mm
TYP.
5.08
16.2
26.7
MAX.
4.8
1.37
2.8
1.35
0.55
1.05
1.4
5.21
10.4
10.4
27.1
3
15.8
6.6
3.85
MIN.
0.094
0.047
0.014
0.031
0.045
0.195
0.396
1.035
0.102
0.594
0.236
0.144
L4945 - L4950 - L4951
inch
TYP.
0.200
0.638
1.051
MAX.
0.189
0.054
0.110
0.053
0.022
0.041
0.055
0.205
0.409
0.409
1.067
0.118
0.622
0.260
0.152
5/6
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