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PDF L4947PD Data sheet ( Hoja de datos )
| Número de pieza | L4947PD | |
| Descripción | 5V-0.5A VERY LOW DROP REGULATOR WITH RESET | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L4947PD (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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® L4947PD
5V-0.5A VERY LOW DROP REGULATOR WITH RESET
PRECISE OUTPUT VOLTAGE (5V ± 4%)
OVER FULL TEMPERATURE RANGE
(– 40 / 125 °C)
VERY LOW VOLTAGE DROP (0.75Vmax)
OVER FULL T RANGE
OUTPUT CURRENT UP TO 500mA
RESET FUNCTION
POWER-ON RESET DELAY PULSE DE-
FINED BY THE EXTERNAL CAPACITOR
+ 80V LOAD DUMP PROTECTION
– 80V LOAD DUMP PROTECTION
REVERSE VOLTAGE PROTECTION
SHORT CIRCUIT PROTECTION AND THER-
MAL SHUT-DOWN (with hysteresis)
LOW START UP CURRENT
DESCRIPTION
The L4947PD is a monolithic integrated circuit in
HiPSO package specially designed to provide a
stabilized supply voltage for automotive and in-
dustrial electronic systems. Thanks to its very low
voltage drop, in automotive applications the
L4947PD can work correctly even during the
cranking phase, when the battery voltage could
BLOCK DIAGRAM
PowerSO20
ORDERING NUMBER: L4947PD
fall as low as 6V. Furthermore, it incorporates a
complete range of protection circuits against the
dangerous overvoltages always present on the
battery rail of the car. The reset function makes
the device particularly suited to supply microproc-
essor based systems : a signal is available (after
an externally programmable delay) to reset the
microprocessor at power-on phase ; at power-off,
this signal becomes low inhibiting the microproc-
essor.
INPUT
17
PNP OUTPUT
TRANSISTOR
ANTI
SAT.
OUTPUT
3
DUMP
PROTECT.
START
REF.
THERMAL
PROTECTION
RESET
CIRCUIT
ERROR
AMP.
OUTPUT
CURRENT
LIMITER
RESET
OUTPUT
19
GROUND
This1is-2a0dvanced information on a new product now in development or undergoing evaluation. Details are subject to change without 1n-o2t0ice.
2 DELAY CAPACITOR
D94AT106
June 2000
1/6
1 page  
DIM.
mm
inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 3.6 0.142
a1 0.1
0.3 0.004
0.012
a2 3.3 0.130
a3 0
0.1 0.000
0.004
b 0.4
0.53 0.016
0.021
c 0.23
0.32 0.009
0.013
D (1) 15.8
16 0.622
0.630
D1 9.4
9.8 0.370
0.386
E 13.9
14.5 0.547
0.570
e 1.27
0.050
e3 11.43
0.450
E1 (1) 10.9
11.1 0.429
0.437
E2 2.9 0.114
E3 5.8
6.2 0.228
0.244
G0
0.1 0.000
0.004
H 15.5
15.9 0.610
0.626
h 1.1 0.043
L 0.8
1.1 0.031
0.043
N 10° (max.)
S 8° (max.)
T 10
0.394
(1) ”D and F” do not include mold flash or protrusions.
- Mold flash or protrusions shall not exceed 0.15 mm (0.006”).
- Critical dimensions: ”E”, ”G” and ”a3”
L4947PD
OUTLINE AND
MECHANICAL DATA
JEDEC MO-166
PowerSO20
NN
b
DETAIL A
e3
H
D
20
E2
1
h x 45
T
R
a2 A
e DETAIL B
E
lead
c
a1
DETAIL A
a3
DETAIL B
slug
11 0.35
Gage Plane
- C-
SL
SEATING PLANE
GC
E1 BOTTOM VIEW
(COPLANARITY)
10
PSO20MEC
E3
D1
5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet L4947PD.PDF ] | |
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