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PDF L4953K Data sheet ( Hoja de datos )
| Número de pieza | L4953K | |
| Descripción | MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L4953K (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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® L4953K
MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
3 OUTPUTS:
8.25V (500mA); 5V (1A); 5V (100mA)
STANDBY
OUT1 (8.25V) AND OUT2 (5V) WITH INDE-
PENDENT ENABLE CONTROL FOR STAND-
BY MODE
1.5A HIGH SIDE DRIVER WITH CLAMPED
OUTPUT (16V)
LOGIC OUTPUT FOR:
– SUPPLY UNDERVOLTAGE (LVW)
– OVERVOLTAGE(FAULT)
– THERMAL PROTECTION (FAULT)
RESET FUNCTION
IGNITION COMPARATOR
REVERSE BATTERY AND LOAD DUMP
PROTECTION
THERMAL SHUTDOWN
DESCRIPTION
The L4953K contains a triple voltage regulator
and a power switch.
The IC includes a monitoring circuit to warn if a
BLOCK DIAGRAM
Multiwatt 15
ORDERING NUMBER: L4953K
low voltage or no voltage condition is occuring.
In stand-by output is active as long as possible
even when in thermal shutdown or any other fault
conditions.
The STCAP pin allows the use of a reserve sup-
ply capacitor that will hold enough energy for the
5V Stand-by line to allow the µP to store data.
7
VS
LOAD DUMP
AND REV
BATT PROT
3
SIG GND
EN 5V
STCAP
1
12
2
EN 8.25V
15
EN 16V
5
IGN INP
PROT
5V, 100mA
REGULATOR
STAND-BY
5V, 1000mA
REGULATOR
SWITCHED
11
STAND-BY 5V
9
OUT 5V
8.25V, 500mA
REGULATOR
SWITCHED
10
OUT 8.25V
16V, 1.5A
VOLTAGE CLAMP
SWITCHED
4
OUT 16V
VCAP
REF Vref1 LVW THRESHOLD
GEN Vref2 Reset THRESHOLD
IGNITION THRESHOLD
OVERVOLTAGE
UNDERVOLTAGE
THERMAL PROT
RESET
POW GND
8
D94AU213B
6
IGN OUT
13
LVW/FAULT
14
RESET
June 2000
1/8
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1 page  
PIN 5: ING INP
PIN 6: IGN OUT
L4953K
36.3K
9.7K 5.7V 5.3K
D95AU404
D95AU405
7K
PIN 7: VS
PIN 9: OUT 5V
7.5V
7.5V
5.7V
9K
28K
23K 7.5V
780K
33K
D95AU406
PIN 10: OUT 8.25V
D95AU407
4K
PIN 11: STAND-BY 5V
D95AU408
3.8K
D95AU409
123K
5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet L4953K.PDF ] | |
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