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廬

L4953

MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO

3 OUTPUTS:

10V (500mA); 5V (1A); 5V (100mA) STANDBY

OUT1 (10V) AND OUT2 (5V) WITH INDE-

PENDENT ENABLE CONTROL FOR STAND-

BY MODE

3A HIGH SIDE DRIVER WITH CLAMPED

OUTPUT (16V)

LOGIC OUTPUT FOR:

鈥?SUPPLY UNDERVOLTAGE (LVW)

鈥?OVERVOLTAGE

鈥?THERMAL PROTECTION

RESET FUNCTION

IGNITION COMPARATOR

REVERSE BATTERY AND LOAD DUMP

PROTECTION

THERMAL SHUTDOWN

DESCRIPTION

The L4953 contains a triple voltage regulator and

a power switch.

The IC includes a monitoring circuit to warn if a

BLOCK DIAGRAM

VS

7

LOAD DUMP

AND REV

BATT PROT

POW GND

3

5V, 100mA

REGULATOR

STAND-BY

5V, 1000mA

REGULATOR

SWITCHED

11

Multiwatt 15

ORDERING NUMBER:

L4953

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

碌P

to store data.

STAND-BY 5V

9

OUT 5V

EN 5V

STCAP

EN 10V

1

12

10V, 500mA

REGULATOR

SWITCHED

10

OUT 10V

2

16V, 3A

VOLTAGE CLAMP

SWITCHED

4

OUT 16V

EN 16V

15

VCAP

REF

GEN

5

Vref1 LVW THRESHOLD

Vref2 Reset THRESHOLD

IGNITION THRESHOLD

OVERVOLTAGE

UNDERVOLTAGE

THERMAL PROT

RESET

IGN INP

PROT

SIG GND

8

6

D94AU053A

13

LVW/FAULT

14

RESET

IGN OUT

June 2000

1/6

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L4953相關(guān)型號(hào)PDF文件下載

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  IC,VOLT REGULATOR,FIXED,+8.5V,BIPOLAR,SIP,3PIN,PLASTIC 
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  英文版
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• L4956
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  L4956
• L4956
  英文版
  5A LOW DROP LINEAR REGULATOR
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  L4957
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  英文版
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• L4953K
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