L5957 データシートの表示（PDF） - STMicroelectronics

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L5957

Multifunction voltage regulator for car radio

STMicroelectronics 

L5957

1

Block and pins connection diagrams

Block and pins connection diagrams

Figure 1. Block diagram

VINI (MAIN)

EN_SW

BU

VIN2

ENREG3(5V)

ENREG1-4(8.5V, 3.3V)

POWER

SWITCH

REG1

REG2

REG3

REG4

SW

REG 1(8.5V)

REG 2(PERM)(5V)

REG 3(5V)

REG 4(3.3V)

HOLD

THERMAL DUMP LOAD

PROTECTION PROTECTION

IGNIN

IGNITION

BUFFER

RESET

BUFFER

RES

CRES

Figure 2. Pins connection

IGNOUT

D02AU1342/L5957

VIN2

REG3(5V)

N.C.

REG1(8.5V)

SW

N.C.

VIN1

BU

REG2(5V)

HEATSINK

20

1

19

2

18

3

17

4

16 PowerSO 5

15

6

14

7

13

8

12

9

11

10

D02AU1343 /L5957

REG4(3.3V)

IGNIN

IGNOUT

RES

CRES

ENREG1-4(8.5V, 3.3V)

ENREG3(5V)

EN_SW

HOLD

GND

15

14

13

12

11

10

9

Multiwatt 8

7

6

5

4

3

2

1

VIN2

REG3

REG1

SWITCH

BU

REG2

VIN1

GND

HOLD

EN SW

ENREG1, 4

ENREG3

CRES

RES

REG4

D03AU1513/L5957

Doc ID 14442 Rev 2

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