L5956 データシートの表示（PDF） - STMicroelectronics

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L5956

Multifunction voltage regulator for car radio

STMicroelectronics 

L5956

Timing diagrams

Figure 6. Hold and thermal protection

DUMP

22

18

VIN1

9

9.5V

8.5V

5V

3.3V

5

HOLD

TEMPERATURE

PROTECTION

8.5V

REG1(8.5V)

5V

REG2(5V)

5V

REG3(5V)

3.3V

REG4(3.3V)

5V

EN1-3

EN4

Figure 7. Ignition buffer diagram

50V

IGNITION

INPUT1.27V

1.17V

IGNITION

OUTPUT

14V

VIN1

Figure 8. Protection of the power switch

VSW

16V

ON T≅160

D02AU1423A

LOAD DUMP

D02AU1424

DELAYED

NOT

IN CASE

DELAYED VIN1 <16V

1.5A

3A

D02AU1425

ISW

11/16

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