L9952GXP datasheet(3/68 Pages) STMICROELECTRONICS

Part #	L9952GXP

Description	Power management system IC

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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3 / 68 page

L9952GXP

Contents

Doc ID 13518 Rev 5

3/68

2.18.3

RxD pin in V1 standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.19

LINPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.20

Serial Peripheral Interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.20.1

Chip Select Not (CSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.20.2

Serial Data In (DI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.20.3

Serial Data Out (DO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.20.4

Serial Clock (CLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.20.5

Data registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3

Protection and diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1

Power supply fail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1.1

Over voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1.2

Under voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.2

Temperature warning and thermal shutdown . . . . . . . . . . . . . . . . . . . . . . 25

3.3

SPI diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.4

High side driver outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.5

Low side driver outputs Rel1, Rel2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5

ESD protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6

Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1

Operating junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.2

Temperature warning and thermal shutdown . . . . . . . . . . . . . . . . . . . . . . 30

6.3

Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.1

Supply and supply monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.2

Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.3

Power-on reset (Vs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.4

Voltage regulator V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.5

Voltage regulator V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.6

Reset generator (V1 supervision) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.7

Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

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