1

Pin description

1

2

3

5

6

4

7

8

9

10

27

11

28 29 30 31 32

59 58 57 56

54

55

53 52 51 50 49

43

42

41

39

38

40

48

47

46

44

45

22 23 24 25 26

60

61

62

63

64

17 18 19 20 21

37

36

34

33

35

12

13

14

15

16

LQFP64

GHSB_A

A

RSPHS_

GHST_A

CHS_A

VT_FB

RSP_T

RSN_T

GLS_T

VTANK

VBAT

GND_P

TM1

DAOUT_A

DAOUT_B

DAOUT_P

GND_A

GHSB_B

_B

RSPHS

GHST_B

CHS_B

GLS_P

HPPL

GHS_P

HPPH

CHS_P

IRQ

SCK

CS

DIN

DOUT

VCCI

CLK_EXT

GAPGPS00335

Pin #

Name

Function

Type

Note

1

GND_A

Analog ground connection

Supply

-

2

DAOUT_P Fuel pump current feedback output

Analog OUT

-

3

DAOUT_B Bank B current feedback output

Analog OUT

-

4

DAOUT_A Bank A current feedback output

Analog OUT

-

5

TM1

Test mode

Digital IN

Internal pull-down Force

to GND

6

GND_P

Power ground connection

Supply

-

7

VBAT

Direct Vbat power supply

Supply

-

8

VTANK

VTank power supply

Supply

-

9

GLS_T

Pre-driver output for DC/DC converter power N-channel

MOSFET

Analog OUT

-

10

RSN_T

DC/DC converter negative reference for current sensing

amplifier

Analog IN

-

L9781

Pin description

DB3720 - Rev 1

page 2/10