L9779WD datasheet(15/170 Pages) STMICROELECTRONICS

15 / 170 page

DocID027452 Rev 5

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L9779WD

Pins description

169

OUT13

Output low-side 13 for relay (low.

bat.)

Power output

Open drain

OUT14

Output low-side 14 for relay (low.

bat.)

Power output

Open drain

OUT15

output low-side 15 for relay

Power output

Open drain

OUT16

Output low-side 16 for relay

Power output

Open drain

OUT17

Output low-side 17 for relay

Power output

Open drain

OUT18

Output low-side 18 for relay

Power output

Open drain

PGND

Power GND

PGND

Power GND

PGND

Ignition pre-driver

IGN1

Output ignition driver 1

Power output

IGN2

Output ignition driver 2

Power output

IGN3

Output ignition driver 3

Power output

IGN4

Output ignition driver 4

Power output

GND_STEP Analog GND

AGND

Main relay driver

MRD

Main relay driver

Power output

Open drain

Low current drivers (50 mA)

OUT19

Output low-side 19

Power Output

Open drain

OUT20

Output low-side 20

Power Output

Open drain

Ext MOS pre-driver

DRAIN8

Ext. drain voltage sense for OUT8

Input

OUT8

Gate driver for ext MOS OUT8

Power output

DRAIN9

Ext. Drain voltage sense for OUT9

Input

OUT9

Gate driver for ext MOS OUT9

Power output

MSC interface

CLP

Clock positive for differential

interface

DGT Input

CLN

Clock negative for differential

interface

DGT Input

DIP

Downstream data positive for

differential interface

DGT Input

DIN

Downstream data negative for

differential interface

DGT Input

Enable pin

DGT Input

Table 2. Pins description (continued)

Pin#

Name

Function

Type

Polarization/note

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