L9758 datasheet(7/29 Pages) STMICROELECTRONICS

7 / 29 page

L9758

Pins configuration

Doc ID 14273 Rev 3

7/29

REF_SEL

Tracking A voltage reference selection

VS_DIS

Sensor supply disable

REXT

External current reference resistance

RST_TIM

Reset timer adjustment

RSTL

VDDL regulator reset output

RST5

VDD5 regulator reset output

STBY_OK

Standby regulator monitor

VSTBY

Standby regulator output

VKAM

Standby memory regulator output

VPROG2

Standby regulator voltage selection (VSTBY)

VPROG1

Standby memory regulator voltage selection (VKAM)

CORE_DIS

VDDL and VCORE disable

VPROG3

VDDL voltage selection

VCORE_DRV

VCORE external pass transistor predriver output

VCORE_FDBK

VCORE feedback

VDDL_FDBK

VDDL feedback

VDDL_DRV

VDDL external pass transistor predriver output

VDD5

VDD5 linear regulator output

Switching preregulator output

FDBK

Switching voltage feedback

Buck regulator switch output

Table 3.

Control pins description

Pin name

Logic

level

Description

Type of

I/O

IGN

Low

Enter in Stand-by Mode if also PSU_EN is low

Pull

down

High

Enter in Run Mode

IGN_ON

Low

IGN is high

Open

drain

High

IGN is low

PSU_EN

Low

Enter in Stand-by Mode if also IGN is low

Pull

down

High

Enter in Run Mode

VS_DIS

Low

Enable VSB, VSC, VSD tracking regulators

Pull

down

High

Disable VSB, VSC, VSD tracking regulators

Ref_Sel

Low

Voltage reference for VSA tracking regulator is VDD5

Pull

down

High

Voltage reference for VSA tracking regulator is

VTRACK_REF

Table 2.

Pins description (continued)

Pin #

Name

Description

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