L5958SM datasheet(7/20 Pages) STMICROELECTRONICS

7 / 20 page

L5958

Pin description

Doc ID 17716 Rev 2

7/20

Table 2.

Pin description

Pin N#

Pin name

Function

Type

1TAB

REG6(1P8P)

Output of Reg6 (1.8 V/100 mA)

RES

Reset signal for MCU application

4BU1

Connect to a reserve capacitor. When battery is

removed suddenly, the energy stored in this

capacitor can still supply reg5 and reg6 for some

time.

I/O

CRES

Connect a capacitor to delay reset signal

REG5(3P3P)

Output of Reg5 (3.3 V/100 mA)

GND

Power supply ground

Output of power switch

EN_SW

Enable signal for SW

AUDIO_LOW_IN

Hold Audio Low threshold adjustment

VDDCORE

Warn signal to 3.3 Vsw or 1. 8Vsw

VIN1

Power supply for Reg1,Reg2,Reg5,Reg6 and SW

CAN_LOW_IN

Hold CAN Low threshold adjustment

AUDIO_HIGH_OUT

Hold Audio High signal for MCU application

AUDIO_LOW_OUT

Hold Audio Low signal for MCU application

REG2(5V)

Output of Reg2

CAN_PRETEMP

Hold can low signal or hold can high signal with

load dump detection or pretemp warning

REG1(8P5)

Output of Reg1

EN_8P5_5

Enable signal for 5 V and 8.5 V

REG4(1P8sw)

Output of Reg4 (1.8 V/350 mA)

IGNOUT

Ignition signal output

VIN2

Power supply for Reg3 and Reg4

IGNIN

Ignition signal input

REG3((3P3sw)

Output of Reg3 (3.3 V / 250 mA)

EN_3P3_1P8

Enable signal for 3.3 Vperm and 1.8 Vperm.

A resistor of 1 k

 in series to this control pin is

suggested.

BU2

Connect to a reserve capacitor. When battery is

removed suddenly, the energy stored in this

capacitor can still supply reg3 and reg4 for some

time.

I/O

EN_3P3sw_1P8sw

Enable signal for 3.3 V and 1.8 V

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