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L9346

QUAD INTELLIGENT POWER LOW SIDE SWITCH

STMicroelectronics 

®

L9346

QUAD INTELLIGENT POWER LOW SIDE SWITCH

QUAD POWER LOWSIDE DRIVER WITH 2 x 5A

AND 2 x 3A OUTPUT CURRENT CAPABILITY

LOW RDSON TYPICALLY 200mΩ AND 300mΩ

@ Tj = 25°C

INTERNAL OUTPUT CLAMPING STRUC-

TURES WITH VFB = 50V FOR FAST INDUC-

TIVE LOAD CURRENT RECIRCULATION

LIMITED OUTPUT VOLTAGE SLEW RATE

FOR LOW EMI

PROTECTED µP COMPATIBLE ENABLE

AND INPUT

WIDE OPERATING SUPPLY VOLTAGE

RANGE 4.5V TO 32V

REAL TIME DIAGNOSTIC FUNCTIONS:

- OUTPUT SHORTED TO GND

- OUTPUT SHORTED TO VSS

- OPEN LOAD MEASURED IN ON AND OFF

CONDITION

- LOAD BYPASS DETECTION

- OVERTEMPERATURE

DEVICE PROTECTION FUNCTIONS:

BLOCK DIAGRAM

Power SO20

Chip

ORDERING NUMBERS: L9346PD (power SO20)

L9346DIE (chip)

- OVERLOAD DISABLE

- REVERSE SUPPLY VOLTAGE

PROTECTED VS UP TO -2V

- SELECTIVE THERMAL SHUTDOWN

DESCRIPTION

The L9346 is a monolithic integrated quad low

side driver realized in an advanced Multipow-

IN1

Channel 1

D1

EN

OUT1

VS

Output

Control

52V

OUT4

Overtemp

R IO

IN4

R

QS

Delay

Timer

Overload

D4

Diagnostic

Control

Openload

Channel 4

IN2

Channel 2

D2

IN3

Channel 3

D3

OUT2

OUT3

May 2000

G ND

1/13

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