VNF9Q20F datasheet(5/109 Pages) STMICROELECTRONICS

Part #	VNF9Q20F

Description	4-channel high-side driver with STi²Fuse protection for automotive power distribution applications

PDF	109 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

5 / 109 page

Functional description

2.1

Device interfaces

•

SPI: bi-directional interface, accessing RAM/ROM registers (CSN, SCK, SDI, SDO).

•

PWM_CLK: PWM engine external clock.

•

DIx: multipurpose pins configurable through OTP.

–

MCUext bit = 1 (default): input pins for outputs control while the device is in fail-safe mode or normal

mode.

–

MCUext bit = 0: DI0 assumes digital diagnostic function while DI1 works as global I²t protection

unlatch controller (active high).

•

VREG: DC output of internal preregulator (4 V–6 V). DC supply input for the digital control part. A capacitor

in series with a resistor should be connected between this pin and GND

•

VDD: DC supply of the SPI Interface. 3.3 V and 5 V compatible. A further external diode might be

connected from VDD pin (anode) to VREG pin (cathode) to ensure a redundant supply to the digital part.

•

STDBY_NOT: Standby mode enabler (active low).

VNF9Q20F

Functional description

DS13909 - Rev 6

page 5/109

VNF9Q20F Datasheet(PDF) 5 Page - STMicroelectronics