Features

• AEC-Q100 qualified

• General

– Extreme low voltage operation for deep cold cranking applications

(compliant with LV124, revision 2013)

– 24-bit ST-SPI for full diagnostic and digital current sense feedback

– Integrated 10-bit ADC for digital current sense

– Integrated PWM engine with independent phase shift and frequency

generation (for each channel)

– Programmable Bulb/LED mode for all channels

– Advanced limp-home functions for robust fail-safe system

– Very low standby current

– Optimized electromagnetic emissions

– Very low electromagnetic susceptibility

– Control through direct inputs and/or SPI

– Compliant with European directive 2002/95/EC

• Diagnostic functions

– Digital proportional load current sense

– Synchronous diagnostic of over load and short to GND, output shorted

to VCC and OFF-state open-load

– Programmable case overtemperature warning

• Protection

– Load current limitation

– Self limiting of fast thermal transients

– Undervoltage shutdown

– Overvoltage clamp

– Latch-off or programmable time limited auto restart (power limitation and

overtemperature shutdown)

– Load dump protected

– Protection against loss of ground

Description

The VN9D5D20FN is a device made using STMicroelectronics VIPower technology. It is intended for driving

resistive or inductive loads directly connected to the ground. The device is protected against voltage transient

on VCC pin. Programming, control, and diagnostics are implemented via the SPI bus. A digital current sense

feedback for each channel is provided through an integrated 10-bit ADC with 0.1 of FSR. Dedicated trimming

bits allow to adjust the ADC reference current. The device is equipped with four outputs controllable via SPI

or with the 2-OTP assignable direct inputs. The device detects open-load in OFF-state conditions. Real-time

diagnostic is available through the SPI bus (open-load, output short to VCC, overtemperature, communication

error, power limitation or latch off). Output current limitation protects the device in an over load condition. The

device can limit the dissipated power to a safe level up to thermal shutdown intervention. Thermal shutdown can

be configured as latched off or programmable time-limited auto restart. The device enters a limp-home mode in

case of loss of digital supply (VDD), reset of digital memory or watchdog monitoring time-out event. In limp-home

mode each output is set according to the programmed register: to be always OFF, or according to the 2x direct

inputs pins.