描述 Description

The VNQ7003SY is a device made using

STMicroelectronics? VIPower? technology. It is

intended for driving resistive or inductive loads

directly connected to ground. The device is

protected against voltage transient on VCC pin.

An 8 bit short frame access to output control

registers is provided allowing PWM control

through SPI with high granularity.

An analog current feedback for each channel is

connected to the CURRENT-SENSE pin via a

multiplexer. The device detects open-load in OFFstate 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 this mode states of channel 0, 1, 2 or 3 are

respectively controlled by four dedicated pins IN0,

IN1, IN2 and IN3. Channel 0 and 1 can be

programmed via SPI for load type (BULB/ LED

mode).

特性 Features

? AEC-Q100 qualified

? General

– 16-bit ST-SPI for full diagnostic with 8 bits

Short Frame option

– Programmable Bulb/LED mode for

ch. 0-1

– 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

– Multiplex 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

– Two levels 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