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1 Features

? 3V to 40V Analog supply voltage

– Cranking capability down to 3V

– Supports LV124 standard

? 3V to 5.5V Digital supply voltage

– Compatible with 3.3V and 5V microcontrollers

? 44V minimum drain to source clamping voltage

? RDS(ON): 630mΩ typical at 12V, 25 °C

? Current: 470mA per output at 85 °C, with all

channels ON

? 2 parallel inputs with mapping functionality

? Fail-safe activation in Limp Home mode

– Using nSLEEP and IN pins

? Low-current sleep mode

– < 3μA using nSLEEP pin

? 16-bit SPI interface for control and diagnosis

– Daisy Chain capability

– Compatible with 8-bit SPI devices

? Supports various protection features -

– Reverse battery protection

– Short circuit to ground and battery protection

– Stable behavior at under voltage conditions

– Over Current latch OFF

– Overtemperature warning

– Thermal shutdown latch OFF

– Overvoltage protection

– Loss of battery and loss of ground protection

– Electrostatic discharge (ESD) protection

? Supports several diagnostic features -

– Diagnostic information via SPI register

– Over Load detection in ON state

– Open Load detection in OFF state

– Input and Output Status Monitor

2 Applications

? Automotive Body Control Module (BCM)

? HVAC Control

? Automotive Lighting

? Gasoline and Diesel Engine

? Vehicle Control Unit (VCU)

? Programmable Logic Controller (PLC)

? Pneumatic Valve

? General purpose relay driver

3 Description

The DRV81004-Q1 is a four channel low-side driver

with integrated protection and diagnostic features.

The device is specially designed to control relays in

automotive and industrial applications.

A serial peripheral interface (SPI) with daisy chain

capability is utilized for control and diagnosis of the

loads as well as of the device. Two input pins with

mapping functionality are available for direct PWM

control of the outputs. The device supports Limp

Home mode for fail-safe activation.

Each low-side switch of the DRV81004-Q1 has

630mΩ ON resistance. The device can support

470mA current per output when all the eight channels

are ON simultaneously. Integrated clamp circuits on

each output dissipates the stored energy when turning

OFF inductive loads.

The DRV81004-Q1 supports various protection

features such as undervoltage, overvoltage, short

circuit and open load detection. High level of

integration with embedded protection and diagnostic

features make the DRV81004-Q1 an excellent choice

for automotive body and powertrain applications.