DRV81008-Q1中文资料具有跛行回家功能的汽车级 40V、330mA/通道 8 通道低侧驱动器数据手册TI规格书

描述 Description

The DRV81008-Q1 is an eight 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 DRV81008-Q1 has 630mΩ ON resistance. The device can support 330mA current per output when all the eight channels are ON simultaneously. Integrated clamp circuits on each output dissipates the stored energy during turning OFF inductive loads.

The DRV81008-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 DRV81008-Q1 an excellent choice for automotive body and powertrain applications.

特性 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: 330mA 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

< 3.5µA 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