Overview

The LV8968BB is a multi−purpose three−phase BLDC predriver for

automotive applications and developed in compliance with ISO

26262. This 3−phase peripheral predriver offers a BEMF (Back

ElectroMotive Force) output and the wide operating voltage range and

AEC−Q100 qualification make this device ideal for automotive

applications. Six gate drivers provide 400 mA (typ) gate current to

external power bridges allowing use of low resistance power FETs as

well as logic level FETs. All FETs are protected against overcurrent,

short−circuit, overtemperature and gate undervoltage. A multitude of

protection and monitoring features make this device suitable for

applications with functional safety (FuSa) requirements. Three

independent low−side source pins allow multiple shunt measurement.

The device also includes a programmable linear regulator, a fast

current sense amplifier and a window watchdog for microcontroller

support. The SPI interface allows for real time parameter setup and

diagnostics. Critical system parameters can be programmed into

nonvolatile OTP memory.

Junction temperature tolerance up to 175°C and control via wide

level WAKE and PWM signals make the LV8968BB an ideal motor

predriver for a wide range of ISO 26262 related actuators, fans and pumps.

Features

• Full Drive Power from 8 V to 28 V Supply Voltage with Transient

Tolerance from 4.5 V to 40 V

• Extended Voltage Range from 6 V to 33 V Using Logic Level Mode

• Up to 30 kHz Motor PWM with Individual Six Gate Control or

Drive−3 Mode with Integrated Programmable Dead Time

• 5 V / 3.3 V Linear Regulator for External Loads up to 50 mA

• Extensive System Protection Features Including:

♦ Drain−Source Short Detection for External FET

♦ Overcurrent Shutoff

♦ Low Gate Voltage Warning

♦ Overtemperature Warning and Shutoff

♦ Over / Undervoltage Protection

• SPI Interface for Parameter Setup and Diagnostic Access, Dynamic

Access to Dead Time, Amplifier Gain, and Short−Circuit Levels

• Nonvolatile (OTP) Memory for Storing Critical System Parameters

• Wide Voltage Enable Line and PWM Interface

• Integrated Window Watchdog Timer Function

• AEC−Q100 Qualified and PPAP Capable

• Thermally Efficient Exposed Die 48 Pin SQFP Package for Transient

Operation Up to 175°C

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

Typical Applications

• Suspension, Park Brake, Transmission,

Steering Pump, Vacuum Pump, Battery

Pack Cooling, Sliding Door, Lift Gate etc.

• Robotics

• Light E−mobility and Motive Power

• Industrial Equipment

• White Goods