DRV8860X中文资料德州仪器数据手册PDF规格书

1 Features

1• 8-Channel Protected Low-side Driver

– Eight NMOS FETs with Overcurrent Protection

– Integrated Inductive Catch Diodes

– Serial Interface

– Open/Short Load Detection (DRV8860 only)

– Configurable 100% Output Timing

– Configurable PWM Duty Cycle

• Continuous Current Driving Capability

– 560 mA (Single Channel on) PW and PWP

– 200 mA (8 Channels on) PW

– 330 mA (8 Channels on) PWP

– Support Parallel Configuration

• 8 V to 38 V Supply Voltage Range PWM•

Input Digital Noise Filter for Noise Immunity

• Internal Data Read Back Capability for Reliable

Control

• Protection and Diagnostic Features

– Overcurrent Protection (OCP)

– Open Load Detection (OL)

– Overtemperature Shutdown (OTS)

– Undervoltage Lockout (UVLO)

– Individual Channel Status Report

– Fault Condition Alarm

2 Applications

• Relays, Unipolar Stepper Motors

• Solenoids, Electromagnetic Drivers

• General Low-side Switch Applications

• LED driver with dimmer functionality (DRV8860A)

3 Description

The DRV8860 provides an 8-channel low side driver

with overcurrent protection and open/shorted load detection. It has built-in diodes to clamp turn-off

transients generated by inductive loads, and can be

used to drive unipolar stepper motors, DC motors,

relays, solenoids, or other loads.

The PWP package can supply up to 330 mA × 8

channel and The PW package can supply up to 200 mA × 8 channel continuous output current. A single

channel can deliver up to 560 mA continuous output

current.

A serial interface is provided to control the DRV8860

output drivers, configure internal setting register and

read the fault status of each channel. DRV8860 devices can be daisy-chained together to use a single

serial interface. Energizing-time and holding-PWM•

Duty cycles are configurable through serial interface

as well. These functions allow for cooler running than

always-on solutions.

Internal shutdown functions are provided for

overcurrent protection, short-circuit protection,

undervoltage lockout, and overtemperature.

DRV8860A does not include open load detection.

Fault information for each channel can be read out

through serial interface and indicated by an external fault pin.