5.9V to 45 V

DRV8701

H-Bridge Gate

Driver

VREF

PH/EN or PWM

Controller

Gate

drive

sense

sense output

nSLEEP

Shunt Amp

Protection

FETs

nFAULT

M

LDO

3.3 & 4.8 V

30 mA

High-side

Low-side

High-side

gate drive

current

Low-side

gate drive

current

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

DRV8701

SLVSCX5B – MARCH 2015 – REVISED JULY 2015

DRV8701 Brushed DC Motor Full-Bridge Gate Driver

1 Features

2 Applications

1

•

Single H-Bridge Gate Driver

•

Industrial Brushed-DC Motors

•

Robotics

–

Drives Four External N-Channel MOSFETs

•

Home Automation

–

Supports 100% PWM Duty Cycle

•

Industrial Pumps and Valves

•

5.9-V to 45-V Operating Supply Voltage Range

•

Power Tools

•

Two Control Interface Options

•

Handheld Vacuum Cleaners

–

PH/EN (DRV8701E)

–

PWM (DRV8701P)

3 Description

•

Adjustable Gate Drive (5 Levels)

The DRV8701 is a single H-bridge gate driver that

–

6-mA to 150-mA Source Current

uses four external N-channel MOSFETs targeted to

–

12.5-mA to 300-mA Sink Current

drive a 12-V to 24-V bidirectional brushed DC motor.

•

Supports 1.8-V, 3.3-V, and 5-V Logic Inputs

A

PH/EN

(DRV8701E)

or

PWM

(DRV8701P)

•

Current Shunt Amplifier (20 V/V)

interface

allows

simple

interfacing

to

controller

circuits.

An

internal

sense

amplifier

allows

for

•

Integrated PWM Current Regulation

adjustable current control. The gate driver includes

–

Limits Motor Inrush Current

circuitry to regulate the winding current using fixed

•

Low-Power Sleep Mode (9

μA)

off-time PWM current chopping.

•

Two LDO Voltage Regulators to Power External

DRV8701 drives both high- and low-side FETs with

Components

–

AVDD: 4.8 V, up to 30-mA Output Load

external FETs is configurable with a single external

resistor on the IDRIVE pin.

–

DVDD: 3.3 V, up to 30-mA Output Load

A low-power sleep mode is provided which shuts

•

Small Package and Footprint

down internal circuitry to achieve very-low quiescent

–

24-Pin VQFN (PowerPAD™)

current draw. This sleep mode can be set by taking

–

4.0 × 4.0 × 0.9 mm

the nSLEEP pin low.

•

Protection Features:

Internal

protection

functions

are

provided:

–

VM Undervoltage Lockout (UVLO)

undervoltage

lockout,

charge

pump

faults,

overcurrent

shutdown,

short-circuit

protection,

–

Charge Pump Undervoltage (CPUV)

predriver

faults,

and

overtemperature.

Fault

–

Overcurrent Protection (OCP)

conditions are indicated on the nFAULT pin.

–

Pre-Driver Fault (PDF)

–

Thermal Shutdown (TSD)

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

Fault Condition Output (nFAULT)

DRV8701

VQFN (24)

4.00 × 4.00 x 0.90 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

SPACE

Gate-Drive Current

Simplified System Block Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.