Thermal

Shut down

OUT1

GND

(multiple pins)

VCLAMP

LATCH

SDATIN

SCLK

Internal

Reference

Regs

UVLO

Int. VCC

nFAULT

Control

Logic

RESET

nENBL

VM

LS Gate

Drive

OUT2

OUT3

OUT4

OCP

&

Gate

Drive

8.2V – 60V

OCP

&

Gate

Drive

OCP

&

Gate

Drive

OCP

&

Gate

Drive

8.2V – 60V

Optional

Zener

Inductive

Load

Inductive

Load

Inductive

Load

Inductive

Load

SDATOUT

DRV8804

SLVSAW4F – JULY 2011 – REVISED DECEMBER 2015

www.ti.com

7 Detailed Description

7.1 Overview

The DRV8804 is an integrated 4-channel low side driver solution for a low side switch application. A serial

interface controls the low-side driver outputs and allows for multiple drivers to be chained together and save

space on communication lines. The four low-side driver outputs consist of four N-channel MOSFETs that have a

power the low side gate drive. The device outputs can be disabled by bringing nENBL pin logic high. This device

has several safety features including integrated overcurrent protection that limits the motor current to a fixed

maximum above which the device will shut down. Thermal shutdown protection enables the device to

automatically shut down if the die temperature exceeds a TTSD limit and will restart once the die reaches a safe

threshold.

7.2 Functional Block Diagram

8

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