Texas Instruments DRV8844 Bedienungsanleitung

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DRV8844 Quad Half-Bridge Driver IC

1 Features

•Quad 1/2-H-Bridge DC Motor Driver

–Can Drive Four Solenoids, Two DC Motors,

One Stepper Motor, or Other Loads

–Full Individual Half Bridge Control

–Low MOSFET On-Resistance

•2.5A Maximum Drive Current at 24V, 25°C

•Floating Input Buffers Allow Dual (Bipolar)

Supplies (up to ±30V)

•Built-In 3.3V, 10mA LDO Regulator

•Industry Standard IN/IN Digital Control Interface

•8V to 60V Operating Supply Voltage Range

•Outputs Can Be Connected in Parallel

•Thermally Enhanced Surface Mount Package

2 Applications

•Textile Machines

•Office Automation Machines

•Gaming Machines

•Factory Automation

•Robotics

3 Description

The DRV8844 provides four individually controllable

1/2-H-bridge drivers. The device can be used to drive

two DC motors, one stepper motor, four solenoids,

or other loads. The output driver channel for each

channel consists of N-channel power MOSFET’s

configured in a 1/2-H-bridge configuration.

The DRV8844 can supply up to 2.5A peak or 1.75A

RMS output current per channel (with proper PCB

heatsinking at 24V and 25°C) per H-bridge.

Separate inputs to independently control each 1/2-

H-bridge are provided. To allow operation with split

supplies, the logic inputs and nFAULT output are

referenced to a separate floating ground pin.

Internal shutdown functions are provided for

over current protection, short circuit protection,

undervoltage lockout, and overtemperature.

The DRV8844 is available in a 28-pin HTSSOP

package with PowerPAD

™

(Eco-friendly: RoHS & no

Sb/Br).

Device Information

(1)

PART NUMBERPACKAGEPACKAGE SIZE

(2)

DRV8844HTSSOP (28)9.70mm × 6.40mm

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

the end of the data sheet.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

Simplified Schematic

DRV8844

SLVSBA2E – JULY 2012 – REVISED JULY 2025

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.

Produktspezifikationen