DRV8844PWPRG4.A中文资料德州仪器数据手册PDF规格书

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).