DRV8844PWPRG4.B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

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

• Floating Input Buffers Allow Dual (Bipolar)

Supplies (up to ±30 V)

• Built-In 3.3-V, 10-mA LDO Regulator

• Industry Standard IN/IN Digital Control Interface

• 8-V to 60-V 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. It 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 2.5-A peak or 1.75-A

RMS output current per channel (with proper PCB

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

Separate inputs to independently control each 1/2-Hbridge

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).