DRV8843PWPRG4.B中文资料德州仪器数据手册PDF规格书

1 Features

1• Dual H-Bridge Motor Driver

– Single/Dual Brushed DC

– Stepper

• IN/IN Control Interface

• Optional Fixed Frequency Current Regulation

– Two Bit Current control Allows Up to Four

Current Levels

• Low MOSFET On-Resistance

– 2.5-A Maximum Drive Current at 24 V

and TA = 25°C

– Combined 400 mΩ RDS(ON) of High-Side and

Low-Side at 24 V and TA = 25°C

• 8.2-V to 45-V Operating Supply Voltage Range

• Low Current Sleep Mode

• Built-In 3.3-V Reference Output

• Thermally Enhanced Surface Mount Package

• Protection Features

– Overcurrent Protection (OCP)

– Thermal Shutdown (TSD)

– Undervoltage Lockout (UVLO)

– Fault Condition Indication Pin (nFAULT)

2 Applications

• Printers

• Scanners

• Office Automation Machines

• Gaming Machines

• Factory Automation

• Robotics

3 Description

The DRV8843 provides an integrated dual H-bridge

motor driver solution for printers, scanners, and other automated equipment applications. The device can

be used to drive one or two brushed DC motors, a

bipolar stepper motor, or other loads. A simple PWM

interface allows easy interfacing to controller circuits.

The output driver block consists of N-channel power

MOSFETs configured as H-bridges. The DRV8843 an

supply up to 2.5-A peak or 1.75-A RMS output

current (with proper heat sinking at 24 V and

TA = 25°C) per H-bridge.

A low-power sleep mode is provided which shuts

down internal circuitry to achieve very low quiescent

current draw. This sleep mode can be set using a

dedicated nSLEEP pin.

Internal protection features are provided for

overtemperature, overcurrent, and undervoltage.

Fault conditions are indicated by a nFAULT pin.