DRV8841集成电路（IC）的电机驱动器控制器规格书PDF中文资料

DRV8841属于集成电路（IC）的电机驱动器控制器。由德州仪器制造生产的DRV8841电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。

1 Features

1• Dual H-Bridge DC Motor Driver

– Single and Dual Brushed DC

– Stepper

• PWM 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

T A = 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 DRV8841 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 DRV8841 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.