Dual-channel H-bridge Motor Driver Chip AT8841,2 Bits Current Control, Providing 4 Current Steps
Hangzhou Zhongke Electronics' AT88141 provides an integrated motor driver solution for printers and other electromechanical integration applications. AT8812C has two H-bridge drivers with a maximum output of 32V±2.5A. It can drive two DC brushed motors, or a bipolar stepper motor, or solenoids and other inductive loads. The bipolar stepping motor can run in full step, 2-subdivision, 4-subdivision, or realize high subdivision by software.
The power output module of each H-bridge of AT8841 is composed of N-type power MOSFET, called the H-bridge driver. Each bridge contains a rectifier circuit and a current-limiting circuit. which can realize independent half-bridge control and programmable attenuation mode.
Internal shutdown function includes overcurrent protection, short circuit protection, undervoltage
lockout protection and overtemperature protection, and provides a fault detection output pin.
AT8841 provides an ETSSOP28 package with an exposed pad, which can effectively improve the heat
dissipation performance, and is a lead-free product that meets environmental protection requirements.
Features
●Dual-Channel H-bridge Motor Driver
●Drive Two DC Brushed Motors or One Stepper Motor
●Low RDS(ON) resistance，360mΩ (HS+LS)
●2.5A Drive Output
●Wide Voltage Supply，8V-32V
●2 bits Current Control, Providing 4 Current Steps
●PWM control interface
●Internal 3.3V Reference Voltage Output
●Over-temperature Shutdown Circuit
●Short Circuit Protection
●Undervoltage Lockout Protection
Application
●POS Printer
●Stage Lighting
●Office Automation Equipment
●Game Console
●Robot
Package
Typical Application Diagram
Selection Guide
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