Dual-channel H-bridge Motor Driver Chip with A Wide Supply Voltage of 8V~32V
Hangzhou Zhongke Microelectronics' Dual-channel H-bridge Motor Driver Chip AT8812C 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±1.2A. It can drive two DC brushed motors, a bipolar stepper motor, 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 AT8812C is composed of N-type power MOSFET, called the H-bridge driver. Each bridge contains a rectifier circuit and a current-limiting circuit. The device adopts an industry-standard parallel digital control interface, and the decay mode is programmable.
Internal shutdown function includes overcurrent protection, short circuit protection, under-voltage lockout protection, and overtemperature protection, and provides a fault detection output pin.
AT8812C 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, 1.2Ω (HS+LS)
● 1.2A Drive Output
● Wide Voltage Supply, 8V-32V
● 2 bits Current Control, Providing 4 Current Steps
● Industry Standard Parallel Digital Control Interface
● PWM Winding Current Regulation and Limitation
● Internal 3.3V Reference Voltage Output
● Over-temperature Shutdown Circuit
● Short Circuit Protection
● Under-voltage Lockout Protection
Application
● POS Printer
● Stage Lighting
● Office Automation Equipment
● Game Console
● Robot
Typical Application Diagram
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