器件名称:
A3901
功能描述:
Dual Full Bridge Low Voltage Motor Driver
文件大小:
339.22KB 共11页
简 介:
A3901 Dual Full Bridge Low Voltage Motor Driver Features and Benefits Low RDS(on) outputs Full- and half-stepping capability Small package Forward, reverse, and brake modes for dc motors Sleep mode with zero current drain PWM control up to 250 kHz Crossover-current protection Thermal shutdown (TSD) Description The A3901 is a dual full-bridge motor driver, designed for low voltage portable applications involving bipolar stepper or brush dc motors. The outputs have been optimized for low voltage drop, with currents up to ±400 mA (±800 mA with outputs paralleled) and an operating voltage range of 2.5 to 5.5 V. The four inputs (IN1 to IN4) can control a bipolar stepper motor in full- or half-step mode, or dc motors in forward, reverse, or brake mode. The inputs can be PWMed for current or speed control at frequencies up to 250 kHz. Internal protection circuitry includes thermal shut down (TSD) and crossover (shoot-through) protection. The A3901 is supplied in a 3 x 3 x 0.75 mm nominal, 10-lead DFN/MLP package, with exposed thermal pad (package “EJ”). This small footprint package is lead (Pb) free, with 100% matte tin leadframe plating. Package: 10 Contact DFN/MLP (suffix EJ) Approximate Scale 1:1 Typical Application +VBAT 10 F 10 V IN1 IN2 CPU IN3 IN4 OUT4 GND VBB OUT1 M OUT2 A3901 OUT3 Figure 1. Typical stepper motor control +VBAT 10 F 10 V IN1 IN2 CPU IN3 IN4 OUT4 GND GND +VBAT VBB OUT1 10 F 10 V IN1 IN2 CPU VBB OUT1 M OUT2 M OUT2 A3901 OUT3 A3901 IN3 OUT3……
