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A3906 旨在用于低电压步进电动机、单路及双路直流电动机的脉冲调宽 (PWM) 控制，可在各通道输出高达 1 A 的电流，工作电压范围为 2.5 至 9 V。
A3906 内置固定关断时间 PWM 计时器，根据对电流感应电阻的选择，设置峰值电流。过流输出标记用于通知用户电动机绕组内的电流达到峰值电流的时间，该电流可由感应电阻感测。 输出故障不会影响驱动器运行。
A3906 采用 20-触点, 4 mm × 4 mm, 0.75 mm 标称总高度 QFN 封装, 裸露焊盘以增强散热。其包装均为无铅产品，且采用 100% 雾锡电镀。
