Stepper Motor Drivers

The HEROIC HR4988 is a microstepping bipolar stepper motor driver IC with an integrated translator, enabling precise step resolution control without complex microcontroller sequencing in 3D printers, CNC machines, and industrial automation systems. The HR4988 supports full-, half-, 1/4-, 1/8-, and 1/16-step modes selectable via MSx logic pins, and drives bipolar stepper motors at up to 32V and ±2A, with an on-resistance (R_DS(on)) of 640mΩ. The control interface accepts logic levels of 3V to 5.5V, ensuring direct compatibility with both 3.3V and 5V microcontrollers. An internal synchronous rectification circuit improves PWM efficiency, while thermal shutdown, UVLO, and overcurrent protection are all integrated. ABL Semi supplies the HR4988 as a 100% authentic HEROIC product in a thermally enhanced QFN-28 (5×5mm) package, with flexible MOQ as a pin-to-pin alternative to the Allegro A4988.

UMW L9110S is a dual-channel push-pull motor driver IC — a two-channel power amplifier ASIC designed to drive brushed DC motors, stepper motor windings, solenoid valves, and switching power circuits in low-voltage battery-powered applications. Operating from a supply voltage of 2.2V to 6.5V, the L9110S provides two independent output channels each capable of 200mA continuous output current at V_CC = 5V, with a low saturation voltage drop for efficient low-voltage operation. Both input control terminals are fully TTL/CMOS compatible, enabling direct connection to 3.3V or 5V microcontroller I/O pins without level-shifting components, and the device requires minimal external circuitry to implement complete bidirectional motor or valve drive. ABL Semi supplies the UMW L9110S in an SOP-8 package with flexible MOQ and 100% authentic, factory-original stock.