Overview

The LV8734V is a 2-channel H-bridge driver IC that can switch a stepping motor driver, which is capable of micro-step drive and supports 2W 1-2 phase excitation, and two channels of a brushed motor driver, which supports forward, reverse, brake, and standby of a motor. It is ideally suited for driving brushed DC motors and stepping motors used in office equipment and amusement applications.

Features

• Single-channel PWM current control stepping motor driver (selectable with DC motor driver channel 2) incorporated.

• BiCDMOS process IC

• Low on resistance (upper side : 0.48Ω ; lower side : 0.32Ω ; total of upper and lower : 0.8Ω ; Ta = 25°C, IO = 1.5A)

• Excitation mode can be set to 2-phase, 1-2 phase, W1-2 phase , or 2W1-2 phase

• Excitation step proceeds only by step signal input

• Motor current selectable in four steps

• Output short-circuit protection circuit (selectable from latch-type or auto-reset-type) incorporated

• Unusual condition warning output pins

• Built-in thermal shutdown circuit

• No control power supply required