TOSHIBA TC78H670FTG ultra compact stepper motor driver
The Toshiba TC78H670FTG ultra compact stepper motor driver is a powerful and flexible two-phase bipolar stepper motor driver that uses a PWM chopper and has a built-in dual H-bridge. This motor is suitable for industrial, consumer, and healthcare equipment that requires high integration of 1 to 4 batteries or 12V power supply. The TC78H670FTG stepper motor driver can operate in the voltage range of 2.5V to 16V and has a 2A output current processing capability. This motor driver has a resolution of 128 levels and can provide ultra precision control without the need for complex closed-loop design. The TC78H670FTG stepper motor driver allows full step, half step, quarter step, 1/8, 1/16, 1/32, 1/64, and 1/128 step operations.

The TC78H670FTG stepper motor driver integrates a built-in Advanced Current Detection System (ACDS) for current protection without the need for resistor detection. This saves both costs and circuit board space. This driver provides thermal shutdown (TSD), overcurrent shutdown, motor load open circuit, and undervoltage lockout (UVLO) error detection functions, and has flag output function. The TC78H670FTG stepper motor driver can flexibly control speed and direction in simple clock input or host supported serial interfaces. The motor driver adopts a compact and high heat dissipation efficiency QFN16 package.

features

Built in dual H-bridge:
Capable of controlling one bipolar stepper motor
Good power density of 2.5-16V/2.0A
PWM controlled constant current drive
Working voltage of 2.5V to 16V power supply
2A output rated current (maximum value)
Ultra low standby current: 0.1uA (maximum)
Low on resistance (high+low side=0.48 Ω (typical value)) MOSFET output stage
Advanced current detection system (ACDS) does not require current protection to detect resistors
The chopping frequency of the motor can be adjusted by an external resistor

128 microsteps allow for ultra fine adjustment of step by step, even for low resolution types of stepper motors
Allow full step, half step, quarter step, 1/8, 1/16, 1/32, 1/64, and 1/128 step operations
Multiple error detection function:
Thermal shutdown (TSD)
Overcurrent shutdown detection (ISD)
Motor load open circuit (OPD)
Under voltage lockout (UVLO)
Error detection (TSD/ISD/OPD) flag output function
A voltage regulator with built-in V to copy internal circuits
Small QFN16 package with thermal conductive pads (3mm x 3mm and 0.5mm spacing)