PWM constant-current stepping motor driver IC: TC78S600FNG/FTG

The TC78S600FNG is a successor to the TB6608FNG. It provides micro-step control with a clock signal and can be used in applications that require 1-2-phase, W1-2-phase, 2W1-2 phase and 4W1-2 phase excitation modes. The on-resistance is 1.2 ohm (max); thus its current consumption and power dissipation are small. Therefore, the TC78S600FNG/FTG is suitable for battery-powered applications. There are several irregularity detection circuits, such as overcurrent protection (OCP), thermal shutdown (TSD) circuit and undervoltage lockout (UVLO) circuits.
Recommended applications include projectors, security cameras and auto-cleaners for air conditioners. The TC78S600FTG is offered in a WQFN package.

This is a photo of the TC78S600FNG/FTG

Features

  • Motor power supply voltage: VM=15V (max)
  • Output current: Iout ≤ 1.0A (max)
  • PWM constant-current stepping motor driver
  • Output on-resistance: Ron=1.2Ω (upper + lower)
  • Clockwise/counterclockwise/short brake/standby
  • Overcurrent protection (OCP) circuit 
  • Thermal shutdown (TSD) circuit
  • Undervoltage lockout (UVLO) circuit
  • 1-2-phase, W1-2-phase, 2W1-2 phase and 4W1-2 phase excitation modes

Block Diagram

This figure shows block diagram of TC78S600FNG/FTG.

Contacts

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