The TB67S539FTG from Toshiba is a Two-Phase Bipolar Stepping Motor Driver IC that utilizes a pulse width modulation (PWM) chopper for efficient operation. It requires an input voltage of 4.5-34 V and provides an output current of 1.8 A. This IC is developed using the advanced BiCD process that is used for driving bipolar stepping motors with precision. It incorporates an advanced current detect system (ACDS), enabling PWM constant-current control without the need for external current detection resistors, and advanced dynamic mixed decay (ADMD) for high efficiency during PWM constant-current operation.
This IC supports clock input control and offers multiple-step resolutions, including full, half, quarter, 1/8, 1/16, and 1/32 steps for flexible motor operation. It is built with D-MOSFET output transistors and handles high voltage and current. This motor driver IC integrates protection mechanisms such as thermal shutdown (TSD), over-current detection (ISD), and under-voltage lockout (UVLO). It reduces the need for external charge pump components. It is available in a surface-mount package that measures 5 x 5 mm and is ideal for industrial applications.
