# TB67S279FTG Stepping Motor Driver

## Features

️· Type: Clock-in controlled bipolar stepping motor driver
️· Active Gain Control (AGC): Built-in anti-stall architecture.
️· ACDS: Sense resistor less current control.
️· Rds(on): 0.6Ω (High + Low side).
️· Micro-stepping: Full, Half(a), Half(b), Quarter, 1/8, 1/16, 1/32 step resolutions.
️· Error Detection: Thermal shutdown (TSD), Over current detection (ISD), Power-on-reset (POR), Motor load open (OPD).
️· Error Output: Flags error states.
️· Internal Regulator: 5V regulator allows single power supply operation.
️· Adjustable PWM: Adjustable constant current PWM frequency via external components.
️· Package: QFN48 (7.0mm x 7.0mm) with thermal pad.
️· Ratings: 50V, 2.0A

## Pinout (Key Pins)

️· AGC0, AGC1: Active Gain Control setup pins.
️· CLIM0, CLIM1: AGC current limiter setup pins.
️· DMODE0, DMODE1, DMODE2: Step resolution setting pins.
️· CLK: Step clock input.
️· ENABLE: Motor output ON/OFF.
️· RESET: Electrical angle initialization.
️· VMA, VMB: Motor power supply inputs.
️· OUTA+, OUTA-, OUTB+, OUTB-: Motor outputs.
️· GND: Ground.
️· VCC: Internal regulator monitor.

## Functional Description

️· AGC: Reduces current during stall conditions to prevent motor stopping.
️· ACDS: Controls motor current without external sense resistors.
️· Micro-stepping: Allows for smooth and precise motor control.
️· Error Detection: Protects the driver and motor from faults.
️· Adjustable PWM: Allows customization of the PWM frequency for different applications.

## Electrical Characteristics

️· Supply Voltage: 50V max
️· Output Current: 2.0A
️· Rds(on): 0.6Ω
️· VCC Voltage: 5V (internal regulator)

## Application Notes

️· Thermal Management: Consider heat dissipation during operation.
️· PCB Layout: Solder corner pad and thermal pad to GND plane.
️· Component Selection: Use appropriate external components for PWM frequency adjustment.