Features: PWM chopper-type bipolar stepping motor driver IC TB6600HQ / HG is a single-chip PWM bipolar sinusoidal chopper type stepper motor micro step driver. Can control 2-phase stepper motor in forward and reverse rotation With a 1-2, W1 -2 phase 2W1 -2 phase, 4W1 -2-phase excitation mode. Just a clock signal can drive two-phase bipolar stepper motor to achieve low vibration, high efficiency work. Single-chip bipolar sinusoidal micro step motor driver 5 kinds of sub-modes can be selected (1/1, 1/2, 1/4, 1/8, 1/16 step) With reset and enable pins, With standby function Break the traditional single-supply operation Built-in thermal protection (TSD) circuit, Built-in voltage protection (UVLO) circuit, Built-in over-current detection (ISD) circuit Specifications: Voltage: 40V Current:4.5A Process: BiCD 0.13 nm Process Withstand voltage: 50V ON resistance (upper + lower) = 0.4 Ω CW/CCW: support Output current: IOUT = 5.0A (peak within 100ms) Rated output: IOUT = 4.5 A Package: HZIP25 - 1.00F Input pull-down resistor: 100 KΩ Current output alarm pin: Ialert = 1mA Monitoring output pin (MO): Imo = 1mA Size: 10.3*6*3.6cm/4.06*2.36*1.42in Weight: 115g Package includes: 1 x stepper motor driver 1、PWM chopper-type bipolar stepping motor driver IC 2、TB6600HQ / HG is a single-chip PWM bipolar sinusoidal chopper type stepper motor micro step driver. 3、 Can control 2-phase stepper motor in forward and reverse rotation 4、 With a 1-2, W1 -2 phase 2W1 -2 phase, 4W1 -2-phase excitation mode. 5、 Just a clock signal can drive two-phase bipolar stepper motor to achieve low vibration, high efficiency work.