AN44183A
Key Features
- Built-in decoder for micro steps (2-phase, half step, 1-2 phase, W1-2 phase ,2W1-2 phase, and 4W1-2 phase excitation ) → Stepping motor can be driven by only external clock signal
- Interface: Clock (Rising edge detection and both edge detection)
- PWM can be driven by built-in CR (2-value can be selected during PWM OFF period.) →The selection of PWM OFF period enables the best PWM drive.
- Mix Decay control (4-value can be selected for Fast Decay ratio) → Mix Decay control can improve accuracy of motor current waveform.
- Built-in over-current protection (OCP) → If the current flows to motor output more than the setup value due to ground-fault etc., the OCP operates and all motor outputs are turned OFF.
- Built-in under voltage lockout (UVLO) → If supply voltage falls to less than the operating supply voltage range, the UVLO operates and all motor outputs are turned OFF.
- Built-in thermal protection (TSD)
