L297 Stepper Motor Controller, can drive two-phase bipolar and four-phase unipolar stepper motors
The L297 is a stepper motor controller IC designed for microcomputer-controlled applications. It generates four-phase drive signals for both bipolar and unipolar step motors, supporting normal, wave, and half-step drive modes. The device features on-chip PWM chopper circuits for switch-mode current control and requires only clock, direction, and mode input signals, reducing the burden on the microprocessor.
| Supply voltage | 4.75 V to 7 V |
|---|---|
| Total power dissipation | 1 W |
| Storage and junction temperature | -40 to + 150 °C |
| Quiescent supply current | 50 to 80 mA |
| Clock time | 0.5 µs |
The L297 is available in DIP20 and SO20 packages.
Yes, it supports half-step, normal, and wave drive modes.
An active low pulse on the RESET input restores the translator to the home position (state 1).