This document introduces the L293, L293E and L298N dual-bridge ICs, which can simplify the design and improve the efficiency of constant-current choppers.
This document describes a family of dedicated chips, specifically the L293, L293E, and L298N dual-bridge ICs, designed to simplify stepper motor drive circuitry. These devices integrate power-transistor bridges, predriver stages, and control logic, significantly reducing the external component count required for driving 2-phase bipolar stepper motors. The note highlights how these ICs improve reliability and efficiency compared to discrete component designs.
| Continuous Current (L293) | 1A |
|---|---|
| Continuous Current (L293E) | 1A |
| Continuous Current (L298N) | 2A |
| Supply Voltage (L293) | 36V |
| Supply Voltage (L298N) | 46V |
No, the document states that a single package drives a 2-phase bipolar stepper motor, challenging the assumption that unipolar motors are easier to drive.
The L293 and L293E handle 1A continuous.
The L298N has a maximum current rating of 2A.
The L293 and L293E support a maximum of 36V, while the L298N supports up to 46V.