L6203 datasheet | motor driver & h bridge | pinout & price

L6203 Pinout Equivalent

1：Overview of the L6203 ：

L6203 chip is a product developed by STMicroelectronics. It is a high-performance dual-channel H-bridge motor driver designed specifically for controlling DC motors and bipolar stepper motors. The input voltage range for the L6203 is 12-48V, with a continuous current output of 4A (peaking at 5A). It is compatible with TTL/CMOS logic signals, enabling forward and reverse rotation, braking, and speed adjustment of the motor. The L6203 features safety protection mechanisms such as overcurrent protection, overheating protection, and short-circuit protection, ensuring excellent system reliability.

2：L6203  Important pin function definition:

3：Alternative model recommendation

IL9001：IL9001 is a full-bridge driver for motor control applications that integrates isolated DMOS power transistors with CMOS and bipolar circuits on a single chip. The DMOS output transistors can operate at supply voltages up to 42V and offer high efficiency at high switching speeds. All logic inputs are compatible with TTL, CMOS, and µC. Each channel (half bridge) is controlled by an individual logic input, while a common enable signal controls both channels.

DRV8251ADDAR：The DRV8251ADDAR is a high-performance dual-channel H-bridge motor driver chip introduced by Texas Instruments (TI), specifically designed for controlling DC motors and bipolar stepper motors. This device integrates low on-resistance power MOSFETs, supporting a wide input voltage range of 6-45V and providing continuous current output of 2A with a peak of 3A. It can control motor forward/reverse rotation, braking, and PWM speed regulation through TTL/CMOS compatible logic signals.

BDR6122T：The BDR6122T chip is a single-channel motor driver produced by ROHM, often referred to as a ‘little helper.’ It functions like an intelligent switch, specifically designed to control the start, stop, direction, and speed of small motors. It is particularly suitable for low-power devices such as toys and small appliances. Compared to the previously mentioned DRV8231, the BDR6122T features a single-channel design, making it ideal for projects that require controlling only one motor. Additionally, it has a smaller size and lower cost, making it especially suitable for scenarios where space and budget are critical considerations.

GC8548：This chip is a dual-channel motor driver launched by our domestic company. It features two independent smart switches that can simultaneously control the start, stop, direction, and speed of two motors, making it particularly suitable for projects requiring multiple motors to work together. This is a highly cost-effective solution for multi-motor driving.

4、Comparison of main parameters for several models