The L6219R is a dual bidirectional bridge stepper motor driver from STMicroelectronics with high output current, wide voltage range, built-in overcurrent and thermal protection, suitable for various stepper motor control systems.
The L6219R is a bipolar monolithic integrated circuit designed to control and drive both windings of a bipolar stepper motor or bidirectionally control two DC motors. It is intended for use in LS-TTL or microprocessor-controlled stepper motor systems. The device includes a dual full-bridge power stage capable of sustaining 10 V, along with built-in protection diodes for current recirculation.
Key features include internal pulse-width-modulation (PWM) current control, half-step and full-step modes, and microstepping capability. The chip incorporates cross-conduction protection, thermal shutdown circuitry, and is designed for operation with unstabilized motor supply voltages ranging from 4.5 V to 10 V.
| Output current (peak) | +1 A |
|---|---|
| Output current (continuous) | +0.5 A |
| Motor supply range | 4.5 to 10 V |
| Operating temperature range | -20 to +85 °C |
| Thermal shutdown temperature | 170 °C |
| Thermal resistance junction-case | Max. 18 °C/W |
The peak output current is 1 A, while the continuous output current is 0.5 A per bridge.
The device is designed for an unstabilized motor supply voltage ranging from 4.5 V to 10 V.
Yes, it includes an internal thermal shutdown circuitry that disables the outputs if the chip temperature exceeds safe limits.