Overview
The L6219 is a bipolar monolithic integrated circuit designed by STMicroelectronics to control and drive both windings of a bipolar stepper motor or to bidirectionally control two DC motors. This device, with a few external components, forms a complete control and drive circuit for LS-TTL or microprocessor-controlled stepper motor systems. The power stage is a dual full bridge capable of sustaining up to 46 V and includes four diodes for current recirculation. It also features internal pulse-width-modulation (PWM) for output current control and thermal protection to ensure safe operating conditions.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Supply Voltage | Maximum supply voltage | 50 | V |
| Output Current (Peak) | Maximum peak output current | ±1 | A |
| Output Current (Continuous) | Maximum continuous output current | ±0.75 | A |
| Logic Supply Voltage | Logic supply voltage range | -0.3 to +7 | V |
| Operating Temperature Range | Operating temperature range | -40 to +125 | °C |
| Junction Temperature | Maximum junction temperature | +150 | °C |
| Package | Package type | SO-24 | |
| Number of Pins | Total number of pins | 24 |
Key Features
- Able to drive both windings of a bipolar stepper motor
- Output current up to 750 mA each winding
- Wide voltage range: 10 V to 46 V
- Half-step, full-step, and microstepping modes
- Built-in protection diodes
- Internal PWM current control
- Low output saturation voltage
- Designed for unstabilized motor supply voltage
- Internal thermal shutdown
Applications
The L6219 is suitable for various applications involving bipolar stepper motors and DC motors, including but not limited to:
- Automated systems requiring precise motor control
- Industrial automation
- Medical devices
- Printers and plotters
- Robotic systems
Q & A
- What is the primary function of the L6219?
The L6219 is designed to control and drive both windings of a bipolar stepper motor or to bidirectionally control two DC motors.
- What is the maximum supply voltage for the L6219?
The maximum supply voltage for the L6219 is 50 V.
- What is the maximum output current of the L6219?
The maximum continuous output current is ±0.75 A, with a peak startup current up to ±1 A.
- What are the operating temperature ranges for the L6219?
The operating temperature range is -40 to +125 °C.
- Does the L6219 have built-in thermal protection?
Yes, the L6219 features internal thermal shutdown to disable the outputs if the chip temperature exceeds safe operating limits.
- What types of stepping modes does the L6219 support?
The L6219 supports half-step, full-step, and microstepping modes.
- Is the L6219 compatible with LS-TTL or microprocessor-controlled systems?
Yes, the L6219 is compatible with both LS-TTL and microprocessor-controlled stepper motor systems.
- What package type is the L6219 available in?
The L6219 is available in an SO-24 package.
- Does the L6219 have built-in protection diodes?
Yes, the L6219 includes built-in protection diodes for current recirculation.
- How does the L6219 control output current?
The L6219 controls output current using internal pulse-width-modulation (PWM) and can be adjusted via two logic inputs and an external voltage reference.
