Overview
The E-L6219R, produced by STMicroelectronics, is a bipolar monolithic integrated circuit designed to control and drive both windings of a bipolar stepper motor or to bidirectionally control two DC motors. This device is part of a complete control and drive circuit for LS-TTL or microprocessor-controlled stepper motor systems. It features a dual full-bridge power stage capable of sustaining up to 10V and includes four diodes for current recirculation. The E-L6219R also incorporates internal pulse-width-modulation (PWM) current control, built-in protection diodes, and thermal shutdown protection to ensure safe and efficient operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | 4.5 to 10 | V |
| Logic Supply Voltage (VSS) | 4.75 to 5.25 | V |
| Output Current (peak) | ±1 | A |
| Output Current (continuous) | ±0.5 | A |
| Operating Temperature Range | -20 to +85 | °C |
| Storage Temperature Range | -55 to +150 | °C |
| Junction Temperature | +150 | °C |
| Thermal Resistance Junction-case | 18 | °C/W |
| Thermal Resistance Junction-ambient | 75 | °C/W |
| Package | 24-SOIC (0.295", 7.50mm Width) | |
| Mounting Type | Surface Mount |
Key Features
- Able to drive both windings of a bipolar stepper motor or bidirectionally control two DC motors.
- Output current up to 500 mA each winding.
- Wide voltage range: 4.5 V to 10 V.
- Supports 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 protection.
- Cross conduction protection to avoid simultaneous cross conduction during switching current direction.
Applications
The E-L6219R is suitable for a variety of applications, including:
- General purpose stepper motor control systems.
- LS-TTL or microprocessor-controlled stepper motor systems.
- Automated machinery and robotics where precise motor control is required.
- Industrial automation and control systems.
Q & A
- What is the maximum output current of the E-L6219R?
The maximum output current is up to 500 mA per winding, with a peak start-up current of up to 1 A.
- What is the operating voltage range of the E-L6219R?
The operating voltage range is from 4.5 V to 10 V.
- Does the E-L6219R support microstepping?
- What kind of protection features does the E-L6219R have?
The device includes built-in protection diodes, cross conduction protection, and internal thermal shutdown protection.
- What is the package type of the E-L6219R?
The package type is 24-SOIC (0.295", 7.50mm Width).
- What is the maximum junction temperature of the E-L6219R?
The maximum junction temperature is +150°C.
- How does the E-L6219R control the output current?
The output current is controlled through internal PWM and can be set using two logic inputs and an external voltage reference.
- What is the purpose of the phase input on the E-L6219R?
The phase input determines the direction of current flow through the load and includes a Schmitt trigger for noise immunity and a delay circuit to prevent output stage short circuits.
- Is the E-L6219R suitable for surface mounting?
- What is the storage temperature range for the E-L6219R?
The storage temperature range is from -55°C to +150°C.
