Overview
The L6219DS is a dual full-bridge PWM motor driver designed and manufactured by Allegro MicroSystems. This integrated circuit is specifically engineered to drive both windings of a bipolar stepper motor or to bidirectionally control two DC motors. The device features internal pulse-width modulation (PWM) control for output current, allowing for precise and efficient motor control. The L6219DS is packaged in a 24-pin surface-mountable SOIC, making it suitable for a variety of applications requiring robust motor control.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Motor Supply Voltage (VBB) | 45 | V |
| Logic Supply Voltage (VCC) | 4.75 to 5.25 | V |
| Logic Input Voltage Range (VIN) | -0.3 to VCC+0.3 | V |
| Output Current, Peak (IOUT(pk)) | 1.0 | A |
| Output Current, Continuous (IOUT) | 750 mA | mA |
| Operating Ambient Temperature (TA) | -20 to 85 | °C |
| Maximum Junction Temperature (TJ(max)) | 150 | °C |
| Storage Temperature (Tstg) | -55 to 150 | °C |
| Package Thermal Resistance (RθJA) | 77 (1-layer PCB), 49 (1-layer PCB with 3.57 in.2 of copper area) | °C/W |
| Output Saturation Voltage (VCE(SAT)) | 0.4 to 1.2 V (depending on current) | V |
| Mounting Type | Surface Mount | |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) |
Key Features
- Independent Current Control: Each bridge can sense and control output current independently using an external sense resistor and internal comparator.
- PWM Current Control: The device includes internal PWM control for precise regulation of output current.
- Logic Control of Output Current: Two logic-level inputs allow digital selection of motor winding current at 100%, 67%, 33%, or 0% of the maximum level.
- Protection Features: Includes ground clamp and flyback diodes for protection against inductive transients, and thermal protection circuitry to disable outputs if the chip temperature exceeds safe limits.
- Low Output Saturation Voltage: Optimized for low output saturation voltage drop (less than 1.8 V total source plus sink at 500 mA).
- Step Resolution: Supports step resolutions of 1 and 1/2 steps.
Applications
The L6219DS is designed for general-purpose motor control applications, particularly suited for driving bipolar stepper motors and brushed DC motors. It is ideal for use in various industrial, automotive, and consumer electronics where precise and efficient motor control is required.
- Bipolar Stepper Motor Control
- Brushed DC Motor Control
- Industrial Automation
- Automotive Systems
- Consumer Electronics
Q & A
- What is the primary function of the L6219DS motor driver?
The L6219DS is designed to drive both windings of a bipolar stepper motor or to bidirectionally control two DC motors.
- What is the maximum motor supply voltage for the L6219DS?
The maximum motor supply voltage is 45 V.
- How is the output current controlled in the L6219DS?
The output current is controlled using PWM and can be set by external sense resistors and internal comparators. Additionally, two logic-level inputs allow digital selection of the motor winding current.
- What are the key protection features of the L6219DS?
The device includes ground clamp and flyback diodes for protection against inductive transients and thermal protection circuitry to disable outputs if the chip temperature exceeds safe limits.
- What is the operating temperature range of the L6219DS?
The operating ambient temperature range is -20°C to 85°C.
- What is the package type of the L6219DS?
The L6219DS is packaged in a 24-pin surface-mountable SOIC.
- Can the L6219DS be used for half-step operations?
Yes, the device supports half-step operations by allowing the microprocessor to control the motor at a constant torque between all positions in an eight-step sequence.
- What is the maximum output current of the L6219DS?
The maximum continuous output current is 750 mA, with a peak current rating of 1.0 A.
- Is the L6219DS still in production?
No, the L6219DS is listed as an obsolete part.
- What technology is used in the L6219DS?
The device uses Power MOSFET technology.
