onsemi LV8413GP-TE-L-H: Datasheet, Pinout, and Application Circuit Guide
The onsemi LV8413GP-TE-L-H is a highly integrated, compact H-bridge driver IC designed primarily for managing bipolar stepper motors or for driving two DC motors. Its combination of low on-resistance, high output current capability, and comprehensive protection features makes it an ideal solution for a wide range of portable and space-constrained applications, including office automation equipment, consumer electronics, and industrial instrumentation.
This guide provides a detailed overview of its key specifications, pin configuration, and a typical application circuit to facilitate design and implementation.
Datasheet Overview and Key Specifications
The LV8413GP-TE-L-H is built using a BiCDMOS process, which allows for high efficiency and robust performance. Key parameters from the datasheet include:
Output Configuration: Dual H-bridge, capable of driving one stepper motor or two independent DC motors.
Output Current: Capable of delivering a continuous output current of up to 1.5 A per channel (with proper heatsinking).
Low ON Resistance: The output MOSFETs feature a low typical RDS(ON) of 0.45 Ω (HS + LS, typ.), which minimizes power dissipation and heat generation, enhancing overall system efficiency.
Operating Voltage Range: A wide supply voltage (VM) range from 2.5 V to 16 V, supporting both 3.3V/5V and 12V systems.
Control Interface: Features a simple PHASE/ENABLE input logic control for each channel, making it easy to interface with microcontrollers (MCUs) for direction and enable/disable control.
Protection Circuits: Incorporates critical protection features such as thermal shutdown (TSD), under-voltage lockout (UVLO), and over-current protection (OCP), which safeguard the IC and the motor from fault conditions.
Package: Housed in a small, surface-mount TSSOP-16 package, suitable for space-constrained PCB designs.
Pinout Configuration
Understanding the pinout is crucial for correct PCB layout and connection. The LV8413GP-TE-L-H is provided in a 16-pin TSSOP package.
A simplified pin description is as follows:
Pin 1, 9 (VCC): Logic power supply input.
Pin 2, 10 (GND): Ground.
Pin 3, 4 (OUT1, OUT2): Output pins for Channel 1, connected to one motor coil.
Pin 5 (IN1): Control input for Channel 1 (PHASE or ENABLE, depending on mode).
Pin 6 (IN2): Control input for Channel 2.
Pin 7 (VREF): Current limit reference voltage input.
Pin 8 (VM): Motor power supply input.
Pin 11, 12 (OUT3, OUT4): Output pins for Channel 2, connected to the second motor coil.
Pin 13 (SGND): System ground.
Pin 14 (NC): No connection.
Pin 15, 16 (VREG): Internal regulator output (requires a capacitor to GND).
Typical Application Circuit Guide
A standard application circuit for driving a bipolar stepper motor is straightforward. The key components and connections are:
1. Power Supplies: Decouple both the logic supply (VCC, 3.3V/5V) and the motor supply (VM, up to 16V) with capacitors (e.g., 1µF and 100µF) placed as close as possible to the IC pins.
2. Control Inputs: The IN1 and IN2 pins are connected directly to the GPIO pins of an MCU. The logic levels on these pins determine the output state (forward, reverse, brake, or stop) of each H-bridge.
3. Current Sensing: The VREF pin is used to set the over-current protection threshold. A voltage divider from VCC or a DAC output from the MCU can be used to provide a reference voltage (e.g., 0.5V) to this pin.
4. Motor Connection: The two coils of the bipolar stepper motor are connected between OUT1-OUT2 and OUT3-OUT4, respectively.
5. Protection: The built-in protections are automatic. However, ensuring a good PCB layout with a solid ground plane and adequate trace width for motor currents is essential for reliable operation.
By following the datasheet recommendations for external component selection and PCB layout, designers can quickly implement a robust and efficient motor drive solution.
The onsemi LV8413GP-TE-L-H stands out as a highly reliable and efficient motor driver IC, offering a compelling blend of high output current, low power dissipation, and integrated protection in a minimal footprint. Its simplicity of control makes it an excellent choice for designers seeking to add precise motor control to portable and battery-operated devices without compromising on performance or board space.
Keywords:
1. H-bridge Driver IC
2. Stepper Motor Control
3. Low RDS(ON)
4. Phase/Enable Interface
5. Thermal Shutdown Protection
