LB11651H-MPB-E

Overview

The LB11651H-MPB-E is a bipolar motor driver IC manufactured by onsemi, designed for precise control of bipolar stepper motors. It features a full bridge driver architecture supporting forward and reverse direction switching. The device operates with a supply voltage range of 3V to 5.25V and supports load voltages from 8V to 28V. It delivers an output current of 3A per channel. The component utilizes parallel and PWM interfaces for control signals. It is housed in a 36-pin HSOP package with an exposed pad (EP) for thermal management. The operating temperature range extends from -40°C to 125°C.

Feature Summary

• Full bridge driver configuration enabling bidirectional motor control
• Integrated thermal protection mechanisms for reliable operation
• Supports PWM input for efficient speed and torque regulation

Applications

• Bipolar stepper motor control systems
• Precision positioning applications
• Industrial automation equipment

Procurement Notes

Verify the specific suffix 'MPB-E' against the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications. Ensure the 36-pin HSOP EP package matches your PCB footprint requirements. Confirm RoHS compliance status if required for your assembly process. Check for any recent product change notices or obsolescence announcements directly from onsemi before finalizing procurement plans.

Selection Notes

Select this component when driving bipolar stepper motors requiring up to 3A output current within an 8V to 28V load voltage range. The 3V to 5.25V logic supply allows direct interfacing with standard microcontrollers. Consider the 36-pin HSOP EP package for its thermal performance in compact designs. Verify that the application requires bidirectional control and PWM modulation capabilities supported by this driver architecture.

Part Context

The LB11651 series includes variants such as the LB11651-E, which uses a different package format. The H-MPB-E variant specifically denotes the 36-pin HSOP package with an exposed pad, distinguishing it from other form factors in the family. This packaging choice facilitates better heat dissipation compared to smaller packages, making it suitable for higher power density applications involving continuous motor operation.

Replacement Considerations

Direct substitutes may include other onsemi bipolar drivers like the LB11651-E if package adaptation is feasible. Cross-reference pinouts carefully as package differences significantly impact interchangeability. Consult onsemi's official replacement guide for qualified alternatives that maintain identical electrical characteristics and functionality.