LB1876-MPB-E

Overview

The LB1876-MPB-E is a dedicated driver for polygon mirror motors, integrating speed control and driver circuitry on a single chip. It supports direct PWM drive to minimize power loss and features a built-in 5V regulator output. The device incorporates comprehensive protection mechanisms including current limiting, overheat protection, low-voltage protection, and restraint protection. It utilizes a PLL speed control circuit with a reference clock input and provides a phase lock detector output with masking functionality.

Feature Summary

• Integrates all necessary circuitry for polygon mirror motor applications, combining speed control and driver functions on a single chip.
• Supports direct PWM drive technique to enable efficient operation with low power loss.
• Incorporates built-in protection circuits such as current limiter, overheat protection, and low-voltage protection.
• Features a PLL speed control circuit with reference clock input and phase lock detector output.

Applications

• Polygon mirror motors in laser printers
• Similar equipment requiring precise polygon mirror motor control

Procurement Notes

Verify the exact suffix against official onsemi documentation to confirm package type and tape/reel specifications. Confirm end-of-life status and availability through authorized distributors. Ensure compatibility with existing polygon mirror motor designs regarding voltage levels and interface requirements before procurement.

Selection Notes

Select this component for applications specifically requiring integrated speed control and driving for polygon mirror motors. Consider its direct PWM capability for efficiency and built-in protections for system reliability. Evaluate the need for the integrated 5V regulator and PLL speed control features against alternative discrete solutions.

Part Context

The LB1876 belongs to onsemi's family of motor drivers designed for specialized applications like laser printing. It differs from general-purpose brushless DC drivers by focusing on polygon mirror motor characteristics, including specific protection schemes and speed control loops tailored for high-speed rotational stability.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other polygon mirror motor drivers if considering alternatives.