LB11852FV-W-AH

Overview

The LB11852FV-W-AH is a single-phase pre-driver integrated circuit manufactured by onsemi. It is designed to drive external power switches for single-phase motor applications, specifically tailored for fan motors and similar loads. The device operates within a standard voltage range suitable for low-voltage automotive and industrial systems. It features an SC-55 package variant, identified as 20-LFSOP with a width of 4.40mm, providing a compact footprint for integration into space-constrained designs. The component functions as a gate driver stage, translating logic-level control signals into the necessary drive currents for external MOSFETs or IGBTs.

Feature Summary

• Single-phase pre-driver architecture optimized for direct interface with external switching elements
• Designed specifically for variable speed control applications in fan motor systems
• Compact surface-mount packaging facilitates high-density PCB layout

Applications

• Variable speed fan motor control systems
• Single-phase AC motor drive circuits
• Automotive HVAC blower motor controllers

Procurement Notes

Verify the specific suffix 'W-AH' against the official onsemi datasheet to confirm pinout compatibility and tape-and-reel specifications. Ensure the ordering part number matches the exact package type (20-LFSOP/SC-55) required for your PCB footprint. Cross-reference the manufacturer's latest revision history to confirm lead-free status and RoHS compliance before finalizing procurement orders.

Selection Notes

Select this component when a dedicated single-phase pre-driver is required for driving external power stages in fan or small motor applications. It is suitable for designs needing isolated or non-isolated gate drive capabilities without integrating the high-power output stage itself. Consider thermal management requirements for the external switches rather than the IC itself, as this device primarily handles signal conditioning and drive current delivery.

Part Context

This component belongs to onsemi's portfolio of motor control and driver solutions, specifically targeting single-phase AC and DC motor applications. It serves as a bridge between microcontroller logic outputs and high-power switching devices. The product line emphasizes reliability and ease of integration for consumer, industrial, and automotive thermal management systems where precise speed control is necessary.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult onsemi's official cross-reference tools or contact technical support directly for validated alternatives. Do not assume pin-to-pin compatibility with other models in the series without verifying the specific electrical characteristics and package dimensions.