LB1860-E

Overview

The LB1860-E is a two-phase half-wave variable speed fan motor driver manufactured by onsemi. It is designed for driving brushless DC (BLDC) motors and operates with an output current of 1.5 A. The device functions within an operating supply current of 50 mA and dissipates up to 1.1 W of power. It supports a temperature range from -30°C to +80°C and is available in a 10-PDIP package.

Feature Summary

• Integrated fully integrated driver and control function for two-phase half-wave operation
• Designed specifically for variable speed fan motor applications
• Supports brushless DC (BLDC) motor types

Applications

• Variable speed fan motor control systems
• Brushless DC (BLDC) motor drivers
• Two-phase half-wave motor drive circuits

Procurement Notes

Verify the specific suffix 'E' against the official onsemi datasheet to confirm it denotes the correct package variant or environmental compliance status. Ensure the design accommodates the 1.5 A output current limit and 1.1 W power dissipation requirements. Confirm the 10-PDIP package footprint matches the PCB layout specifications before procurement.

Selection Notes

Select this component when a dedicated solution for two-phase half-wave BLDC motor control is required. It integrates both driver and control logic, simplifying the circuit design compared to discrete solutions. Consider the -30°C to +80°C operating range for environmental suitability and verify that the 1.5 A output capability meets the motor's peak current demands without exceeding the 1.1 W thermal dissipation limits.

Part Context

The LB1860-E belongs to onsemi’s standard product portfolio, which provides reliable semiconductor solutions for industrial, automotive, and consumer electronics. This specific part falls under the Motor Control category, offering integrated driver and control functions for simple motor applications. It represents onsemi’s focus on providing cost-effective, high-reliability components for motion control needs.

Replacement Considerations

Check for direct pin-to-pin replacements in the same two-phase half-wave driver category. Verify compatibility with the 1.5 A output current and 10-PDIP package. Ensure the alternative component supports BLDC motor types and maintains similar operating temperature ranges (-30°C to +80°C). Consult onsemi documentation for any recommended upgrades within the EliteSiC or FS7 families if higher performance is needed.