LB1860M-W-AH

Overview

The LB1860M-W-AH is a two-phase half-wave variable speed fan motor driver manufactured by onsemi. It supports load voltages of 12V and 24V and is designed for brushless DC (BLDC) motors. The device operates within an ambient temperature range of -30°C to 80°C. It is housed in a SA31 package. This component functions as a dedicated motor driver for cooling applications.

Feature Summary

• Designed specifically for two-phase half-wave variable speed fan motor control
• Supports operation with 12V and 24V load voltage supplies
• Optimized for driving brushless DC (BLDC) motors

Applications

• Variable speed fan motor control systems
• Cooling solutions utilizing BLDC motors
• Two-phase half-wave motor drive circuits

Procurement Notes

Verify the current market status of the LB1860M-W-AH, as distributor records indicate it may be obsolete. Confirm availability through authorized channels or identify suitable replacement components if new production units are required. Ensure the specific suffix matches the intended package and configuration requirements for your design.

Selection Notes

Select this component when designing systems requiring a dedicated driver for two-phase half-wave BLDC fans. It is suitable for environments operating between -30°C and 80°C. Consider its compatibility with 12V and 24V power rails. Due to potential obsolescence, evaluate alternative drivers that support similar phase configurations and voltage ranges for long-term supply chain stability.

Part Context

The LB1860M series belongs to onsemi's portfolio of motor drivers and controllers. These devices are engineered for efficient management of small to medium-sized motors, particularly in thermal management applications. The W-AH suffix denotes specific packaging and handling characteristics within the broader LB1860 family.

Replacement Considerations

Check for direct substitutes from onsemi or other manufacturers offering two-phase BLDC driver capabilities. Verify pinout compatibility and voltage ratings. Since the part is marked obsolete, ensure any replacement maintains the same half-wave drive topology and thermal performance specifications.