LB11988H-TLM-E

Overview

The LB11988H-TLM-E is a three-phase full-wave current linear drive motor driver IC designed for DC fan motors. It operates with a supply voltage range of 7V to 22V and supports load voltages from 5V to 22V. The device features a built-in current limiter and utilizes bipolar technology. It is housed in a 28-SOP package with an exposed pad and heat tabs, suitable for surface mount applications across a temperature range of -30°C to 85°C.

Feature Summary

• Three-phase full-wave current linear drive architecture
• Built-in current limiting protection
• Separates driver logic from power stage for external MOSFET optimization

Applications

• DC fan motor driving
• Brushless DC (BLDC) motor control
• Electromechanical systems requiring linear drive

Procurement Notes

Verify the specific ordering suffix TLM-E against official onsemi documentation to confirm tape-and-reel packaging and RoHS compliance status. Ensure the HSOP28HC package dimensions match the target PCB footprint requirements. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when a linear drive solution is required for three-phase fans within the 7V to 22V supply range. The design allows for external MOSFET selection based on specific voltage and current needs. Consider the thermal performance of the exposed pad package for high-current applications and verify compatibility with the system's control logic levels.

Part Context

This part belongs to the LB11988 series of motor drivers from onsemi. It is distinct from integrated bridge drivers by offering a separated driver and power stage architecture. This configuration provides flexibility in power stage sizing and allows designers to choose external MOSFETs optimized for their specific application voltage and current parameters.

Replacement Considerations

The LB11988V-TLM-E is a documented variant within the same product family. Verify pinout compatibility and electrical specifications before substitution. No other public substitute part numbers are confirmed for this specific model.