LB11961V-TLM-H

Overview

The LB11961V-TLM-H is a single-phase bipolar drive motor driver designed for direct PWM motor drive systems. It integrates 16V, 1.0A transistors and supports a supply voltage range of 4.5V to 16V. The device features a built-in variable speed function controlled by a thermistor input, enabling quiet, low-vibration operation. It includes regenerative diodes, lock protection with automatic recovery, and thermal shutdown circuits. Output configurations consist of two half-bridges, and it provides FG (speed detection) and RD (lock detection) outputs.

Feature Summary

• Single-phase full-wave drive capability with integrated high-side transistor direct PWM drive for efficient motor control.
• Built-in variable speed function regulated via external thermistor input for adaptive cooling performance.
• Integrated safety mechanisms including lock protection with automatic recovery and thermal shutdown circuitry.

Applications

• Fan motor drive in personal computer power supply systems
• CPU cooling fan systems
• General-purpose fan motor control

Procurement Notes

Verify the specific suffix TLM-H against official onsemi documentation to confirm tape and reel packaging specifications. Confirm that the component status remains active or identify valid obsolescence notices if applicable. Ensure compatibility with existing PCB footprints for the 14-HSSOP package before procurement. Cross-reference pin assignments with the latest datasheet revision to prevent integration errors during design-in.

Selection Notes

Select this component for applications requiring simple, cost-effective single-phase fan control with variable speed capabilities. It is suitable where thermistor-based temperature sensing is preferred for speed regulation. Consider the 1.0A output current limit and 16V maximum voltage when sizing for specific fan loads. The integrated lock detection and recovery features make it robust for continuous operation in critical cooling environments.

Part Context

The LB11961V series belongs to onsemi's portfolio of single-phase bipolar drive motor drivers. These devices are engineered to simplify fan motor control designs by integrating power stages and control logic. The family targets efficiency improvements in thermal management solutions for computing and consumer electronics, replacing discrete driver solutions with compact, fully integrated ICs.

Replacement Considerations

Consult official onsemi substitution guides for verified alternatives. Generic cross-references may not match the specific interface or protection features of the LB11961V-TLM-H.