LB11967V-MPB-H

Overview

The LB11967V-MPB-H is a single-phase bipolar variable speed fan motor pre-driver manufactured by onsemi. It operates with an external PWM signal to drive large-scale fan motors in servers and consumer products. The device supports 12V, 24V, and 48V power supplies. Key electrical parameters include a minimum operating voltage of 6 V and a maximum operating voltage of 16 V. The typical operating supply current is 14 mA. Power dissipation is rated at 800 mW. The component functions within a temperature range of -30°C to +95°C. It utilizes a SSOP-J-20 surface-mount package.

Feature Summary

• Single-phase full-wave pre-driver utilizing PNP-EMOS external transistors for high-efficiency low-consumption drive
• External PWM input enabling highly silent variable speed control via separately-excited upper direct PWM method
• Integrated chopper-type current limiter at start and reactive current cut circuit for silent operation
• Includes minimum speed setting pin, Hall bias constant-voltage output, lock protection, and automatic reset functions

Applications

• Variable speed fan motors in server systems
• Fan motors in consumer electronic products
• Applications requiring large air volume and large current drive capabilities

Procurement Notes

Verify the specific suffix MPB against official onsemi documentation to confirm tape-and-reel packaging specifications and moisture sensitivity level (MSL) ratings. Confirm RoHS compliance status and halide-free material composition requirements prior to integration. Ensure design compatibility with the SSOP-J-20 package outline and thermal dissipation limits of 800 mW. Validate that the 6 V to 16 V operating voltage range aligns with the target system's power supply architecture.

Selection Notes

Select this component for designs requiring efficient single-phase bipolar fan motor control with minimal external components. The integrated current limiting and reactive current cut features reduce electromagnetic interference and acoustic noise. The device supports multiple voltage standards including 12V, 24V, and 48V systems. Consider the SSOP-J-20 package constraints for PCB layout and ensure adequate thermal management for the specified power dissipation rating.

Part Context

The LB11967V series belongs to onsemi's portfolio of motor and motion controllers, specifically categorized under PMIC power management ICs. This family targets variable speed applications where quiet operation and energy efficiency are critical. The LB11967V acts as a pre-driver stage, managing gate signals for external power transistors rather than driving the load directly. This architecture allows flexibility in selecting external transistors based on current requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.