LB11967V-MPB-E

Overview

The LB11967V-MPB-E 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 using external PNP-EMOS or PMOS-NMOS transistors. The device supports 12V, 24V, and 48V power supplies. Key electrical parameters include a minimum operating temperature of -30°C and a maximum of +95°C. The supply voltage range spans from 6V to 16V. Power dissipation is rated at 800 mW. The unit weight is 100 mg. It utilizes an SSOP-J-20 package for surface mount installation.

Feature Summary

• Single-phase full-wave pre-driver utilizing external PNP-EMOS or PMOS-NMOS transistors for high-efficiency low-consumption drive
• External PWM input enabling highly silent variable speed control via separately-excited upper direct PWM method
• Integrated current limiter circuit with chopper type current limit at start and reactive current cut circuit before phase change
• Lock protection and automatic reset functions incorporated with rotation speed detection and lock detection output

Applications

• Server cooling systems requiring large air volume and large current fan motors
• Consumer products utilizing variable speed fan motors
• Applications compatible with 12V, 24V, and 48V power supplies

Procurement Notes

Verify component authenticity through authorized onsemi distributors or official manufacturer channels. Confirm the specific suffix matches the required package and tape/reel specifications. Check RoHS compliance documentation for material composition details. Ensure storage conditions account for humidity sensitivity as indicated in the datasheet. Validate that the part number corresponds to the exact functional requirements of the design.

Selection Notes

Select this component when designing circuits for single-phase bipolar variable speed fan motors. It is suitable for applications requiring quiet operation and low power consumption. Consider the need for external power transistors to handle the motor load. Ensure the system supports the specified PWM frequency for optimal speed control. Verify that the operating temperature range meets the environmental constraints of the target application.

Part Context

The LB11967V belongs to the LB11967V series of motor controllers and drivers. It falls under the category of Fan / Motor Controllers / Drivers within onsemi's product lineup. This series is designed for efficient motor driving solutions, specifically targeting variable speed applications in consumer and server environments. The device integrates control logic with protection features to simplify the design of complex motor drive systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult onsemi technical support for potential alternatives or obsolescence management strategies.