LT3751IUFD#PBF

Power Management - Specialized Overview

The LT3751IUFD#PBF is a high input voltage capable flyback controller designed to rapidly charge large capacitors to user-adjustable target voltages. It features an integrated rail-to-rail MOSFET gate driver for efficient operation down to 4.75V and a low 106mV differential current sense threshold. The device supports optional feedback pin usage for low noise high voltage regulation, with overvoltage and undervoltage lockouts.

Power Management - Specialized Feature Summary

• Integrated rail-to-rail MOSFET gate driver
• Low 106mV differential current sense threshold
• User-selectable overvoltage and undervoltage lockouts

Power Management - Specialized Applications

• Capacitor charging systems
• High voltage power supplies
• Automotive applications

Power Management - Specialized Procurement Notes

Verify the specific suffix IUFD against official Analog Devices documentation to confirm package type and temperature grade. Confirm RoHS compliance status via the manufacturer's datasheet or environmental declaration. Check for active part status as availability may vary by region.

Power Management - Specialized Selection Notes

Select this component for applications requiring rapid capacitor charging from high input voltages. Ensure the design accommodates the 5V to 24V input range and utilizes the adjustable output setting via transformer turns ratio and external resistors. Verify thermal management for the QFN EP package.

Power Management - Specialized Part Context

This part belongs to the LT3751 series of high voltage capacitor charger controllers. It is distinct from other LT37xx LED drivers by its focus on capacitor charging rather than constant current LED regulation. The family includes variants with different packaging and automotive qualifications.

Power Management - Specialized Replacement Considerations

LT3751EUFD#PBF

Power Management - Specialized FAQ

What is the minimum operating supply voltage?

The minimum operating supply voltage is 5V.

How is the target voltage set?

The target voltage is set by the transformer turns ratio and three external resistors.