LT8311EFE#PBF

Power Supply Controllers, Monitors Overview

The LT8311EFE#PBF is a synchronous rectifier controller with an integrated opto-coupler driver designed for the secondary side of forward converters. It operates within a supply voltage range of 3.7V to 30V and draws a typical supply current of 4.5 mA. The device supports switching frequencies up to 300 kHz and functions reliably across an operating temperature range of -40°C to 150°C. Housed in a 20-TSSOP package with an exposed pad, it eliminates the need for pulse transformers through its preactive mode operation.

Power Supply Controllers, Monitors Feature Summary

• Integrated opto-coupler driver for secondary-side control
• Eliminates requirement for pulse transformers via preactive mode
• Wide input supply voltage capability from 3.7V to 30V

Power Supply Controllers, Monitors Applications

• Secondary side synchronous rectification in forward converters
• Output voltage feedback regulation via opto-coupler
• High-efficiency AC/DC power conversion systems

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix PBF indicates lead-free compliance when sourcing. Confirm the 20-TSSOP package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Power Supply Controllers, Monitors Selection Notes

Select this component for forward converter topologies requiring precise synchronous rectification without additional isolation components. Evaluate the 300 kHz switching frequency limit against your transformer design. Consider the 4.5 mA supply current impact on overall system efficiency. Verify compatibility with your opto-coupler selection for optimal drive performance.

Power Supply Controllers, Monitors Part Context

This part belongs to the LT8311 family of synchronous rectifier controllers manufactured by Analog Devices. It is specifically engineered to replace traditional diode rectifiers in high-efficiency power supplies. The device integrates control logic and driver stages to manage external MOSFETs directly.

Power Supply Controllers, Monitors Replacement Considerations

LT8311EFE#TRPBF is a tape-and-reel variant of the same functional device.