LT3837IFE#PBF

Overview

The LT3837IFE#PBF is an isolated switching regulator controller designed for medium power flyback topologies. It features a synchronous rectifier architecture and supports boost/buck functionality with positive, isolation-capable output configurations. The device operates within a supply voltage range of 4.5V to 20V and utilizes a 16-TSSOP-EP package. Key control characteristics include enable, frequency control, and on-time control capabilities.

Feature Summary

• Synchronous rectification technology for improved efficiency
• Integrated no-optocoupler feedback mechanism
• Supports clock synchronization for noise immunity
• On-time control for stable operation across wide input ranges

Applications

• Medium power flyback converters (10W to 60W)
• Isolated DC-DC conversion systems
• Industrial power supplies
• Telecommunications equipment

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging versus TRPBF for tape and reel. Confirm the manufacturer is Analog Devices Inc. Ensure the 16-TSSOP-EP package matches the design footprint. Check RoHS compliance status in the latest datasheet before finalizing procurement.

Selection Notes

Select this component for applications requiring isolated synchronous flyback control. Consider the 4.5V to 20V supply range and 100kHz fixed switching frequency. Evaluate thermal performance due to the exposed pad package. Ensure the design supports the required duty cycle and current handling capabilities.

Part Context

This part belongs to the LT3837 series from Analog Devices Inc., specialized for isolated synchronous flyback controllers. It is distinct from non-synchronous variants and offers integrated secondary side drive capabilities. The series targets medium-power applications where efficiency and component count reduction are priorities.

Replacement Considerations

LT3837EFE#PBF is a verified alternative within the same family offering similar functional specifications.