LT3837IFE#TRPBF

Overview

The LT3837IFE#TRPBF is an isolated switching regulator controller designed for medium power flyback topologies, typically supporting applications from 10W to 60W. It features a synchronous rectifier architecture and operates with a fixed switching frequency of 100kHz. The device accepts a supply voltage range of 4.5V to 20V and supports a maximum duty cycle of 0.88. It is housed in a 16-TSSOP-EP package with exposed pad for thermal management. The controller provides transistor driver outputs and includes control characteristics such as enable, frequency control, and on-time control. It functions as a step-up/step-down converter capable of providing positive, isolated outputs.

Feature Summary

• Synchronous rectification capability for improved efficiency in flyback applications
• Integrated clock synchronization function for noise immunity and EMI reduction
• Supports both boost and buck operating modes within the flyback topology
• Wide operating junction temperature range suitable for industrial environments

Applications

• Medium power isolated DC-DC converters (10W to 60W)
• Industrial power supplies requiring galvanic isolation
• Telecommunications equipment power stages
• Medical device power systems

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the 16-TSSOP-EP package dimensions match the PCB footprint design. Ensure that the supplier documentation explicitly references the Analog Devices Inc. LT3837 datasheet for electrical parameter validation prior to integration into final designs.

Selection Notes

Select this component when designing flyback converters in the 10W to 60W range that require synchronous rectification to maximize efficiency. The fixed 100kHz frequency is suitable for balancing component size and efficiency. Consider the 16-TSSOP-EP package for its thermal performance capabilities. Ensure the input voltage range aligns with the 4.5V to 20V Vcc/Vdd specification for reliable operation across the intended load conditions.

Part Context

This part belongs to the LT3837 family of isolated switching regulator controllers manufactured by Analog Devices Inc. The family is optimized for flyback topologies, offering integrated features that simplify the design of isolated power supplies. The LT3837 series distinguishes itself through synchronous rectification support and clock synchronization, addressing common challenges in medium-power isolated conversion applications.

Replacement Considerations

LT3837EFE#PBF: Pin-compatible alternative available in tube packaging instead of tape and reel.