LTC3803IS6-3#TRPBF

DC DC Switching Controllers Overview

The LTC3803IS6-3#TRPBF is a flyback DC/DC switching controller manufactured by Analog Devices Inc., designed for isolated power supply applications. It operates with a fixed switching frequency of 200 kHz and supports an input voltage range from 9.2 V to 75 V. The device provides a regulated output of 3 V with a maximum output current capability of 1 A. It utilizes current-mode control architecture within a TSOT-23-6 surface-mount package. The component functions across an extended temperature range of -40°C to +125°C junction temperature, featuring low quiescent current of 240 µA and integrated protection features including cycle-by-cycle current limiting and enable control.

DC DC Switching Controllers Feature Summary

• Implements constant frequency current-mode control for stable regulation in flyback topologies
• Provides galvanic isolation support for single positive output configurations
• Integrates hardware-based cycle-by-cycle current limiting for overcurrent protection
• Features low standby consumption through efficient shutdown mode operation

DC DC Switching Controllers Applications

• Isolated telecom DC/DC converters requiring wide input ranges
• Industrial power supplies utilizing flyback topology
• Point-of-load conversion systems with isolation requirements

DC DC Switching Controllers Procurement Notes

Verify the suffix TRPBF indicates tape and reel packaging configuration distinct from cut tape options. Confirm the IS6 designation corresponds to industrial temperature grade specifications. Ensure compatibility with TSOT-23-6 footprint dimensions during PCB layout verification. Cross-reference the specific -3 voltage variant against system requirements to ensure correct output regulation settings are met.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring a fixed 200 kHz switching frequency to simplify EMI filtering strategies. Consider the 75 V maximum input limit when designing for high-voltage bus architectures. Evaluate the 1 A output current capacity against peak load demands to determine if thermal management provisions are necessary. Verify that the TSOT-23-6 package size aligns with available board space constraints compared to larger alternative packages.

DC DC Switching Controllers Part Context

This part belongs to the LTC3803 family of flyback controllers from Analog Devices. It shares architectural similarities with variants like the LTC3803ES6-3 but differs in temperature rating and packaging format. The series is characterized by its ability to drive external MOSFETs directly without additional gate drivers, simplifying bill of materials for cost-sensitive isolated converter designs.

DC DC Switching Controllers Replacement Considerations

LTC3803IS6-3#TRMPBF offers identical electrical characteristics in cut-tape packaging.