LT3001ES5#TRPBF

Overview

The LT3001ES5#TRPBF is a micropower isolated flyback converter from Analog Devices, designed for applications requiring galvanic isolation without optocouplers. It operates with an input voltage range of 2.7 V to 42 V and delivers up to 1.2 A output current at 65 V. The device integrates a primary-side sensing mechanism that samples the isolated output voltage directly from the flyback waveform, eliminating the need for secondary-side feedback components. Key electrical parameters include a switching frequency of 10.6 kHz and a quiescent current of 350 uA. It functions within a temperature range of -40°C to +125°C TJ and is housed in a TSOT-23-5 package.

Feature Summary

• Eliminates optocouplers by sampling isolated output voltage directly from the primary-side flyback waveform
• Provides galvanic isolation in a compact TSOT-23-5 package suitable for space-constrained designs
• Operates as a micropower converter with low quiescent current consumption

Applications

• Isolated power supplies for industrial sensor interfaces
• Battery-powered devices requiring high isolation voltages
• Medical equipment needing secure galvanic separation

Procurement Notes

Verify the specific suffix (#TRPBF) indicates tape-and-reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc., as distributors may list similar part numbers. Check current availability status, as supply constraints may affect lead times. Ensure the operating temperature range meets your environmental requirements before finalizing procurement.

Selection Notes

Select this component when primary-side regulation is preferred to reduce bill-of-materials cost and board space. It is suitable for low-power isolated applications where high-frequency switching noise is not critical due to its 10.6 kHz frequency. Consider the 65 V maximum output capability against your load requirements. Verify that the input voltage range covers your system's minimum and maximum supply conditions.

Part Context

This part belongs to the LT3001 family of micropower isolated flyback converters. It shares the core primary-side sensing technology with other variants in the series but differs in package type and specific electrical ratings. The ES5 designation refers to the TSOT-23-5 package, distinguishing it from larger packages used in higher power versions.

Replacement Considerations

Direct substitutes must support primary-side regulation and similar isolation capabilities. Compare pinouts carefully, as package variations exist within the family. Verify that alternative parts meet the same input voltage and output current specifications. Check if the replacement supports the required switching frequency for your filter design.