LT3491EDC#TRPBF

LED Driver IC Overview

The LT3491EDC#TRPBF is a fixed-frequency boost DC/DC converter designed to drive up to six series-connected white LEDs from a single lithium-ion cell. It operates within an input voltage range of 2.5V to 12V and delivers a typical supply current of 4000µA. The device supports output voltages up to 27V and functions at a switching frequency of 2.3MHz. It is housed in a compact 6-pin DFN EP package with dimensions of 2mm x 2mm and a maximum height of 0.75mm, suitable for surface mount applications across an extended temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Integrates an internal Schottky diode to minimize external component count and solution size
• Provides constant current regulation for driving multiple series-connected white LEDs
• Features low shutdown current to extend battery life in portable devices

LED Driver IC Applications

• Mobile phone backlighting systems
• Portable electronic device illumination
• Battery-powered LED lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing. Confirm that the ED subcode corresponds to the specified DFN EP package variant. Ensure compliance with RoHS directives and check for SVHC status prior to integration into final assemblies.

LED Driver IC Selection Notes

Select this component when designing circuits requiring high efficiency for driving multiple series LEDs from a single-cell lithium battery source. Consider the 2.3MHz switching frequency for optimizing passive component sizes. Evaluate thermal performance requirements given the small DFN footprint and intended operating conditions.

LED Driver IC Part Context

This part belongs to the LT3491 family of LED drivers manufactured by Analog Devices. It shares architectural similarities with other members like the LT3491ESC8 but differs in package type and pin configuration. The family targets mobile and portable applications requiring efficient white LED illumination from limited voltage sources.

LED Driver IC Replacement Considerations

LT3491ESC8#TRMPBF offers similar functionality in an SC-70-8 package. LT3491EDC#PBF provides the same electrical characteristics in a tube package instead of tape and reel.