LT3909HMSE#TRPBF

LED Driver IC Overview

The LT3909HMSE#TRPBF is a dual-output DC-DC step-up (boost) regulator IC manufactured by Analog Devices Inc. It features two independent channels capable of delivering up to 50mA per output. The device utilizes analog and PWM dimming control methods for precise regulation. It operates within a 12-lead MSOP package with an exposed pad, designed for surface-mount applications.

LED Driver IC Feature Summary

• Dual independent boost converter outputs
• Supports analog and PWM dimming control
• Integrated synchronous rectification

LED Driver IC Applications

• LED lighting systems requiring dual-channel drive
• Portable devices with multiple LED indicators
• Automotive interior lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the HMSE variant matches the required thermal performance and pinout compatibility for your PCB layout. Ensure the design supports the necessary input voltage range for the intended boost application.

LED Driver IC Selection Notes

Select this component when dual isolated or non-isolated boost outputs are needed from a single controller. Consider the 50mA current limit per channel against load requirements. Evaluate the 12-MSOP-EP package for thermal dissipation needs in compact designs.

LED Driver IC Part Context

This part belongs to the LT3909 family of high-efficiency boost regulators. It is distinct from buck converters like the LT3990 series. The device integrates power switches and control logic into a small footprint, simplifying design for low-power LED applications.

LED Driver IC Replacement Considerations

Check for direct pin-compatible alternatives within the LT39xx series. Verify if other dual-output boost controllers meet the specific current and dimming requirements. Cross-reference package dimensions for mechanical fit.