LT3909EMSE#TRPBF

LED Driver IC Overview

The LT3909EMSE#TRPBF is a dual-string LED driver IC featuring a fixed 2MHz step-up DC/DC converter. It provides up to 60mA output current per channel with ±2% current matching accuracy. The device supports analog and PWM dimming control, operates within an input voltage range of 7V to 36V, and delivers up to 35V output voltage. It is housed in a 12-lead MSOP-EP package and rated for an operating junction temperature of -40°C to 125°C.

LED Driver IC Feature Summary

• Dual-channel architecture with integrated step-up DC/DC converter
• High precision current matching between output strings
• Supports both analog and pulse-width modulation dimming methods

LED Driver IC Applications

• LED lighting systems
• Display backlighting applications
• Indicator circuits

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the part number corresponds to the Automotive grade variant if required by the design specifications. Ensure compatibility with the intended PCB footprint for the 12-MSOP-EP package during procurement planning.

LED Driver IC Selection Notes

Select this component for designs requiring precise current regulation across two independent LED strings. The fixed 2MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the maximum input voltage limits relative to the power source availability.

LED Driver IC Part Context

This part belongs to the LT39xx series of LED drivers from Analog Devices. It is specifically designed for high-efficiency boost conversion topologies. The EMSE designation refers to the commercial temperature grade and MSOP-EP package type, distinguishing it from other variants in the family.

LED Driver IC Replacement Considerations

LT3909EMSE#PBF is a direct pin-compatible alternative available in tube packaging instead of tape-and-reel.