LT3909IMSE#PBF

LED Driver IC Overview

The LT3909IMSE#PBF is a dual-channel step-up LED driver from Analog Devices Inc., housed in a 12-MSOP-EP package. It operates at a switching frequency of 2MHz and supports analog and PWM dimming. The device delivers up to 50mA per channel with a maximum output voltage of 40V. It features ±2% current matching for precise control and includes compliance monitoring. The operating junction temperature range extends from -40°C to 125°C, ensuring reliability across industrial applications.

LED Driver IC Feature Summary

• Dual-channel step-up topology designed for driving multiple LED strings simultaneously
• High precision current regulation with ±2% matching accuracy between channels
• Integrated support for both analog and pulse-width modulation dimming methods

LED Driver IC Applications

• Industrial lighting systems requiring precise dual-string control
• Automotive interior illumination modules
• Portable device backlighting arrays

LED Driver IC Procurement Notes

Verify the specific suffix PBF indicates lead-free packaging compliant with RoHS standards. Confirm the MSOP-EP package variant matches the thermal pad requirements of the target PCB layout. Ensure the 2MHz switching frequency aligns with electromagnetic interference constraints in the final assembly design.

LED Driver IC Selection Notes

Select this component when dual independent LED channels are required within a compact footprint. The 2MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the 40V output limit and 50mA current capability against the specific load requirements of the application.

LED Driver IC Part Context

This part belongs to the LT3909 family of high-efficiency LED drivers. It shares architectural similarities with other members but is distinguished by its dual-channel configuration and specific pinout in the 12-lead MSOP package. It complements single-channel variants like the LT3908 for more complex lighting setups.

LED Driver IC Replacement Considerations

LT3909IMSE#TRPBF serves as the tape-and-reel equivalent for automated assembly processes. Verify that the functional specifications remain identical when substituting based on packaging preferences.