MIC2289-24YML-TR

LED Driver IC Overview

The MIC2289-24YML-TR is a PWM boost switching regulator optimized for constant-current white LED driver applications. It features an internal Schottky diode and three levels of output overvoltage protection, enabling a compact DC/DC solution with only four external components. The device operates on a 2.5V to 10V DC input, delivering up to 750mA switch current at a 1.2MHz frequency. It supports analog and PWM dimming, functions within -40°C to 125°C junction temperature, and is housed in an 8-MLF (2x2) package.

LED Driver IC Feature Summary

• Integrates an internal Schottky diode to minimize external component count
• Provides three levels of output overvoltage protection for enhanced safety
• Supports both analog and pulse width modulation dimming operations

LED Driver IC Applications

• White LED backlighting systems
• Camera flash drivers
• General illumination LED circuits

LED Driver IC Procurement Notes

Verify the specific suffix YML-TR corresponds to the 8-MLF tape-and-reel packaging configuration. Confirm that the 24V designation aligns with the required output voltage headroom for the target LED string. Ensure compatibility with the 2.5V to 10V input range and check for RoHS3 compliance requirements before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when a small footprint is critical due to its integration of the Schottky diode and minimal external part requirement. Choose the MIC2289-24YML-TR variant specifically if the application demands a maximum output voltage rating of 24V. Consider the 750mA current capability and 1.2MHz switching frequency for efficiency and thermal management needs in portable devices.

LED Driver IC Part Context

This part belongs to the MIC2289 family of LED drivers from Microchip Technology, formerly Micrel. The series includes variants like MIC2289-15 and MIC2289-34, differentiated primarily by their maximum output voltage ratings. The MIC2289-24YML-TR serves as a mid-range option within this portfolio, balancing voltage headroom with compact design constraints for mobile electronics.

LED Driver IC Replacement Considerations

MIC2289-15YML-TR offers similar functionality with a lower 15V output rating. MIC2289-34YML-TR provides higher voltage tolerance up to 34V. Verify that the alternative variant's voltage rating sufficiently exceeds the LED string forward voltage plus overhead.