MIC2287-34YML-TR

LED Driver IC Overview

The MIC2287-34YML-TR is a high-efficiency, step-up (boost) DC-DC regulator designed for driving white LEDs. Manufactured by Microchip Technology, this device integrates an internal power switch and operates from a supply voltage range of 2.5V to 10V. It features a fixed switching frequency of 1.2MHz and supports both analog and PWM dimming methods. The component provides a maximum output current of 750mA in its switch configuration and includes a 34V overvoltage protection (OVP) clamp to safeguard connected LED strings. It is housed in an 8-pin MLF package measuring 2x2mm.

LED Driver IC Feature Summary

• Integrates an internal high-current power switch for compact design
• Provides 34V overvoltage protection to prevent LED string damage
• Supports flexible brightness control via analog and PWM dimming inputs
• Operates at a fixed 1.2MHz switching frequency for small external components

LED Driver IC Applications

• Mobile phone camera flash lighting
• Portable device backlighting systems
• White LED driver circuits in handheld electronics

LED Driver IC Procurement Notes

Verify the specific suffix '34YML' confirms the 34V OVP rating and MLF-8 package variant. Ensure compatibility with the required input voltage range of 2.5V to 10V. Confirm that the 750mA switch current capability meets the target LED load requirements. Check for RoHS compliance status if environmental regulations apply to the final assembly.

LED Driver IC Selection Notes

Select this part when a boost topology is required for single-cell battery operation. The 34V OVP makes it suitable for series-connected LED strings where transient spikes are a concern. Compare against other MIC2287 variants with different OVP ratings (e.g., 15V or 24V) based on the specific forward voltage of the LED array. Consider the 1.2MHz frequency for minimizing inductor size in space-constrained designs.

LED Driver IC Part Context

This component belongs to the MIC2287 family of white LED drivers from Microchip Technology, formerly Micrel. The family shares common architecture but varies primarily in the overvoltage protection threshold and package options. The MIC2287 series is widely used in portable consumer electronics requiring efficient, compact LED illumination solutions.

LED Driver IC Replacement Considerations

MIC2287-15YML-TR offers identical functionality with a 15V OVP rating. MIC2287-24YML-TR provides a 24V OVP threshold. MIC2289-34YML-TR is a similar device but typically rated for lower continuous output currents.