MAX1553ETA-T

LED Driver IC Overview

The MAX1553ETA-T is a high-efficiency, step-up DC-DC converter designed for driving 2 to 10 white LEDs. It operates from an input voltage range of 2.7V to 5.5V and provides a regulated output capable of up to 40V at 480mA. The device integrates a power switch and operates at a fixed switching frequency of 250kHz. Packaged in an 8-pin TDFN (3x3mm) with an exposed pad, it supports surface-mount assembly. The component functions within an ambient temperature range of -40°C to +85°C, ensuring reliable performance in portable applications requiring compact LED illumination solutions.

LED Driver IC Feature Summary

• Integrates a high-efficiency boost converter topology optimized for multi-LED string drive
• Provides constant current regulation for stable LED brightness across varying input conditions
• Features a compact 8-pin TDFN package with exposed thermal pad for efficient heat dissipation

LED Driver IC Applications

• Portable electronic devices requiring white LED backlighting
• Handheld instruments utilizing multiple white LEDs for illumination
• Battery-powered consumer electronics needing compact power management

LED Driver IC Procurement Notes

Verify the specific suffix designation, as the MAX1553ETA+T indicates lead-free compliance while other variants may differ. Confirm the exact package marking and date code against the manufacturer's latest documentation to ensure authenticity. Check for any regional restrictions or RoHS compliance updates that may affect procurement eligibility for this obsolete or active status part.

LED Driver IC Selection Notes

Select this component when designing circuits that require driving multiple series-connected white LEDs from a single-cell lithium-ion or alkaline battery source. Ensure the application demands a fixed 250kHz switching frequency and fits within the 2.7V to 5.5V input window. Consider the thermal requirements of the TDFN package if operating near maximum current limits in enclosed spaces.

LED Driver IC Part Context

This part belongs to Maxim Integrated's family of high-efficiency step-up converters tailored for LED lighting applications. It complements other drivers by offering a balance of output voltage capability and current regulation suitable for medium-density LED arrays. The TDFN packaging aligns with industry trends toward miniaturization in mobile and handheld device designs.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts and control logic before considering alternative components from the same manufacturer or third-party suppliers.