MAX1553ETA+T

LED Driver IC Overview

The MAX1553ETA+T is a high-efficiency, 40V step-up converter designed for driving two to ten white LEDs. It operates from an input voltage range of 2.7V to 5.5V and delivers a maximum output current of 480mA at up to 40V. The device features a fixed switching frequency of 250kHz and utilizes an internal switch. Packaged in an 8-TDFN (3x3) surface-mount case with an exposed pad, it supports operation across a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• High-efficiency boost topology optimized for multi-LED string applications
• Integrated power switch eliminates external component requirements
• Fixed 250kHz switching frequency enables compact passive design

LED Driver IC Applications

• Portable LED lighting systems
• Flashlight driver circuits
• Backlighting for portable electronic devices

LED Driver IC Procurement Notes

Verify the suffix '+T' indicates tape-and-reel packaging when sourcing. Confirm the 'MAX1553ETA' designation corresponds to the specific thermal and electrical grade required for your application. Ensure the supplier provides official Analog Devices documentation to validate authenticity and performance specifications against the datasheet.

LED Driver IC Selection Notes

Select this component when designing circuits requiring a single-cell lithium-ion or alkaline battery source to drive multiple series-connected white LEDs. The 40V output limit and 480mA current rating define the maximum LED string length and brightness. Consider the 250kHz frequency for balancing EMI and inductor size constraints.

LED Driver IC Part Context

This part belongs to Maxim Integrated's family of high-efficiency step-up converters tailored for LED illumination. It differs from general-purpose regulators by its specific optimization for constant-current LED driving characteristics and compatibility with low-voltage single-cell power sources common in handheld devices.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and control logic before considering alternative manufacturers.