MAX1582ETC+

LED Driver IC Overview

The MAX1582ETC+ is a high-efficiency, step-up DC-DC converter designed for white LED backlighting in portable devices. It integrates a 30V low RDS(on) N-channel MOSFET switch and operates at a fixed 1MHz frequency to minimize external component size. The device supports driving up to six series-connected LEDs with constant current regulation. Key electrical specifications include an input voltage range of 2.6V to 5.5V, a typical shutdown current of 0.01µA, and an output voltage capability up to 25.5V. It features integrated overvoltage protection rated at 27V.

LED Driver IC Feature Summary

• Integrates a 30V N-channel power switch for efficient boost conversion
• Supports analog and PWM dimming for flexible brightness control
• Includes internal overvoltage protection circuitry eliminating external Zener diodes
• Features soft-start functionality to limit inrush current during startup

LED Driver IC Applications

• Backlight driver for main displays in cellular phones
• Backlight driver for secondary/sub-displays in handheld devices
• Constant current regulation for multiple series-connected white LEDs

LED Driver IC Procurement Notes

Verify the obsolete status of this component prior to procurement, as Analog Devices/Maxim Integrated has indicated it is no longer manufactured. Confirm availability through authorized distributors or surplus suppliers if production continuity is required. Ensure the TQFN-EP-12 package matches your PCB footprint requirements. Check RoHS compliance documentation for specific environmental standards relevant to your manufacturing region.

LED Driver IC Selection Notes

Select this part when designing for dual-display backlighting applications requiring independent control of main and sub-screens. It is suitable for systems needing high efficiency (up to 84%) and compact solution size due to the 1MHz switching frequency. Consider the 2.6V to 5.5V input range compatibility with single-cell lithium-ion batteries. Evaluate the need for analog versus digital PWM dimming interfaces based on the host controller capabilities.

LED Driver IC Part Context

The MAX1582ETC+ belongs to the MAX1582 family of LED drivers developed by Maxim Integrated, now part of Analog Devices. It was introduced around March 2003 to address the growing demand for efficient backlighting in mobile phones and PDA devices. The ETC suffix denotes the 12-pin Thin QFN package variant, distinguishing it from other package options like the UCSP. This component represents an early integration of power switches and control logic for portable display illumination.

LED Driver IC Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. As the product is marked obsolete, alternative solutions must be evaluated based on pin compatibility, electrical parameters, and application requirements. Consult Analog Devices official resources for current recommended replacements for legacy LED driver portfolios.