MAX1561 Datasheet (Maxim) - High-Efficiency / 26V Step-Up Converters for Two to Six White LEDs

MAX1561, High-Efficiency / 26V Step-Up Converters for Two to Six White LEDs

The MAX1561/MAX1599 step-up converters drive up to six white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices.

The step-up converter topology allows series connection of the white LEDs so the LED currents are identical for uniform brightness.

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MAX1561 Features

* o Accurate Current Regulation for Uniform Illumination o High Efficiency Up to 87% o Flexible Analog or PWM Dimming Control o Up to 900mW Output Power with Internal 30V MOSFET Switch o Fast 1MHz (MAX1561) or 500kHz (MAX1599) PWM Operation o Small, Low-Profile External Components o 2.6V to 5.5V Input