19-2783; Rev 0; 4/03 High-Efficiency, 26V Step-Up Converter for White LED Main and Subdisplay Backlighting General Description The MAX1582 drives up to six white LEDs in series with a constant current to provide display backlighting for two (main and sub-) displays in cell phones and other hand-held devices.
This configuration eliminates the need for ballast resistors and expensive factory calibration.
The proprietary dual-output, step-up pulse-width modulation (PWM) converter includes a 30V, low RDSON N-channel MOSFET switch for high efficiency and maximum battery life.
The MAX1582 utilizes 1MHz current-mode PWM control to allow small input and output capacitors and a small inductor, while...

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