MAX1664 - Maxim

MAX1664 Active-Matrix Liquid Crystal Display AMLCD Supply

The MAX1664 integrates power-supply and backplane drive circuitry for active-matrix thin-film-transistor (TFT) liquid crystal displays. Included are a single-output, pulsewidth-modulation boost converter (0.25 Ω switch), a dual-output (positive and negative) gate-driver supply using one inductor, an LCD backplane driver, and a simple phase-locked loop to syn.

Features

o Integrates All Active Circuitry for Three DC-DC Converters o Ultra-Small External Components (ceramic capacitors, 2µH to 5µH inductors) o DC-DC Converters Phase-Locked to Backplane Frequency for Lowest Noise o Low Operating Voltage (down to +2.8V) o Adjustable Output Voltage from VIN to +5.5V o Load Currents Up to 500mA o Adjustable TFT Gate Driver Output: Positive, VIN to +28V Negative, 0 to -10V (-20V with added components) o Includes 0.35Ω Backplane Driver o 1µA Shutdown Current o Power-Ready Output Signal MAX1664 _______________Ordering Information PART MAX1664CUP TEMP. RANGE 0°C to +7.