MAX1779 - Maxim

MAX1779 Low-Power Triple-Output TFT LCD DC-DC Converter

The MAX1779 triple-output DC-DC converter provides highly efficient regulated voltages required by small active matrix, thin-film transistor (TFT) liquid-crystal displays (LCDs). One high-power DC-DC converter and two low-power charge pumps convert the +2.7V to +5.5V input supply voltage into three independent output voltages. The primary high-power DC-DC co.

Features

o Three Integrated DC-DC Converters o 250kHz Current-Mode PWM Boost Regulator Up to +13V Main High-Power Output ±1% Accuracy High Efficiency (91%) o Dual Charge-Pump Outputs Up to +40V Positive Charge-Pump Output Down to -40V Negative Charge-Pump Output o Internal Supply Sequencing o Internal Power MOSFETs o +2.7V to +5.5V Input Supply o 0.1µA Shutdown Current o 0.5mA Quiescent Current o Internal Soft-Start o Power-Ready Output o Ultra-Small External Components o Thin TSSOP Package (1.1mm max) MAX1779 Ordering Information PART MAX1779EUE TEMP. RANGE -40°C to +85°C PIN-PACKAGE 16 TSSOP Pin C.