Product Summary

The MAX1779EUE+T is a triple-output DC-DC converter. It 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 applications of the MAX1779EUE+T are TFT Active-Matrix LCD Displays, Passive-Matrix LCD Displays, PDAs, Digital-Still Cameras and Camcorders.

Parametrics

MAX1779EUE+T absolute maximum ratings: (1)IN, SHDN, TGND to GND: -0.3V to +6V; (2)DRVN to GND: -0.3V to (VSUPN + 0.3V); (3)DRVP to GND: -0.3V to (VSUPP + 0.3V); (4)PGND to GND: ±0.3V; (5)RDY to GND: -0.3V to +14V; (6)LX, SUPP, SUPN to PGND: -0.3V to +14V; (7)INTG, REF, FB, FBN, FBP to GND: -0.3V to (VIN + 0.3V); (8)Continuous Power Dissipation: 755mW; (9)Operating Temperature Range: -40 to +85℃; (10)Junction Temperature: +150℃; (11)Storage Temperature Range: -65 to +150℃; (12)Lead Temperature (soldering, 10s): +300℃.

Features

MAX1779EUE+T features: (1)Three Integrated DC-DC Converters; (2)250kHz Current-Mode PWM Boost Regulator, Up to +13V Main High-Power Output; ±1% Accuracy; High Efficiency (91%); (3)Dual Charge-Pump Outputs, Up to +40V Positive Charge-Pump Output; Down to -40V Negative Charge-Pump Output; (4)Internal Supply Sequencing; (5)Internal Power MOSFETs; (6)+2.7V to +5.5V Input Supply; (7)0.1μA Shutdown Current; (8)0.5mA Quiescent Current; (9)Internal Soft-Start; (10)Power-Ready Output; (11)Ultra-Small External Components; (12)Thin TSSOP Package (1.1mm max).

Diagrams

MAX1779EUE+T block diagram

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