MAX1778 Datasheet (Maxim) - Quad-Output TFT LCD DC/DC Converters

MAX1778, Quad-Output TFT LCD DC/DC Converters

The MAX1778/MAX1880 *MAX1885 multiple-output DC-DC converters provide the regulated voltages required by active matrix thin-film transistor (TFT) liquid crystal displays (LCD) in a low-profile TSSOP package.

One high-power step-up converter and two low-power charge pumps convert the 2.7V to 5

MAX1778 Features

* 500kHz/1MHz Current-Mode PWM Step-Up Regulator

* Up to +13V Main High-Power Output ±1% Accurate

* High Efficiency (91%)

* Dual Regulated Charge-Pump Outputs (MAX1778/ MAX1880

* MAX1882 only)

* Up to +40V Positive Charge-Pump Output

* Up to -4