MAX1778 Description
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 5.5V input voltage into three independent output voltages. A built-in linear regulator and V buffer plete the power-supply...
MAX1778 Key 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 -40V Negative Charge-Pump Output
- Low-Dropout 40mA Linear Regulator (MAX1778/ MAX1881/MAX1883/MAX1884 only)
- Up to +15V LDO Input
- Optional Higher Current with External Transistor
- 2.7V to 5.5V Input Supply