MAX1774 Description
The MAX1774 is a plete power-supply solution for PDAs and other hand-held devices. It integrates two high-efficiency step-down converters, a boost converter for backup battery regulation, and four voltage detectors in a small 32-pin QFN or 28-pin QSOP package. The MAX1774 accepts inputs from +2.7V to +28V and provides an adjustable main output from 1.25V to 5.5V at over 2A.
MAX1774 Key Features
- Dual, High-Efficiency, Synchronous-Rectified Step-Down Converters
- Thin, Small (1mm High) QFN Package
- Step-Up Converter for Backup Battery
- Main Power Adjustable from +1.25V to +5.5V Over 2A Load Current Up to 95% Efficiency
- Core Power Adjustable from 1V to 5V Internal Switches Up to 1.5A Load Current Up to 91% Efficiency
- Automatic Main Battery Switchover
- 100% (max) Duty Cycle
- Up to 1.25MHz Switching Frequency
- Input Voltage Range from +2.7V to +28V
- Four Low-Voltage Detectors