General Description
The MAX798 † high-performance, step-down DC-DC converter provides main CPU power in battery-powered systems. This buck controller achieves 96% efficiency by using synchronous rectification and Maxim’s proprietary Idle Mode™ control scheme to extend battery life at full-load (up to 10A) and no-load outputs.

FEATUREs
♦ 96% Efficiency
♦ 4.5V to 30V Input Range
♦ 1.6V to 6V Adjustable Precision Output
♦ ±0.4% Max Total Load-Regulation Error
♦ 0.06%/V Max Line-Regulation Error
♦ 5V Linear-Regulator Output
♦ Precision 2.505V Reference Output
♦ Automatic Bootstrap Circuit
♦ 150kHz/300kHz Fixed-Frequency PWM Operation
♦ Programmable Soft-Start
♦ 1.2mA Typical Quiescent Current
   (VIN = 12V, VOUT = 2.5V)
♦ 1µA Typical Shutdown Current

APPLICATIONs
   Notebook and Subnotebook Computers
   PDAs and Mobile Communicators