DESCRIPTION
The LTC®1771 is a high efficiency current mode stepdown DC/DC controller that draws as little as 10µA DC supply current to regulate the output at no load while maintaining high efficiency for loads up to several amps.

FEATURES
■ Very Low Standby Current: 10µA
■ Available in Space-Saving 8-Lead MSOP Package
■ High Output Currents
■ Wide VIN Range: 2.8V to 20V Operation
■ VOUT Range: 1.23V to 18V
■ High Efficiency: Over 93% Possible
■ ±2% Output Accuracy
■ Very Low Dropout Operation: 100% Duty Cycle
■ Current Mode Operation for Excellent Line and Load Transient Response
■ Defeatable Burst ModeTM Operation
■ Short-Circuit Protected
■ Optional Programmable Soft-Start
■ Micropower Shutdown: IQ = 2µA

APPLICATIONS
■ Cellular Telephones and Wireless Modems
■ 1- to 4-Cell Lithium-Ion-Powered Applications
■ Portable Instruments
■ Battery-Powered Equipment
■ Battery Chargers
■ Scanners