DESCRIPTION
The LT®1613 is the industry’s first 5-lead SOT-23 current mode DC/DC converter. Intended for small, low power applications, it operates from an input voltage as low as 1.1V and switches at 1.4MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. Its small size and high switching frequency enables the complete DC/DC converter function to take up less than 0.2 square inches of PC board area. Multiple output power supplies can now use a separate regulator for each output voltage, replacing cumbersome quasi-regulated approaches using a single regulator and a custom transformer.

FEATURES
■ Uses Tiny Capacitors and Inductor
■ Internally Compensated
■ Fixed Frequency 1.4MHz Operation
■ Operates with VIN as Low as 1.1V
■ 3V at 30mA from a Single Cell
■ 5V at 200mA from 3.3V Input
■ 15V at 60mA from Four Alkaline Cells
■ High Output Voltage: Up to 34V
■ Low Shutdown Current: <1µA
■ Low VCESAT Switch: 300mV at 300mA
■ Tiny 5-Lead SOT-23 Package

APPLICATIONS
■ Digital Cameras
■ Pagers
■ Cordless Phones
■ Battery Backup
■ LCD Bias
■ Medical Diagnostic Equipment
■ Local 5V or 12V Supply
■ External Modems
■ PC Cards