DESCRIPTION
The LTC®3525-3/LTC3525-3.3/LTC3525-5 are high efficiency synchronous step-up DC/DC converters with output disconnect that can start up with an input as low as 0.85V. They offer a compact, high efficiency alternative to charge pumps in single cell or dual cell alkaline or Li-Ion applications. Only three small external components are required. The LTC3525 is offered in fixed output voltages of 3V, 3.3V or 5V.

FEATURES
■ Up to 95% Efficiency
■ Output Disconnect and Inrush Current Limit
■ Fixed Output Voltages of 3V, 3.3V or 5V
■ Delivers 65mA at 3V from a 1V Input
■ Delivers 60mA at 3.3V from a 1V Input,
■r 140mA at 3.3V from a 1.8V Input
■ Delivers 175mA at 5V from a 3V Input
■ Burst Mode® Operation: IQ = 7µA
■ Only Three External Components
■ VIN > VOUT Operation
■ <1µA Shutdown Current
■ Antiringing Control
■ Short-Circuit and Overtemperature Protection
■ Very Low Profile of 1mm
■ Tiny 6-Lead SC70 Package

APPLICATIONS
■ MP3 Players
■ Portable Instruments
■ Glucose Meters
■ Digital Cameras