DESCRIPTION
The LTC®3526-2/LTC3526B-2 are synchronous, fi xed frequency step-up DC/DC converters with output disconnect. Synchronous rectification enables high efficiency in the low profile 2mm × 2mm DFN package. Battery life in single AA/AAA powered products is extended further with an 850mV start-up voltage and operation down to 500mV once started.

FEATURES
■ Delivers 3.3V at 100mA from a Single Alkaline/NiMH Cell or 3.3V at 200mA from Two Cells
■ VIN Start-Up Voltage: 850mV
■ VIN Operating Range: 0.5V to 5V
■ 1.6V to 5.25V VOUT Range
■ Up to 94% Effi ciency
■ Output Disconnect
■ 2MHz Fixed Frequency Operation
■ VIN > VOUT Operation
■ Integrated Soft-Start
■ Current Mode Control with Internal Compensation
■ Burst Mode® Operation with 9μA Quiescent Current (LTC3526-2)
■ Low Noise PWM Operation (LTC3526B-2)
■ Internal Synchronous Rectifi er
■ Logic Controlled Shutdown (IQ < 1μA)
■ Anti-Ringing Control
■ Low Profile (2mm × 2mm × 0.75mm) DFN-6 Package

APPLICATIONS
■ Medical Instruments
■ Flash-Based MP3 Players
■ Noise Canceling Headphones
■ Wireless Mice
■ Bluetooth Headsets