LTC3526LB Datasheet | Linear Technology

Features n Delivers 3.3V at 100m A from a Single Alkaline/ Ni MH Cell or 3.3V at 200m A from Two Cells n VIN Start-Up Voltage: 680m V n 1.5V to 5.25V VOUT Range n Up to 94% Efficiency n Output Disconnect n 1MHz Fixed Frequency Operation n VIN > VOUT Operation n Integrated Soft-Start n Current Mode Control with Internal pensation n Burst Mode® Operation with 9µA IQ (LTC3526L) n Low Noise PWM Operation (LT3526LB) n Internal Synchronous Rectifier n Logic Controlled Shutdown (IQ < 1µA) n Anti-Ring Control n Low Profile (2mm × 2mm × 0.75mm) DFN-6 Package Applications n Medical Instruments n Noise Canceling Headphones n Wireless Mice n Bluetooth Headsets LTC3526L/LTC3526LB 550m A 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Description The LTC®3526L/LTC3526LB are synchronous, fixed 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 a 680m V start-up voltage and operation down to 500m V once started. A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current mode PWM design is internally pensated, reducing external parts count. The LTC3526L Features Burst Mode operation at light load conditions allowing it to maintain high efficiency over a wide range of load. The LTC3526LB Features fixed frequency operation for low noise applications. Anti-ring circuitry reduces EMI by damping the inductor in discontinuous mode. Additional Features include a low shutdown current of under 1µA and thermal shutdown. The LTC3526L/LTC3526LB are housed in a 2mm × 2mm × 0.75mm DFN package. L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks and Thin SOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical...