Features: `Delivers 3.3V at 200mA from a Single Alkaline/`NiMH Cell or 3.3V at 400mA from Two Cells`VIN Start-Up Voltage: 700mV`0.50V to 5.5V Input Range`1.6V to 5.25V VOUT Range`Up to 94% Effi ciency`Output Disconnect`2MHz Fixed Frequency Operation`VIN > VOUT Operation`Integrated Soft-Start`Cu...
LTC3528B-2: Features: `Delivers 3.3V at 200mA from a Single Alkaline/`NiMH Cell or 3.3V at 400mA from Two Cells`VIN Start-Up Voltage: 700mV`0.50V to 5.5V Input Range`1.6V to 5.25V VOUT Range`Up to 94% Effi cien...
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The LTC®3528B-2 is a synchronous, fi xed frequency step-up DC/DC converter with output disconnect. High effi ciency synchronous rectifi cation, in addition to a 700mV start-up voltage and operation down to 500mV once started, provides longer run-time for single or multiple cell battery-powered products.
A switching frequency of 2MHz minimizes solution footprint by allowing the use of tiny, low profi le inductors and ceramic capacitors. The current mode PWM is internally compensated, simplifying the design process. The LTC3528B-2 features continuous switching at light loads. Anti-ringing circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current, open-drain power good output, shortcircuit protection and thermal overload protection.
The LTC3528B-2 is offered in an 8-lead 2mm × 3mm × 0.75mm DFN package.