LTC3539 Datasheet (Linear Technology) - 1MHz/2MHz Synchronous Step-Up DC/DC Converters

LTC3539, 1MHz/2MHz Synchronous Step-Up DC/DC Converters

The LTC®3539/LTC3539-2 are synchronous, 2A step-up DC/DC converters with output disconnect.

Synchronous rectification enables high efficiency in the low profile 2mm × 3mm DFN package.

Battery life is extended with a 700mV start-up voltage and operation down to 500mV once started.

A switching frequen

LTC3539 Features

* n Delivers 3.3V at 900mA From 2 Alkaline/NiMH Cells n Delivers 5V at 900mA From a Lithium-Polymer Battery n VIN Start-Up Voltage: 700mV n 1.5V to 5.25V VOUT Range n Up to 94% Efficiency n VIN > VOUT Operation n ±1.5% Feedback Voltage Tolerance n 1MHz (LTC3539) or 2MHz (LTC3539-2) Fixed Frequency Ope