AS1337 - austriamicrosystems AG

AS1337 DC-DC Step-Up Converter

The AS1337 is a synchronous, fixed frequency, highefficiency DC-DC boost converter capable of supplying 3.3V @ 200mA from two AA Cells. Compact size and minimum external parts requirements make these devices perfect for modern portable devices. The AS1337 offers automatic powersave mode to increase efficiency at light loads. For input voltages higher than VO.

Features

! ! ! ! ! ! ! ! ! ! ! ! Input Voltage Range: 0.65V to 4.5V Low Start-Up Voltage: 0.85V Output Voltage Range: 2.5V to 5.0V Delivers 200mA @ 3.3V (from two AA Cell) up to 97% Efficiency High-Speed Fixed-Frequency: 1.2MHz Single-Cell Operation Internal PMOS Synchronous Rectifier Automatic Powersave Operation Anti-Ringing Control Minimizes EMI Logic Controlled Shutdown (< 1µA) TDFN (3x3mm) 8-pin Package 3 Applications The AS1337 is ideal for low-power applications where ultra-small size is critical as in medical diagnostic equipment, hand-held instruments, pagers, digital cameras, remote wireles.