General Description

The AS1320 is a high-efficiency step-up DC-DC converter designed to generate a fixed voltage of +3.3V. The AS1320 achieves an efficiency of up to 90%. The minimum input voltage is 1.5V, the output voltage is fixed at 3.3V, and output current is up to 200mA (@ 2V).

Key Features

! Fixed Output Voltage: 3.3V

! Output Current: Up to 200mA (@ 2V)

! Internal Synchronous Rectifier

! Requires No External Schottky Diode or FETs

! Shutdown Mode Supply Current: Less Than 1µA

! Efficiency: Up to 90%

! Minimum Input Voltage: +1.5V

! Accurate Shutdown Low-Battery Cutoff Threshold

! Battery Input Connected to Pin OUT in Shutdown Mode for Backup Power

! 6-pin SOT23 Package

Applications

The AS1320 is ideal for low-power applications where ultra-small size is critical as in medical diagnostic equip ment, hand-held instruments, pagers, digital cameras, remote wireless transmitters, cordless phones, and PC cards.

The device is also perfect as a local 3.3V supply or as a battery backup.