DESCRIPTION

The SC1633 is a high efficiency step up DC-DC converter. Only four external components are required to deliver a fixed voltage of 3V, 3.3V, or 5V. Efficiency beyond 83 can be easily achieved at 70mA load with 2.2V to 3V input voltages.

FEATURES

• High efficiency 87

• Power-saving shutdown mode (7µA typical)

• Internal 0.8A switch

• 120kHz switching rate

• Adjustable switch current limit

• On-chip low battery detector

APPLICATIONS

• Pocket organizers

• Electronic dictionaries

• Cameras

• Pagers

• Bar code scanners

• LCD displays

• Battery backup supplies

• Portable instruments