DESCRIPTION

The SC1631 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 87 can be easily achieved at 100mA load with 2.2V to 3V input voltages.

FEATURES

• High efficiency 90

• Power-saving shutdown mode (7µA typical)

• Internal 2A switch

• 120kHz switching rate

• Adjustable switch current limit

• On-chip low battery detector

APPLICATIONS

• Palmtop and notebook computers

• Pocket organizers

• Cameras

• Pagers

• Battery backup supplies

• Portable instruments