DESCRIPTION

The SC1409 is a versatile, voltage-mode switching regulator designed for use in battery operated power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1409 with a minimum of external components. Internal MOSFETs and control circuitry minimize board space and design time. The small device footprint allows for compact circuit design.

FEATURES

• Internal MOSFETs

• Excellent efficiency >88

• 1 Voltage accuracy

• Built-in over current protection

• 1A Output current

• 5µA Standby current

• Industrial temperature range

• 300kHz/500kHz selectable frequency

APPLICATIONS

• Handheld equipment

• PDA power supplies

• Notebook I/O power supplies

• Peripheral card supplies

• High density DC/DC conversion