DESCRIPTION

The SC1401 is a synchronous buck regulator designed to power the latest generation microprocessors in battery operated systems. The SC1401 may be used to provide both the I/O and core voltages utilizing synchronous rectification for the core supply voltage and an LDO N-Channel MOSFET controller for the I/O supply voltage. A 1.25 volt reference allows lower output voltages required by today’s portable microprocessors.

FEATURES

• >90 Efficiency (SMPS)

• 6.0V to 30V Input range

• 1.25V to 5.5V Adjustable output (SMPS)

• PWM and LDO regulator outputs

• High output gate drive of 2 Amps (SMPS)

• Power save mode for light load operation

• 200kHz/300kHz fixed-frequency PWM operation

• 2mA Typical quiescent current

• 2µA Typical shutdown current

APPLICATIONS

• Notebook and palmtop computers

• LCD monitors

• Internet appliances