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