DESCRIPTION
The SC1103 is a versatile, low-cost, voltagemode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1103 with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive pchannel, high-side switch. The small device footprint allows for compact circuit design.

FEATURES
• Low cost / small size
• Switch mode efficiency (90%)
• 1% reference voltage accuracy
• Over current protection
• 500mA output drive
• 5V to 12V Input power source

APPLICATIONS
• Pentium® P55 Core Supply
• Low Cost Microprocessor Supplies
• Peripheral Card Supplies
• Industrial Power Supplies
• High Density DC/DC Conversion