General Description
The RT9223 is a high efficiency synchronous switching regulator for modern CPU application. The output is controlled by a 5-bit DAC programmed from 1.3V to 2.05V in 0.05V steps and from 2.1V to 3.5V in 0.1V increments.

FEATUREs
• High Efficiency Synchronous N-MOSFET Driver Operating at 200KHz
• 1.3V ~ 2.05V (0.05V steps) and 2.1V ~ 3.5V (0.1V steps) Output Voltage
• Enable Input, PGOOD Output, OVP, and Current-limiting Protection
• Internal Digital-count Soft Start

APPLICATIONs
• Power Supply for Pentium ProTM, PowerPCTM, K6TM, 6x86TM, and AlphaTM Microprocessors
• High-power 5V to 3.xV DC-DC Regulators
• Low-voltage Distributed Power Supplies
• Programmable Step-down Power Supplies