Global Mixed-mode Technology Inc. AT1362A/B/C Synchronous Buck Converter With Power Good Detector & LDO General Description Features The AT1362A/B/C provides complete control for a DC/DC converter optimized for hight-performance microprocessor applications. It consists of a synchronous step-down DC/DC converter and a high-speed LDO regulator connected in series with the DC/DC converter output. A power good detector and LDO ON/OFF control is also built-in(metal option). DC/DC converter is operated on current mode architecture for excellent line and load transient response. 1MHz operation frequency is allowing the use of small surface mount inductor and capacitor. The internal synchronous switch increases efficiency and eliminates the need for an external schottky diode. The AT1362A/B/C is a family of low-noise synchronous step-down DC/DC converters that is ideally suited for systems powered form a 1-cell Li-ion battery or from a 3-cell to 4-cell NiCd, NiMH, or alkaline battery. It can also be used to USB-based power system. Operation Voltage 2.5V~6.0V Oscillation frequency 1MHz Output Current Maximum 400mA（DC-DC Converter） Built-In 400mA/LDO Power Good Indicator with Time Delay Adjustable Built-In Current Limit Built-In UVLO Built-In Thermal ShutDown Applications Power Supply for Slim Type devices Ordering Information Part Number Package 1362 N TDFN3X3-10,Green Marking A:AT1362AN B:AT1362BN C:AT1362CN ： Date Code *For more marking information, contact our sales representative directly ： Pin Assignment 1 10 2 9 3 AT1362 8 4 7 5 6 AT1362A AT1362B AT1362C DC/DC 2.5V LDO 3.3V DC/DC 1.8V LDO 3.3V DC/DC 1.2V LDO 3.3V TDFN3X3-10 (TOP VIEW) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.0 May 22, 2008 1