AT1367B

www.DataSheet4U.com AT1367A/B/C/D Preliminary Product Information 1MHz, 800mA Synchronous Buck Converter With Power Good Detector & LDO Features General Description Operation Voltage 2.5V~6.0V The AT1367A/B/C/D provides complete Oscillation frequency 1MHz control for a DC/DC converter optimized for Output Current Maximum 800mA（DC-DC hight-performance microprocessor applications. It Converter） consists of a synchronous step-down DC/DC Built-In 400mA/LDO converter and a high-speed LDO regulator Power Good Indicator with Time Delay connected in series with the DC/DC converter Adjustable output. A power good detector and LDO ON/OFF Built-In Current Limit control is also built-in(metal option). DC/DC Built-In UVLO converter is operated on current mode architecture Built-In Thermal ShutDown for excellent line and load transient response. Built-In LDO ON/OFF Control（Metal Option） 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 AT1367A/B/C/D is a family of Applications low-noise synchronous step-down DC/DC Power Supply for Slim Type devices 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. Block Diagram VBG VBG Vref VREG UVLO VCC Current Sense 5 AGND + SLOPE + R S ...