AT1366B Datasheet | Aimtron Technology

Features - High efficiency (95%) possible - No Schottky Diode Required - 800m A Output Current at 5V input 3.3V output - Oscillation frequency 1.0MHz - Built-in ON/OFF Function - Built-in Short Circuit Protection - Low Dropout Operation: 100% Duty Cycle - Stand-by current max. 1µA - Input voltage: 2.5V ~5.5V Applications - Power Supply for portable devices General Description The AT1366B provides plete control for a DC/DC converter optimized for high-performance microprocessor applications. It 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 AT1366 is a family of low-noise synchronous step-down DC/DC converters that is ideally suited for systems powered from a 1-cell Li-ion battery or from a 3-cell to 4-cell Ni Cd, Ni MH, or alkaline battery. It can also be used to USB-Based power system. Block Diagram Aimtron reserves the right without notice to change this circuitry and specifications. 7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 : http://.aimtron..tw 1/18/2006 REV:1.2 Email:service@aimtron..tw 1 Preliminary Product Information 1MHz,800m A Synchronous Buck Converter Pin Configuration Ordering Information Part number AT1366BX AT1366BX_GRE Package SOT-25 SOT-25,Green Marking : Date Code : Date Code with one bottom line - For more marking information, contact our sales representative directly Pin Description Symbol Pin No. Descript RUN GND SW VIN FB 1 2 3 4 5 ON/OFF Control Power ground Switch Node Connection to Inductor Power Supply Output Feedback 7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 : http://.aimtron..tw 1/18/2006 REV:1.2 Email:service@aimtron..tw...