AAT7358A Datasheet | Advanced Analog Technology

Advanced Analog Technology, Inc. August 2011 AAT7358/AAT7358A/AAT7358B/AAT7358C Product information presented is current as of publication date. Details are subject to change without notice. 1.8MHZ,1A,SYNCHRONOUS SWITCHING BUCK REGULATOR Features - Up to 95% Efficiency - 2.5V to 5.5V Input Voltage Range - 1.8MHz Switching Frequency - 25μA Ultra Low Sleep Mode Quiescent - <1μA Shutdown Current - Internal pensation Circuit - 500μs Soft Start Period - 160 C Built-in Thermal Shutdown Protection APPLICATIONS - Portable Navigation Device - Digital Photo Frame - Digital Still Camera - E-Book GENERAL DESCRIPTION The AAT7358/ AAT7358A/ AAT7358B/ AAT7358C device is a 1.8MHz, high efficiency, synchronous buck regulator incorporating both Light Load Mode and PWM mode operation. With an automatic Light Load Mode / PWM mode switching mechanism, the AAT7358/ AAT7358A/ AAT7358B/ AAT7358C device provides 80% efficiency under light load operation and up to 90% efficiency during heavy load condition. The featured input voltage range of AAT7358/ AAT7358A/ AAT7358B/ AAT7358C provides flexibility for different applications. The AAT7358/ AAT7358A/ AAT7358B/ AAT7358C is implemented in a 5-pin SOT23-5 /TSOT23-5 package. PIN CONFIGURATION 1 CNTRL FB 5 1 CNTRL OUT 5 2 GND 2 GND 3 SW VIN...