AAT4900

AAT4900 Buffered Power Half-Bridge General Description The AAT4900 FastSwitchä is a member of AnalogicTech’s Application Specific Power MOSFETä (ASPMä) product family. It is a Buffered Power Half-Bridge, consisting of low onresistance Power MOSFETs with integrated control logic. This device operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V systems. The device is protected from shoot-through current with its own control circuitry. The AAT4900 is capable of very fast switching times and is ideal for use in high frequency DC to DC Converters. The quiescent supply current is a low 1mA (max) at 1MHz CLK frequency. In shutdown mode, the supply current decreases to 1µA max The AAT4900 is available in 5 pin SOT-23 specified over -40 to 85°C. Features = = = = = = FastSwitch TM 2.7V to 5.5V Input voltage range 120mΩ (typ) Switch RDS(ON) Low quiescent current = 1µA (max) DC = 1mA (max) at 1MHz Only 2.5V needed for Control Signal Input Temp range -40 to 85°C 5 pin SOT-23 package Applications = = High frequency DC/DC converters Low-side MOSFET gate driver Advanced Information Typical Applications DC/DC Converter Output Stage 2.7V to 5.5V Input 5 IN Control Circuit (PWM Output) 4 CLK EN AAT4900 SOT-23 GND 2 OUT 1 OUTPUT ENABLE 3 Advanced Analogic Technologies, Inc. 1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086 (408)524-9684 Fax (408)524-9689 8-1 4900.2000.9.0.71 AAT4900 Buffered Power Half-Bridge Absolute Maximum Ratings (TA...