AAT4900 Buffered Power Half-Bridge General Description Features The AAT4900 FastSwitch is a member of AnalogicTech's Application Specific Power MOSFET (ASPM) 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 1A max *= *= *= *= *= *= FastSwitch TM 2.7V to 5.5V Input voltage range 120m (typ) Switch RDS(ON) Low quiescent current *= 1A (max) DC *= 1mA (max) at 1MHz Only 2.5V needed for Control Signal Input Temp range -40 to 85C 5 pin SOT-23 package *= *= High frequency DC/DC converters Low-side MOSFET gate driver The AAT4900 is available in 5 pin SOT-23 specified over -40 to 85C. Typical Applications DC/DC Converter Output Stage 2.7V to 5.5V Input 5 IN Control Circuit (PWM Output) ENABLE 4 3 CLK EN AAT4900 OUT 1 OUTPUT SOT-23 GND 2 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 Advanced Information Applications AAT4900 Buffered Power Half-Bridge Absolute Maximum Ratings (TA=25C unless otherwise noted) Symbol VIN Description IN to GND VEN, VCLK EN, CLK to GND VOUT OUT to GND IMAX TJ JA PD TLEAD Maximum Continuous Switch Current Operating Junction Temperature Range Maximum Thermal Resistance Maximum Power Dissipation Maximum Soldering Temperature (at Leads) Value Units -0.3 to 6 -0.3 to VIN+0.3 -0.3 to VIN+0.3 TBD -40 to 150 260 380 300 V V V A C C/W mW C Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time. Electrical Characteristics (VIN = 5V, TA = -40 to 85C unless otherwise noted. Typical values are at TA=25C) Symbol VIN Description Operation Voltage IQAC AC Quiescent Current IQDC DC Quiescent Current IQ(OFF) Off-Supply Current ISD(OFF) Off-Switch Current RDS(ON)H High Side MOSFET On Resistance RDS(ON)L Low Side MOSFET On Resistance VONL CLK, EN Input High Voltage ISINK CLK, EN Input leakage TBBM Break Before Make Time THIZ Min Typ 2.7 IN = 5V, EN = IN, CLK = 1MHz, IOUT = 0 IN = 5V, EN = IN, CLK = GND, IOUT = 0 EN = CLK = GND IN = OUT = 5.5V EN = GND, IN = 5.5V, VOUT=0, or OUT = IN IN = 4.5V IN = 3.0V IN = 4.5V IN = 3.0V 0.03 CLK to OUT delay EN to OUT HiZ delay Max Units 5.5 V 1 mA 1 A 1 A 15 A 120 140 120 140 CLK, EN Input low Voltage VONH TON-DLY Conditions 0.8 IN = 2.7V to 3.6V IN = 4.5V to 5.5V CLK, EN = 5.5v CLK rising CLK falling CLK rising CLK falling CLK = GND CLK = IN 2.0 2.4 0.01 5 5 60 80 75 75 1 m m m m V V V A ns ns ns ns ns ns Advanced Analogic Technologies, Inc. 1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086 (408)524-9684 Fax (408)524-9689 8-2 4900.2000.9.0.71 AAT4900 Buffered Power Half-Bridge Functional Block Diagram IN CLK Control Logic and Shoot-through Protection OUT EN GND Ordering Information Package SOT-23-5 Marking Part Number Bulk N/A Tape and Reel AAT4900IGV-T1 Advanced Analogic Technologies, Inc. 1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086 (408)524-9684 Fax (408)524-9689 8-3 4900.2000.9.0.71 AAT4900 Buffered Power Half-Bridge This page intentionally left blank Advanced Analogic Technologies, Inc. 1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086 (408)524-9684 Fax (408)524-9689 8-4 4900.2000.9.0.71