GENERAL DESCRIPTION
n Typical Application Current mode operation provides fast transient response and eases of loop stabilization. In shutdown mode, the regulator reduces the current less than 1µA of supply current. V IN 5V CIN 10µF P.G C2 Optional IN SW R4 100KΩ AME5286 PGOOD EN OFF ON FB SS COMP FREQ C1 680pF GND R3 25KΩ RFREQ 18KΩ L 2.2µH R1 75KΩ C3 0.1µF VOUT 3.3V COUT 22µF R2 24KΩ This device is available in SOP-8/PP and DFN-8C package with exposed pad for low thermal resistance. n FEATURES
l 3A Output Current l External Soft Start l Stable with Low ESR Output Ceramic Capacitors l Up to 95% Efficiency l Less than 1µA Shutdown Current l Wide Switching Frequency Range from 300KHz~2MHz l Thermal Shutdown l Cycle by Cycle Over Current Protection l Output Adjustable from 0.8V to VIN l Short Circuit Protection l Available in SOP-8, DFN-8C Package l RoHS Compliant and Halogen Free Figure 1. 3.3V at 3A Step-Down Regulators L VIN 1.5µH 5V IN SW CIN 10µF R4 100KΩ AME5286 PGOOD FB EN P.G OFF ON SS COMP FREQ C2 Optional C1 680pF GND R3 8.2KΩ RFREQ 18KΩ R1 6KΩ C3 0.1µF VOUT 1V COUT 22µF R2 24KΩ Figure 2.
AME
