The PAM2321 from Diodes Incorporated is a DC to DC Converter with Input Voltage 2.7 to 5.5 V, Output Voltage 1 1 to 3.3 V, Output Current 1 2000 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for PAM2321 can be seen below.