This is one of the semiconductor types. This part name is LM2596HV.
This product has 3A Step-Down Voltage Regulator functions.
Manufacturers of product is H&Msemi.
Image and pinout :
LM2596HV PDF Datasheet
Some of the text files within the PDF file
LM2596HV 3A Step-Down Voltage Regulator LM2596HV DESCRIPITION The /0+9 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an ADJ output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The /0+9 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the /0+9 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on output [ … ]
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