The **MP1484** is an 8 pin IC which converts the DC voltage to DC voltage using pulse. The ic has an inbuilt mosfet which provides the load current up-to 3 Ampere The input voltage range of **4.75 v to 18V DC**. The output current will be 1.8 ampere and the maximum output we will get around **3A**.

The input resistance of the mosfet is about 85 m ohms. The maximum efficiency of 95%.

The output voltage of the circuit is designed using the voltage feedback. A voltage divider circuit is connected to the pinout of SW and it goes to the pin FB.

The output voltage is calculated using this formula

`V out = 0.925 * R1+R2/R2`

The R2 value must be 10K. This value is suggested by the IC manufacturing company. So we can calculate the R1 using this formula.

`R1 = 10.81*(Vout -0.0925)`