The SF1565SGT is a switching controller Integrated Circuit (IC) manufactured by Sifirst. This device is a three-terminal, monolithic, step-down regulator which offers PWM (Pulse Width Modulated) control of an N-channel MOSFET power switch to create a buck converter. With its wide operating voltage range of 8V to 40V and high output current capability up to 5A, it is suited for use in a variety of applications. The device features programmable resistor and inductor current limit, programmable soft-start, thermal shutdown protection, output voltage tracking, current mode PWM operation with frequency jittering, and enable control function. It is available in an 8-pin very small outline package (SOP-8) and is RoHS compliant.