This part is a kind of semiconductor called SG3524N.

Function of this product has SMPS control circuit.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

Philips Semiconductors Product specification SMPS control circuit SG3524 DESCRIPTION This monolithic integrated circuit contains all the control circuitry for a regulating power supply inverter or switching regulator. Included in a 16-pin dual-in-line package is the voltage reference, error amplifier, oscillator, pulse-width modulator, pulse steering flip-flop, dual alternating output switches and current-limiting and shut-down circuitry. This device can be used for switching regulators of either polarity, transformer-coupled DC-to-DC converters, transformerless voltage doublers and polarity converters, as well as other power control applications. The SG3524 is designed for commercial applications of 0°C to +70°C. PIN CONFIGURATION D, F, N Packages INVERT INPUT 1 NON-INV INPUT 2 OSC [ ... ]

SG3524N PDF Datasheet Download