The UM3842DA is a high-performance, off-line current-mode PWM controller manufactured by Union Semiconductor. This device is specifically designed for power management applications, offering a cost-effective and efficient solution for various power supply designs. Operating at a fixed frequency of 500 kHz, the UM3842DA ensures stable and reliable performance. Its current-mode control architecture provides excellent line regulation and load regulation. The device is housed in a 16-Pin SOP package, making it easy to integrate into existing designs. Key features include low startup current, over-voltage protection, and over-current protection. Supreme Components International is an authorized distributor of Union Semiconductor, guaranteeing authentic components and comprehensive technical assistance. Consider the UM3842DA for your next power management project.