Rochester Electronics PMIC - AC DC Converters, Offline Switchers NCP1200P60

The NCP1200P60 is a PWM current-mode controller designed for low-power universal offline supplies, available in SOIC,àí8 or PDIP,àí8 packages. It enables the creation of compact switch-mode power supplies with minimal external components, making it suitable for applications such as AC-DC adapters and offline battery chargers. The device operates at a fixed frequency of 60 kHz and features current-mode control with skip-cycle capability, which enhances efficiency at light loads by reducing acoustic noise. Key features include integrated output short-circuit protection, no auxiliary winding operation, and a peak current source/sink capability of 250 mA. The controller is self-supplied from the DC rail, ensuring functionality even under low output voltage or short-circuit conditions. Additionally, it incorporates built-in frequency jittering to lower electromagnetic interference (EMI) and has internal temperature shutdown for added reliability. The NCP1200P60 is RoHS compliant and is designed to meet the needs of low-cost power supply solutions.