onsemi PMIC - AC DC Converters, Offline Switchers NCP1207PG

The NCP1207PG is a PWM current-mode controller designed for offline flyback applications, featuring quasi-resonant operation that minimizes switching losses. It incorporates a demagnetization detector for optimal conduction mode across varying load and line conditions. The controller supports burst mode operation to reduce audible noise during low power demand and includes an internal timer to limit the free-run frequency to 100 kHz, adhering to EMI regulations. Key features include a dynamic self-supply mechanism that eliminates the need for an auxiliary winding, making it suitable for applications with varying output voltage, such as battery chargers. The device also offers robust protection features, including auto-recovery overcurrent protection and latching overvoltage protection, ensuring reliable operation. The NCP1207PG is available in a Pb-free PDIP-8 package, making it a versatile choice for applications such as AC-DC adapters, offline battery chargers, and consumer electronics.