onsemi PMIC - PMIC - Power Supply Controllers, Monitors - NCP4303ADR2G NCP4303ADR2G

The NCP4303ADR2G is a secondary-side synchronous rectification controller designed for high-efficiency switch mode power supplies (SMPS). It supports various topologies, including flyback, forward, and half-bridge resonant LLC configurations. The device features adjustable minimum on and off times to mitigate ringing caused by PCB layout and parasitic elements, ensuring reliable operation. Key specifications include a turn-off delay time of approximately 40 ns, a peak current sink/source capability of 5 A/2.5 A, and an operating voltage range of up to 30 V. The controller also incorporates true secondary zero current detection with an adjustable threshold and an automatic parasitic inductance compensation system. It is suitable for applications requiring low startup and standby current consumption, with a maximum operating frequency of 500 kHz. The NCP4303ADR2G is packaged in an 8-pin SOIC format and is Pb-free, making it compliant with environmental regulations. Typical applications include notebook adapters, high power density AC/DC power supplies, and gaming consoles.