NCP3065 是一款单片开关稳压器，旨在为高亮度 LED (HBLED) 供电提供恒定电流。该器件具有 235 mV（标称值）的超低反馈电压，可用于调节 LED 灯串的平均电流。此外，NCP3065 具有高达 40 V 的宽输入电压，使其能够使用常用于照明应用的 12 Vac 或 12 Vdc 电源以及铅酸电池等非稳压电源工作。该器件可以配置为控制器拓扑，并添加外部晶体管，以支持高于内部晶体管 1.5 A 额定开关电流的更高 LED 电流。NCP3065 开关稳压器可以配置为降压（Buck）和升压（boost）拓扑，外部元件数量最少。

The NCP3065 is a monolithic switching regulator designed to deliver constant current for powering high brightness LEDs (HBLED). The device has a very low feedback voltage of 235 mV (nominal) which is used to regulate the average current of the LED string. In addition, the NCP3065 has a wide input voltage up to 40 V to allow it to operate from 12 Vac or 12 Vdc supplies commonly used for lighting applications as well as unregulated supplies such as Lead Acid batteries. The device can be configured in a controller topology with the addition of an external transistor to support higher LED currents beyond the 1.5 A rated switch current of the internal transistor. The NCP3065 switching regulator can be configured in Step-Down (Buck) and Step-Up (boost) topologies with a minimum number of external components.