OnSemi公司的NCP3065是高達(dá)1.5A恒流開(kāi)關(guān)穩(wěn)壓器,輸入電壓從3.0V到40V,反饋電壓235mV,工作頻率可調(diào)整到高達(dá)250kHz,逐個(gè)周期限流,主要用在汽車(chē)照明,大功率LED驅(qū)動(dòng)器,恒流源已急低壓LED照明.本文介紹NCP3065主要特性,方框圖,典型降壓應(yīng)用電路,降壓演示板應(yīng)用電路和材料清單,升壓演示板應(yīng)用電路和材料清單,以及1-5WMR16LED驅(qū)動(dòng)GreenPoin解決方案框圖,應(yīng)用電路和材料清單.NCP3065,NCV3065:Upto1.5AConstantCurrentSwitchingRegulatorforL
OnSemi公司的NCP3065是高達(dá)1.5A恒流
開(kāi)關(guān)穩(wěn)壓器,輸入電壓從3.0V到
40V,反饋電壓
235mV,工作頻率可調(diào)整到高達(dá)
250kHz,逐個(gè)周期限流,主要用在汽車(chē)照明,大功率
LED驅(qū)動(dòng)器,恒流源已急低壓LED照明.本文介紹NCP3065主要特性, 方框圖, 典型降壓應(yīng)用電路, 降壓演示板應(yīng)用電路和材料清單, 升壓演示板應(yīng)用電路和材料清單,以及1-5W MR16 LED驅(qū)動(dòng)GreenPoin解決方案框圖,應(yīng)用電路和材料清單.
NCP3065, NCV3065: Up to 1.5 A Constant Current Switching
Regulator for LEDs The NCP3065 is a monolithic switching regulator designed to deliver constant current for powering
highbrightness LEDs. The device h
asa 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.
