FP7208規(guī)格書資料

FP7208是一顆異步升壓LED驅(qū)動(dòng)IC，控制外部開關(guān)NMOS，反饋電壓默認(rèn)為0.104V，最大是0.204V，反饋電壓低，取樣電阻功率損耗也降低，整體轉(zhuǎn)換效率提升。 軟啟動(dòng)時(shí)間透過外部電容調(diào)整，LED開路保護(hù)透過外部電阻調(diào)整；調(diào)光控制EN Pin，EN內(nèi)部有濾波器，可以實(shí)現(xiàn)線性與數(shù)字調(diào)光，內(nèi)置過熱保護(hù)功能。

　　General Description The FP7208 and FP7208B are boost topology switching regulator for LED driver. They provide built-in gate driver pin for driving external N-MOSFET. The non-inverting input of error amplifier connects to a 0.1V default reference voltage. They have programmable soft start time set by external capacitors， and over voltage protection set by external resistors. FP7208B has programmable frequency set by external resistor. The LED current can be adjusted by applying an external signal to the EN pin. The EN pin accepts either a DC voltage or a PWM signal. The PWM signal filter components are contained within the chip. The FP7208B is available in the small footprint DFN-10L package to fit in space-saving PCB layout for application fields. Features : Wide Supply Voltage Operating Range： 2.5V to 24V : Precision Feedback Reference Voltage： 0.1V （±2%） : Analog and Digital Dimming Control : Shutdown Current： 《 6μA : Internal Fixed PWM Frequency： 200KHz / FP7208 : Programmable PWM Frequency： 100KHz~1000KHz / FP7208B : Programmable Soft Start Function （SS） : Programmable Over Voltage Protection （OVP） : Over Temperature Protection （OTP） : Package： SOP-8L（EP） / FP7208， DFN-10L / FP7208B Applications : LED Module : Display Backlight : Car Lighting : Portable LED Lighting