Low Power Lighting LED Driver Data sheet NT503 19mA Constant Current Regulator Features Applications LED strip General LED lighting LCD back lighting LED torch / flashlight The most easy used linear constant current LED driver Do not need to take VDD power 19mA constant current regulator 1.6V ~ 15V wide working voltage range 1uS current rising time, support power supply PWM dimming function Less than 1%/V line/load regulation 125°C ~160°C junction temperature current ramp down Package Type PLCC 3014 thermal protect ~ 85 operating temperature -40 ℃ ℃ Green package Block Diagram and Ideal IV characteristic IV curve Maximum Ratings (T = 25°°C) Characteristic Symbol Rating Unit Supply voltage VPN -0.2 ~ 16 V Reverse voltage VR 0.5 V Power Dissipation (Ta=25°C) PD 0.3 W Operating temperature TOPR -40~+85 °C Storage temperature TSTG -55~+85 °C -1Please visit http://www.cxltech.cn for more patent information. Tel 0755-86091963 Fax:0755-82725693 ： Ver. 01 NT503 Electrical Characteristics and Recommended Operating Conditions Characteristic Symbol Condition Min. Typ. Max. Unit Minimum dropout voltage VPNmin IPN = IS - 1.5 1.6 V Maximum output voltage VPNmax IPN = IS - - 15 V Output current IS Spec. - 19 - mA Line/Load regulation %/VP 10V > VPN > 1.6V - - ±1 %/V Switching Characteristics (T = 25°°C) Characteristic Symbol Condition Min. Typ. Max. Unit Output current rising time tRise VPN = 0V → 3V - 0.25 1 uS Output current falling time tFall VPN = 3V → 0V - 0.1 0.5 uS I/V curve Thermal protection -2Please visit http://www.cxltech.cn for more patent information. Tel 0755-86091963 Fax:0755-82725693 ： Ver. 01 NT503 Application Circuits Lighting application LED dimming application Bin code list (N、 、P)Vf=3V If bin Type message Min(mA) Typ.(mA) Max(mA) ±8% O 18 19.5 21 NT503S(O) ±4% A 18 18.8 19.5 NT503S(A) B 19.5 20.2 21 NT503S(B) Printing message 深 圳市 诚信 联科 技有 限公 司 Shenzhen chengxinlian technology Ltd. DEVICE: NT503S(O) LOT NO: 133502-03 QTY: 4000 EA DATE CODE: 2013-8-6 If=18-21MA ROHS -3Please visit http://www.cxltech.cn for more patent information. Tel 0755-86091963 Fax:0755-82725693 ： Ver. 01 NT503 Package Dimensions PLCC 3014 Soldering pattern Bottom view Packaging Dimensions of Reel -4Please visit http://www.cxltech.cn for more patent information. Tel 0755-86091963 Fax:0755-82725693 ： Ver. 01