YB8
YB808 FOR MR16 LED 驱动应用方案
YB808-MR16 应用推荐使用的元件：
RS 精度大于1% RS=0.1/ILED，比如要输出350mA，则RS=0.1/0.35=0.2857 OHM
10uF (工作电压>30V) 输出电流小于400mA 1210 陶瓷贴片电容
CIN
22uF (工作电压>30V) 输出电流大于400mA 1210 陶瓷贴片电容
SS14 输出电流小于400mA 推荐使用SS14 ，大于400mA 推荐SS24
D
MBRS14（整流二极管） 导通压降0.30V，有利于提高系统效率
33-47uH (饱和电流>1.8A) 输出电流在800mA 到1200mA
L 47-68uH (饱和电流>1.2A) 输出电流在400mA 到800mA
68-100uH (饱和电流>0.6A) 输出电流小于400mA
YB808 DEMO MR16 实物图
08 FOR MR16 LED 驱动应用方案
YB808-MR16 应用推荐使用的元件：
RS 精度大于1% RS=0.1/ILED，比如要输出350mA，则RS=0.1/0.35=0.2857 OHM
10uF (工作电压>30V) 输出电流小于400mA 1210 陶瓷贴片电容
CIN
22uF (工作电压>30V) 输出电流大于400mA 1210 陶瓷贴片电容
SS14 输出电流小于400mA 推荐使用SS14 ，大于400mA 推荐SS24
D
MBRS14（整流二极管） 导通压降0.30V，有利于提高系统效率
33-47uH (饱和电流>1.8A) 输出电流在800mA 到1200mA
L 47-68uH (饱和电流>1.2A) 输出电流在400mA 到800mA
68-100uH (饱和电流>0.6A) 输出电流小于400mA
YB808 DEMO MR16 实物图
H
igh Brightness LED Driver With High-Side Current Sense
GENERAL DESCRIPTION
r, designed for driving single or multiple series connected LED efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 8V and 40V and provides an externally adjustable output current of up to 1A.Depending upon supply voltage and external components, this can provide up to 32 watts of output power.
gh-sideoutput current sensing circuit, which uses an external resistor to set the nominal ***erage output current, and a dedicated DIM input accepts either a DC voltage or awide range of pulsed dimming. Applying a voltage of0.4V or lower to the DIM pin turns the output off and switches the device into a low current standby state.The
FEATURES
◆ Simple low parts count
◆ Wide input voltage range: 8V to 40V
◆ Up to 1A output current
◆ Single pin on/off and brightness control using DC voltage or PWM
◆ Up to 1MHz switching frequency
◆ Typical 5% output current accuracy
◆ Inherent open-circuit LED protection
◆ High efficiency (up to 95%)
◆ High-Side Current Sense
◆ Hysteretic Control: No Compensation
◆ Adjustable C***tant LED Current
APPLICATI***
◆ Low voltage halogen replacement LEDs
◆ Automotive lighting
◆ Low voltage industrial lighting
◆ LED back-up lighting
◆ Illuminated signs
◆ Emergency lighting , SELV lighting
◆ LCD TV backlighting