CXLE8171

CXLE8171是一款专为白光LED设计的升压型恒流驱动器. 通过内置45V功率管,使得CXLE8171能驱动单串10LEDs串连负载,从而保证所有LED电流相同。CXLE8171内置升压转换器工作在1MHz震荡频率和1.3A电流极限,也能用于通用型的高亮度LED照明。CXLE8171回馈电压为200mV,通过回馈电阻可以设置LED最大输出电流。通过外加在EN端的PWM调光信号,可以得到与PWM占空比成比例的LED电流输出,其PWM调光频率范围:8KHz~200KHz,并在调光时不会在输出电容上产生音频噪声。其内置38.5过压保护功能为LED提供开路保护

CXLE8171白光LED设计的升压型恒流驱动器内置45V功率管驱动单串10LEDs串连负载LED电流相同EN端PWM调光信号与PWM占空比成比例的LED电流输出

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1.产品概述       2.产品特点     hA5嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)hA5嘉泰姆

5.产品封装       6.电路原理图  hA5嘉泰姆

7.相关产品hA5嘉泰姆

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     CXLE8171是一款专为白光LED设计的升压型恒流驱动器. 通过内置45V功率管,使得CXLE8171能驱动单串10LEDs串连负载,从而保证所有LED电流相同。CXLE8171内置升压转换器工作在1MHz震荡频率和1.3A电流极限,也能用于通用型的高亮度LED照明。CXLE8171回馈电压为200mV,通过回馈电阻可以设置LED最大输出电流。通过外加在EN端的PWM调光信号,可以得到与PWM占空比成比例的LED电流输出,其PWM调光频率范围:8KHz~200KHz,并在调光时不会在输出电容上产生音频噪声。其内置38.5过压保护功能为LED提供开路保护。CXLE8171采用TSOT23-6封装。The CXLE8171 is a constant current step-up converter specifically designed to drive white LEDs. With a 45V rated integrated switch FET, the step-up converter supports up to 10 white LEDs in series connection, so the LED currents are identical for uniform brightness. The boost converter runs at 1.0MHz fixed switching frequency with 1.3A switch current limit, and allows for the use of a high brightness LED in general lighting. The maximum white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, the LED current can be controlled through the EN pin with a 8KHz or higher frequency PWM dimming signal on EN pin, CXLE8171 operates in PWM dimming mode, which the duty cycle determines the feedback reference voltage. The CXLE8171 does not generate audible noises on the output capacitor. For the protection, the ECXLE8171provides 41.5V OVP to prevent damage from LED open. The ECXLE8171is available in low profile TSOT23-6 package.

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‧2.6V~5.5V输入电压hA5嘉泰姆

‧38.5V过压保护hA5嘉泰姆

‧内置软启动hA5嘉泰姆

‧补偿内置hA5嘉泰姆

PWM调光频率范围:8KHz~200KHzhA5嘉泰姆

‧内置45V功率管hA5嘉泰姆

‧工作频率高达1MHzhA5嘉泰姆

‧过压保护hA5嘉泰姆

过温保护hA5嘉泰姆

‧输入欠压锁定hA5嘉泰姆

‧TSOT23-6封装hA5嘉泰姆

‧符合RoHS规范及Pb-FreehA5嘉泰姆

 2.6V to 5.5V Input RangehA5嘉泰姆

 41.5V Output Over Voltage ProtectionhA5嘉泰姆

 Internal Soft-StarthA5嘉泰姆

 Internal CompensationhA5嘉泰姆

 External PWM Dimming with 8KHz - 100KHzhA5嘉泰姆

Frequency RangehA5嘉泰姆

 Internal 45V N-FEThA5嘉泰姆

 1MHz Fixed Switching FrequencyhA5嘉泰姆

 Over Voltage ProtectionhA5嘉泰姆

 Over Thermal ProtectionhA5嘉泰姆

 VIN Under Voltage LockOuthA5嘉泰姆

 Available in TSOT23-6 PackagehA5嘉泰姆

 RoHS Compliant and 100% Lead (Pb)-FreehA5嘉泰姆

Halogen-FreehA5嘉泰姆

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白光LED驅動器   > LED背光hA5嘉泰姆

Part   NumberhA5嘉泰姆

remarkhA5嘉泰姆

Vin (V)hA5嘉泰姆

Vout hA5嘉泰姆

(max)(V)hA5嘉泰姆

FB(V)hA5嘉泰姆

IQ(mA)hA5嘉泰姆

Isw(A)hA5嘉泰姆

Max LEDhA5嘉泰姆

Peak hA5嘉泰姆

Efficency hA5嘉泰姆

(%)hA5嘉泰姆

PackagehA5嘉泰姆

CXLE8167hA5嘉泰姆

Small Package, High Performance, Asynchronies Boost for WLED DriverhA5嘉泰姆

2.6~5.5hA5嘉泰姆

18hA5嘉泰姆

0.2hA5嘉泰姆

0.4hA5嘉泰姆

2hA5嘉泰姆

15P3ShA5嘉泰姆

93hA5嘉泰姆

TSOT23-5hA5嘉泰姆

CXLE8168hA5嘉泰姆

White LED Driver For Buck-Boost ApplicationhA5嘉泰姆

6~25hA5嘉泰姆

32hA5嘉泰姆

Vctrl/10hA5嘉泰姆

1.3hA5嘉泰姆

1.4hA5嘉泰姆

3 x 9 = 27hA5嘉泰姆

90hA5嘉泰姆

TDFN-8hA5嘉泰姆

CXLE8169hA5嘉泰姆

White LED Boost Converter with PWM Dimming and Single-Wire InterfacehA5嘉泰姆

2.7~5.5hA5嘉泰姆

38hA5嘉泰姆

0.2hA5嘉泰姆

0.35hA5嘉泰姆

1.3hA5嘉泰姆

12hA5嘉泰姆

91hA5嘉泰姆

TDFN-6hA5嘉泰姆

CXLE8170hA5嘉泰姆

10 White LED Boost Converter with PWM Dimming and Single-Wire Series   InterfacehA5嘉泰姆

2.5 ~ 5.5hA5嘉泰姆

38.5hA5嘉泰姆

0.2/0.3hA5嘉泰姆

0.3hA5嘉泰姆

1.3hA5嘉泰姆

12hA5嘉泰姆

88hA5嘉泰姆

TSOT23-6,SOT23-6hA5嘉泰姆

CXLE8171hA5嘉泰姆

10 White LED Boost Converter with PWM DimminghA5嘉泰姆

2.5~5.5hA5嘉泰姆

38.5hA5嘉泰姆

0.2hA5嘉泰姆

0.3hA5嘉泰姆

1.3hA5嘉泰姆

12hA5嘉泰姆

88hA5嘉泰姆

TSOT23-6hA5嘉泰姆

CXLE8172hA5嘉泰姆

6 String White LED Driver with Boost ConverterhA5嘉泰姆

2.5~24hA5嘉泰姆

43hA5嘉泰姆

0.5hA5嘉泰姆

2hA5嘉泰姆

2.5hA5嘉泰姆

6 × 10= 60hA5嘉泰姆

90hA5嘉泰姆

TQFN-20hA5嘉泰姆

CXLE8173hA5嘉泰姆

4 Strings High Current White LED Driver with Boost ControllerhA5嘉泰姆

4.5~28hA5嘉泰姆

65hA5嘉泰姆

0.6hA5嘉泰姆

0.75hA5嘉泰姆

-hA5嘉泰姆

4 x 18 =72hA5嘉泰姆

93hA5嘉泰姆

SOP-16hA5嘉泰姆

CXLE8174hA5嘉泰姆

12 String White LED Driver With Boost ControllerhA5嘉泰姆

4.5~28hA5嘉泰姆

65hA5嘉泰姆

0.6hA5嘉泰姆

1.5hA5嘉泰姆

-hA5嘉泰姆

216hA5嘉泰姆

93hA5嘉泰姆

TSSOP-28(EP)hA5嘉泰姆

◀ 上一篇:集成PWM单线调光WLED升压恒流驱动单串10LEDs串连负载保证LED电流相同1MHz震荡频率和1.3A电流极限CXLE8170单线调光在EN端加入符合协议的脉冲信号获得32阶LED电流信号

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下一篇▶:4路大电流白光LED升压驱动芯片CXLE8173用于大尺寸LCD面板LED背光驱动器内部集成大功率高效率升压转换器提供4通道LED电流驱动电路PWM亮度调光模式