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首页 > Products > Led Driver > LED Backlight > Boost LED Backlight >White LED Driver with Digital and PWM Brightness Control in Tiny Package,CXLE8142 operates at 600kHz fixed switching frequency to reduce output ripple, improve conversion efficiency,
White LED Driver with Digital and PWM Brightness Control in Tiny Package,CXLE8142 operates at 600kHz fixed switching frequency to reduce output ripple, improve conversion efficiency,

With a 40-V rated integrated power switch MOSFET, the CXLE8142 is a boost converter that drives up to 10 White LEDs in series. The CXLE8142 operates at 600kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.
The default Full-Scale White LED current is set by an external sensor resistor with regulated 200mV feedback voltage, as shown in typical application. During operation, the LED current can be controlled using the 1-wire digital interface through EN pin. Alternately, a Pulse Width Modulation (PWM) signal can also be applied on the EN pin, through which the PWM Duty-Cycle determines the feedback reference voltage and then the White LED current. In either 1-Wire digital or PWM mode, the CXLE8142 does not burst the LED current; therefore, it does not generate audible noises on the ceramic output capacitor. For maximum protection, the device features integrated open LED protection that disables the CXLE8142 to prevent the output voltage from exceeding the absolute maximum ratings during open LED conditions.

White LED Driver with Digital and PWM Brightness Control in Tiny Package,CXLE8142 operates at 600kHz fixed switching frequency to reduce output ripple, improve conversion efficiency,
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                          目录toI嘉泰姆

   1.产品概述      2.产品特点      3.应用范围     4.技术规格书下载(PDF文档)toI嘉泰姆

   5.产品封装      6.电路原理图     7.相关产品toI嘉泰姆

一.产品概述toI嘉泰姆


   With a 40-V rated integrated power switch MOSFET, the CXLE8142 is a boost converter that drives up to 10 White LEDs in series. The CXLE8142 operates at 600kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components. toI嘉泰姆

     The default Full-Scale White LED current is set by an external sensor resistor with regulated 200mV feedback voltage, as shown in typical application. During operation, the LED current can be controlled using the 1-wire digital interface through EN pin. Alternately, a Pulse Width Modulation (PWM) signal can also be applied on the EN pin, through which the PWM Duty-Cycle determines the feedback reference voltage and then the White LED current. In either 1-Wire digital or PWM mode, the CXLE8142 does not burst the LED current; therefore, it does not generate audible noises on the ceramic output capacitor. For maximum protection, the device features integrated open LED protection that disables the CXLE8142 to prevent the output voltage from exceeding the absolute maximum ratings during open LED conditions. toI嘉泰姆

    The CXLE8142 is available in a PCB space saving DFN 2mm x 2mm-6L Package with bottom thermal pad. Standard product is Pb-free and Halogen-free.  toI嘉泰姆

二.产品特点toI嘉泰姆


  2.7V~5.5V Input voltage rangetoI嘉泰姆

  38V Open LED ProtectiontoI嘉泰姆

  200mV Reference VoltagetoI嘉泰姆

  600kHz Switching frequencytoI嘉泰姆

  Up to 91% EfficiencytoI嘉泰姆

  Flexible Digital and PWM Brightness ControltoI嘉泰姆

  PWM Dimming Duty ranges from 1% to 100%toI嘉泰姆

  Built-in Soft-Start and Over-Current limittoI嘉泰姆

三.应用范围toI嘉泰姆


  Smart PhonestoI嘉泰姆

  TabletstoI嘉泰姆

  Portable games    toI嘉泰姆

四.技术规格书(产品PDF)toI嘉泰姆


需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持toI嘉泰姆

 QQ截图20160419174301.jpgtoI嘉泰姆

五.产品封装图toI嘉泰姆


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六.电路原理图toI嘉泰姆


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七.相关芯片选择指南   更多同类产品......toI嘉泰姆


LV Product>LED Backlight
Product Character Typical   Effciency Operating   Voltage Quiescent   Iq Output   Voltage Iq in Shutdown SW   Current Limit Package
CXLE8135 1MHz Asynchronous   PWM 88% 2.5~5.5V 400μA UP to 20V 1μA 1A SOT23-5L
CXLE8136 1MHz OVP   Asynchronous PWM 88% 2.5~6V 550μA Up to 25V 1μA 1A SOT23-6L
CXLE8137 1MHz OVP   Asynchronous PWM 92% 2.5~5.5V 400μA Up to 36V 1μA 1.2A SOT23-6L
CXLE8138 1MHz OVP   Asynchronous PWM 92% 2.5~5.5V 400μA Up to 36V 1μA 1.2A SOT23-6L   DFN22-8L
CXLE8139 1MHz OVP   Asynchronous PWM 92% 2.5~5.5V 400μA Up to 36V 1μA 2A TSOT23-6L   DFN22-8
背光驱动
Product VIN VIN VOVP VFB IQ ILIM R(ON) Freq. Efficiency Package
Min Max Typ Typ Typ Min Typ Typ Max
(V) (V) (V) (mV) (uA) (A) (Ω) (MHz) (%)
CXLE8140 3 5.5 38 0.2 300 1.5 0.3 0.6 91 SOT-23-6L
CXLE8141 3 5.5 26 0.2 300 1.5 0.3 1 91 SOT-23-6L
CXLE8142 2.7 5.5 38 0.2 400 0.8 0.6 0.6 91 DFN2020-6L
CXLE8143 2.7 5.5 38 0.2 200 1.2 0.45 1 92 TSOT-23-6L
CXLE8144 2.7 5.5 38 0.2 400 0.85 0.4 1.5 91 DFN2*2-6L