电荷泵型LED背光驱动电路(Charge Pump LED Driver)CXLE8145 CXLE8146 is a low noise, high efficiency, and constant frequency charge pump DC/DC converter for white LED application. The operation frequency is 1MHz

目录r28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）</strong>r28嘉泰姆

   5.产品封装  6.电路原理图</strong>  7.相关产品r28嘉泰姆

一.产品概述r28嘉泰姆

CXLE8145 CXLE8146 is a low noise, high efficiency, and constant frequency charge pump DC/DC r28嘉泰姆

converter for white LED application. The operation frequency is 1MHz. CXLE8145 works r28嘉泰姆

in load switch (1×) and fractional (1.5×) modes with four independent control outputs, r28嘉泰姆

each channel can provide 20mA constant current precisely from a 2.8V to 5.5V supply. r28嘉泰姆

Only two external 1μF and two 0.47μF capacitors are required to build a compact and r28嘉泰姆

low-cost power supply solution. BCXLE8145uses EN pin for simple on/off control and r28嘉泰姆

single wire serial pulse dimming in 16 steps. A low current shutdown feature disconnects r28嘉泰姆

the load from VIN and reduces quiescent current to less than 1μA. r28嘉泰姆

二.产品特点r28嘉泰姆

• Input range: 2.8-5.5V r28嘉泰姆

• ±1% LED current accuracy r28嘉泰姆

• 20mA driver capacity each channel r28嘉泰姆

• Auto 1×/1.5× mode switchover r28嘉泰姆

• PWM dimming control r28嘉泰姆

• Serial-pulse dimming control in linear 16 steps r28嘉泰姆

• Short-circuit protection r28嘉泰姆

• Thermal shutdown r28嘉泰姆

• 1MHz constant switching frequency r28嘉泰姆

• 3mm×3mm QFN packager28嘉泰姆

三.应用范围r28嘉泰姆

• Programmable Current Sinks r28嘉泰姆

• White LED Backlighting r28嘉泰姆

• Cell Phones and Smart phones r28嘉泰姆

• PDAs, Digital Cameras, and Camcorders r28嘉泰姆

• Color (RGB) Lighting    r28嘉泰姆

四.技术规格书（产品PDF)r28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！r28嘉泰姆

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五.产品封装图</p>

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六.电路原理图</p>

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七.相关芯片选择指南r28嘉泰姆