CXLE8147是一款PFM升压DC/DC驱动芯片，具有恒定电流，专为LED应用而设计。考虑到外电阻，输出电流可达0mA~500mA。一个低纹波、高效率的升压型DC/DC变换器可以由CXLE8147构成，只需三个外部元件。还提供了一个CE（芯片启用）功能，可以降低功耗
•低启动电压：0.8V（Iout=1mA）
•输出电流范围：0~500mA
•输出电流精度：10%
•高效：82%（类型）
•包装：SOT-89-5。
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[ CXLE8147 ]"
目录
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）
一.产品概述
The CXLE8147 is a PFM Step-up DC/DC driver IC with invariant current, design for LED applications. Thought the external resistance, output current reach 0mA~500mA. A low ripple, high efficiency step-up DC/DC converter can be constructed of CXLE8147 with only three external components. Also available is a CE (chip enable) function that reduce power consumption
二.产品特点
• Low start voltage：0.8V ( at Iout=1mA)；
• Output Current range：0~ 500mA；
• Output Current accuracy：±10%；
• High Efficiency：82%(Type)；
• PACKAGE： SOT-89-5.
三.应用范围
• Power source for white LED
• Supply constant current
• Power source for a single or dual-cell battery-powered equipments
四.技术规格书（产品PDF)
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！
五.产品封装图
六.电路原理图
七.相关芯片选择指南
| 升压型LED背光/照明驱动电路(Step-up White LED Driver ) | |||||||||
| Applications: Step-up converter to drive white-LED, constant current output, LED backlight | |||||||||
| Part No. | Mode | VIN | VOUT | IQ | FOSC | Eff. | FB Voltage | Package | Application |
| CXLE8147 | PFM | 0.8~9V | 36uA | 300kHz | 82% | 200mV | SOT89-5 | Step-up Converter To Drive One Or Two 1W White LEDs | |
| CXLE8148 | PFM | 2~6V | 19V Max | 93μA | 3MHz | 80% | 200mV | SOT23-6 | STBA,PHONE,PDA,GPS |
| CXLE8149 | PWM | 2.5~5.5V | 28V Max | 150μA | 1.2MHz | 90% | 250mV | SOT23-6 | |
| CXLE8150 | PWM | 2.5~5.5V | 30V Max | 150μA | 1.2MHz | 96% | 1.23V | SOT23-5 | |
