CXLE8148 Step-up converter to drive white-LED, constant current output, LED backlight ,variable frequency step-up Converter drives white LEDs with a constant current to provide backlight in cell

目录PBw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）</span>PBw嘉泰姆

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

一.产品概述PBw嘉泰姆

 The CXLE8148 variable frequency step-up Converter drives white LEDs with a constant PBw嘉泰姆

current to provide backlight in cell phones, PDAs, and other hand-held devices. It PBw嘉泰姆

features allowing series connection of the white LEDs so that the LED currents are PBw嘉泰姆

identical for uniform brightness. An enable input can be pulsed repeatedly to adjust PBw嘉泰姆

LEDs brightness. The fast 3MHz operation frequency allows for smaller capacitor and PBw嘉泰姆

inductor. Fault condition protection uses cycle-by cycle current limiting to sense PBw嘉泰姆

maximum inductor current and over-voltage protection. The 0.2V low reference voltage PBw嘉泰姆

minimized the power loss across the current sense resistor. The converter can operate PBw嘉泰姆

from 2V to 6V, and capable of delivering maximum 250mA output current at 4-LEDs PBw嘉泰姆

application with 3V input voltage. Quiescent current drawn from power source is as low PBw嘉泰姆

as 120uA. All of these features make CXLE8148 be suitable for the portable devices, PBw嘉泰姆

which are supplied by a single battery. CXLE8148 is available in SOT23-6 package that is PBw嘉泰姆

PB free. PBw嘉泰姆

二.产品特点PBw嘉泰姆

Up to 19V Output Voltage  PBw嘉泰姆

Wide Operation Range: 2V to 6V  PBw嘉泰姆

Maximum 3MHz Operating Frequency  PBw嘉泰姆

PWM Dimming Control  PBw嘉泰姆

Shutdown Current<1uA  PBw嘉泰姆

Current Limit Cycle-by-Cycle  PBw嘉泰姆

Low Current Sense Threshold: 200mV  PBw嘉泰姆

19V Over Output Voltage Protection  PBw嘉泰姆

Compact SOT23-6 PackagePBw嘉泰姆

三.应用范围PBw嘉泰姆

Compact Back Light Module  PBw嘉泰姆

Power Source for LED  PBw嘉泰姆

Constant Current Source    PBw嘉泰姆

四.技术规格书（产品PDF)PBw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！PBw嘉泰姆

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五.产品封装图</p>

  PBw嘉泰姆

六.电路原理图</p>

   PBw嘉泰姆

七.相关芯片选择指南PBw嘉泰姆