目录UqJ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）UqJ嘉泰姆

   5.产品封装   6.电路原理图  7.相关产品UqJ嘉泰姆

一.产品概述UqJ嘉泰姆

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

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

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

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

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

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

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

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

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

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

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

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

PB free. UqJ嘉泰姆

二.产品特点UqJ嘉泰姆

Up to 19V Output Voltage  UqJ嘉泰姆

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

Maximum 3MHz Operating Frequency  UqJ嘉泰姆

PWM Dimming Control  UqJ嘉泰姆

Shutdown Current<1uA  UqJ嘉泰姆

Current Limit Cycle-by-Cycle  UqJ嘉泰姆

Low Current Sense Threshold: 200mV  UqJ嘉泰姆

19V Over Output Voltage Protection  UqJ嘉泰姆

Compact SOT23-6 PackageUqJ嘉泰姆

三.应用范围UqJ嘉泰姆

Compact Back Light Module  UqJ嘉泰姆

Power Source for LED  UqJ嘉泰姆

Constant Current Source    UqJ嘉泰姆

四.技术规格书（产品PDF)UqJ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！UqJ嘉泰姆

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五.产品封装图UqJ嘉泰姆

  UqJ嘉泰姆

六.电路原理图UqJ嘉泰姆

   UqJ嘉泰姆

七.相关芯片选择指南UqJ嘉泰姆