The CXLE8222 continuous mode inductive step-down converter,designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage.

目录DQm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>DQm嘉泰姆

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

一.产品概述DQm嘉泰姆

 The CXLE8222 is a continuous mode inductive step-down converter, designed for driving DQm嘉泰姆

single or multiple series connected LEDs efficiently from a voltage source higher than DQm嘉泰姆

the LED voltage. The device operates from an input supply between 6V and 32V and provides DQm嘉泰姆

an externally output current up to 1.4A. Depending upon supply voltage and external DQm嘉泰姆

components, this can provides up to 24 watts of output power. DQm嘉泰姆

 The CXLE8222 includes the output switch and a high-side output current sensing circuit,DQm嘉泰姆

which uses an external resistor to set the nominal average output current. Output current DQm嘉泰姆

can be adjusted by applying an external control signal to the 'ADJ' pin. The ADJ pin will accept either a DC voltage or a PWM waveform. During DC dimming, this will provide a DQm嘉泰姆

continuous output current that is proportional to the external applied DC voltage. During DQm嘉泰姆

the PWM dimming, this will provide a gated output current and the average current is proportional to the duty cycle. Applying a voltage of 0.2V or lower to the ADJ pin turns DQm嘉泰姆

the output off and switches the device into a low current standby state. DQm嘉泰姆

二.产品特点DQm嘉泰姆

Simple low parts count  DQm嘉泰姆

Internal 32V NDMOS switch  DQm嘉泰姆

Up to 1.4A output current  DQm嘉泰姆

Single pin on/off and brightness control using DC voltage or PWM  DQm嘉泰姆

Soft Start  DQm嘉泰姆

High efficiency (up to 97%) DQm嘉泰姆

Wide input voltage range: 6V to 32V  DQm嘉泰姆

Output shutdown  DQm嘉泰姆

Up to 1MHz switching frequency  DQm嘉泰姆

Inherent open-circuit LED protection  DQm嘉泰姆

Typical 4% output current accuracy  DQm嘉泰姆

High-side current sense  DQm嘉泰姆

Hysteretic control: no compensation  DQm嘉泰姆

AdjustaJTMBe constant LED current  DQm嘉泰姆

Over temperature protection  DQm嘉泰姆

Pb-free SOT89-5 packagesDQm嘉泰姆

三.应用范围DQm嘉泰姆

Low voltage halogen replacement LEDs DQm嘉泰姆

Automotive lighting  DQm嘉泰姆

Low voltage industrial lighting DQm嘉泰姆

LED back-up lighting  DQm嘉泰姆

Illuminated signs  DQm嘉泰姆

LCD TV backlighting    DQm嘉泰姆

四.技术规格书（产品PDF)DQm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！DQm嘉泰姆

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五.产品封装图</p>

  DQm嘉泰姆

六.电路原理图</p>

   DQm嘉泰姆

七.相关芯片选择指南DQm嘉泰姆