• [ CXLE8283 ]

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1.产品概述       2.产品特点     rHq嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）rHq嘉泰姆

5.产品封装       6.电路原理图  rHq嘉泰姆

7.相关产品rHq嘉泰姆

   产品概述 返回TOPrHq嘉泰姆

   The CXLE8283 is a PWM high-efficiency LED drivercontrol IC. It allows efficient operation of high-brightness (HB) LEDs from voltage sources ranging from 10VDC up to 600VDC. The controls an externalMOSFET at fixed switching frequencies up to 300 kHz . The frequency can be programmed using a single resistor. The LED string is driven at a constant current rather than a constant voltage, thus providing a constant light output and an enhanced reliability. The output current can be programmed between a few milliamps and up to more than 1.0A. The CXLE8283 uses a rugged high-voltage junction isolated process that can withstand an input voltage surge up to 600V. The output current to a LED string can be programmed to any value between zero and its maximum value by applying an external control voltage at the linear dimming control input of the CXLE8283.The CXLE8283 provides a low-frequency PWM dimming input that can canaccept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kilohertz.

CXLE8283是一个高效PWM LED驱动器控制芯片，它在输入电压DC/DC从10V~600V范围内能有效驱动高亮LED。该芯片能以高达300kHz的固定频率驱动外部MOSFET，其频率外部电阻编程决定.为了保正亮度恒定并增强LED的可靠 性，外部高亮LED串采用恒流方式控制，而不是恒压控制. 其恒流值由外部取样电阻值决定，变化范围从几毫安到1安培。CXLE8283使用了一个高压隔离连接工艺能经受高达600V的浪涌输入电压的冲击。对一个 LED 串的输出电流能被编程设定在零和它的最大值之间的任何值，它由输入到CXLE8283的线性调光器的外部控制电压所控制。另外CXLE8283也提供一个低频的PWM 调光功能，能接受一个外部达几千赫磁的控制信号在0-100% 的占空比下进行调光。rHq嘉泰姆

   产品特点 返回TOPrHq嘉泰姆

>90% efficiencyrHq嘉泰姆

10V to 600V input rangerHq嘉泰姆

Constant-current LED driverrHq嘉泰姆

Applications from a few mA to more than 1A outputrHq嘉泰姆

LED string from one to hundreds of diodesrHq嘉泰姆

Linear and PWM dimming capabilityrHq嘉泰姆

Input voltage surge ratings up to 600VrHq嘉泰姆

Over Temperature ProtectionrHq嘉泰姆

   应用范围 返回TOPrHq嘉泰姆

DC/DC or AC/DC LED driver applicationsrHq嘉泰姆

RGB backlighting LED driverrHq嘉泰姆

Backlighting of flat panel displaysrHq嘉泰姆

General-purpose constant current sourcerHq嘉泰姆

Signage and decorative LED lightingrHq嘉泰姆

AutomotiverHq嘉泰姆

ChargersrHq嘉泰姆

   技术规格书（产品PDF) 返回TOP rHq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！rHq嘉泰姆

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产品封装图 返回TOPrHq嘉泰姆

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电路原理图 返回TOPrHq嘉泰姆

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下一篇▶:CXLE8284输入电压0.8~5.5V可调恒定电流和限定电流两种模式来驱动白光LED升压型DC/DC变换器单节或双节干电池驱动单颗大功率白光LED

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