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首页 > Products > Led Driver > Streetlight Spotlight Loghting Desk-lamp Lawn-lamp > Low-Voltage Lighting >Cxle8771 is a continuous inductive current mode step-down led cross current driver For efficiently driving one or more in series LED The input voltage range of IC is 5V~40V and the output current
Cxle8771 is a continuous inductive current mode step-down led cross current driver For efficiently driving one or more in series LED The input voltage range of IC is 5V~40V and the output current

IC internal integrated automatic temperature compensation
Compensation control circuit, when the IC temperature exceeds 125 ℃, the IC will automatically reduce the output current, and the output will eventually stabilize at
A certain current value can avoid the problem of LED low frequency flicker caused by traditional over temperature protection. Cxle8771 internal integrated power switch, adopt
With the high-end current detection method, the average current of LED is set through the external resistance, and the analog dimming and a wide range of
PWM dimming signal

Cxle8771 is a continuous inductive current mode step-down led cross current driver For efficiently driving one or more in series LED The input voltage range of IC is 5V~40V and the output current
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Product introduction

目录pP0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(产品PDF文档) pP0嘉泰姆
5.产品封装图   6.电路原理图  7.功能概述      8.相关产品
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一,产品概述(General Description)      pP0嘉泰姆


   CXLE8771 是一款连续电感电流模式的降压 LED 横流驱动器。用于高效地驱动一颗或者多颗串联pP0嘉泰姆
LED。IC 的输入电压范围为 5V~40V,输出电流外部可调,最大可达 1.2A。IC 内部集成自动温度补pP0嘉泰姆
偿控制电路,当 IC 的温度超过 125℃时,IC 会自动降低输出电流,根据环境温度输出会最终稳定在pP0嘉泰姆
某一电流值,这就避免了传统过温保护引起的 LED 低频闪烁问题。CXLE8771 内部集成功率开关,采pP0嘉泰姆
用高端电流检测方式,通过外部电阻设定 LED 平均电流,并通过 DIM 引脚接收模拟调光和很宽范围的pP0嘉泰姆
PWM 调光信号。如果 DIM 的电压低于 0.3V,功率开关关断,CXLE8771 进入低功耗待机模式。pP0嘉泰姆
二.产品特点(Features)
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· 自动温度补偿控制pP0嘉泰姆
· 宽输入电压范围: 5V ~40VpP0嘉泰姆
· 最大输出 1.2A 电流pP0嘉泰姆
· DIM 引脚进行 PWM 调光和模拟调光pP0嘉泰姆
· 3%输出电流精度pP0嘉泰姆
· LED 开路保护pP0嘉泰姆
· 可调软启动时间pP0嘉泰姆
· 高达 95%的效率pP0嘉泰姆
· 封装形式:SOT89-5L/SOT23-5LpP0嘉泰姆
三,应用范围 (Applications)
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低压 LED 射灯替代卤素灯pP0嘉泰姆
低压工业 LED 照明pP0嘉泰姆
LED 装饰照明pP0嘉泰姆
洗墙灯、泛光灯、台灯pP0嘉泰姆
四.技术规格书下载(产品PDF)
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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!pP0嘉泰姆

 QQ截图20160419174301.jpgpP0嘉泰姆

五,产品封装图 (Package)pP0嘉泰姆


image.pngpP0嘉泰姆

管脚号pP0嘉泰姆

管脚名称pP0嘉泰姆

描述pP0嘉泰姆

1pP0嘉泰姆

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功率管的漏端pP0嘉泰姆

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IC 地pP0嘉泰姆

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IC 使能端、模拟调光和 PWM 调光输入端pP0嘉泰姆

4pP0嘉泰姆

CSpP0嘉泰姆

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电源输入端,必须紧挨引脚接旁路电容到地pP0嘉泰姆

-pP0嘉泰姆

Exposed PADpP0嘉泰姆
(SOT89-5)
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散热片,接地pP0嘉泰姆

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六.电路原理图pP0嘉泰姆


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image.pngpP0嘉泰姆

七,功能概述pP0嘉泰姆


符号pP0嘉泰姆

参数pP0嘉泰姆

额定值pP0嘉泰姆

单位pP0嘉泰姆

VINpP0嘉泰姆

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-0.3~40pP0嘉泰姆

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电流采样端 (相对于 VIN 引脚)pP0嘉泰姆

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DIMpP0嘉泰姆

DIM 引脚输入电压pP0嘉泰姆

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八,相关芯片选择指南pP0嘉泰姆


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