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首页 > Products > Led Driver > LED Driver Chip > Stepless Dimming Chip >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S1Y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) S1Y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)      S1Y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S1Y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S1Y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S1Y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S1Y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S1Y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。S1Y嘉泰姆
二.产品特点(Features)
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· 自动温度补偿控制S1Y嘉泰姆
· 宽输入电压范围: 5V ~40VS1Y嘉泰姆
· 最大输出 1.2A 电流S1Y嘉泰姆
· DIM 引脚进行 PWM 调光和模拟调光S1Y嘉泰姆
· 3%输出电流精度S1Y嘉泰姆
· LED 开路保护S1Y嘉泰姆
· 可调软启动时间S1Y嘉泰姆
· 高达 95%的效率S1Y嘉泰姆
· 封装形式:SOT89-5L/SOT23-5LS1Y嘉泰姆
三,应用范围 (Applications)
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低压 LED 射灯替代卤素灯S1Y嘉泰姆
低压工业 LED 照明S1Y嘉泰姆
LED 装饰照明S1Y嘉泰姆
洗墙灯、泛光灯、台灯S1Y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!S1Y嘉泰姆

 QQ截图20160419174301.jpgS1Y嘉泰姆

五,产品封装图 (Package)S1Y嘉泰姆


image.pngS1Y嘉泰姆

管脚号S1Y嘉泰姆

管脚名称S1Y嘉泰姆

描述S1Y嘉泰姆

1S1Y嘉泰姆

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功率管的漏端S1Y嘉泰姆

2S1Y嘉泰姆

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IC 地S1Y嘉泰姆

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DIMS1Y嘉泰姆

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4S1Y嘉泰姆

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电流采样端,采样电阻接在 CS 与 VIN 之间S1Y嘉泰姆

5S1Y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S1Y嘉泰姆

-S1Y嘉泰姆

Exposed PADS1Y嘉泰姆
(SOT89-5)
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散热片,接地S1Y嘉泰姆

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六.电路原理图S1Y嘉泰姆


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image.pngS1Y嘉泰姆

七,功能概述S1Y嘉泰姆


符号S1Y嘉泰姆

参数S1Y嘉泰姆

额定值S1Y嘉泰姆

单位S1Y嘉泰姆

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VIN 输入电压S1Y嘉泰姆

-0.3~40S1Y嘉泰姆

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功率管漏端S1Y嘉泰姆

-0.3~40S1Y嘉泰姆

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电流采样端 (相对于 VIN 引脚)S1Y嘉泰姆

-1.0~+1.0S1Y嘉泰姆

VS1Y嘉泰姆

DIMS1Y嘉泰姆

DIM 引脚输入电压S1Y嘉泰姆

-0.3~7S1Y嘉泰姆

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开关管输出电流S1Y嘉泰姆

1.2S1Y嘉泰姆

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PDMAXS1Y嘉泰姆

功率损耗(注 2)S1Y嘉泰姆

1.5S1Y嘉泰姆

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工作结温范围S1Y嘉泰姆

-40~150S1Y嘉泰姆

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储存温度范围S1Y嘉泰姆

-55~150S1Y嘉泰姆

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八,相关芯片选择指南S1Y嘉泰姆


LED驱动芯片>低压照明S1Y嘉泰姆

产品名称S1Y嘉泰姆

功率管S1Y嘉泰姆

调光方式S1Y嘉泰姆

封装S1Y嘉泰姆

典型应用S1Y嘉泰姆

最大功率S1Y嘉泰姆

应用领域S1Y嘉泰姆

CXLE8770S1Y嘉泰姆

外置S1Y嘉泰姆

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SOT23-6S1Y嘉泰姆

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车灯S1Y嘉泰姆

CXLE8771S1Y嘉泰姆

40V/0.4ΩS1Y嘉泰姆

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SOT89-5/ESOP8S1Y嘉泰姆

1~21WS1Y嘉泰姆

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交通警示灯S1Y嘉泰姆

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1~21WS1Y嘉泰姆

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MR16射灯S1Y嘉泰姆