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首页 > Products > Led Driver > Streetlight Spotlight Loghting Desk-lamp Lawn-lamp > Buck LED Spotlight Driver >Cxle8772 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~24V and the output current
Cxle8772 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~24V and the output current

IC internal integrated automatic temperature compensation
The control circuit, when the IC temperature exceeds 145 ℃, the IC will automatically reduce the output current, when the temperature rises to 155 ℃, the output current will
Attenuation to 0, which avoids the problem of LED low frequency flicker caused by traditional over temperature protection. Cxle8772 internal integrated power switch with
The high-end current detection mode sets the average current of led through the external resistance, and receives the analog dimming and a wide range of
PWM dimming signal.

Cxle8772 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~24V and the output current
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Product introduction

目录o1s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) o1s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)      o1s嘉泰姆


   CXLE8772 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o1s嘉泰姆
LED。IC 的输入电压范围为 5V~24V,输出电流外部可调,最大可达 1A。IC 内部集成自动温度补偿o1s嘉泰姆
控制电路,当 IC 的温度超过 145℃时,IC会自动降低输出电流,当温度升高到 155℃时,输出电流会o1s嘉泰姆
衰减至 0,这就避免了传统过温保护引起的 LED 低频闪烁问题。CXLE8772 内部集成功率开关,采用o1s嘉泰姆
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o1s嘉泰姆
PWM 调光信号。如果 DIM 的电压低于 0.3V,功率开关关断,CXLE8772 进入低功耗待机模式。o1s嘉泰姆
二.产品特点(Features)
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· 自动温度补偿控制o1s嘉泰姆
· 宽输入电压范围: 5V ~24Vo1s嘉泰姆
· 最大输出 1A 电流o1s嘉泰姆
· DIM 引脚进行 PWM 调光和模拟调光o1s嘉泰姆
· 3%输出电流精度o1s嘉泰姆
· LED 开路保护o1s嘉泰姆
· 可调软启动时间o1s嘉泰姆
· 高达 95%的效率o1s嘉泰姆
· 封装形式:SOT89-5L/SOT23-5Lo1s嘉泰姆
三,应用范围 (Applications)
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· 低压 LED 射灯替代卤素灯o1s嘉泰姆
· 低压工业 LED 照明o1s嘉泰姆
· LED 装饰照明o1s嘉泰姆
· 车载 LED 灯o1s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!o1s嘉泰姆

 QQ截图20160419174301.jpgo1s嘉泰姆

五,产品封装图 (Package)o1s嘉泰姆


image.pngo1s嘉泰姆

管脚号o1s嘉泰姆

管脚名称o1s嘉泰姆

描述o1s嘉泰姆

1o1s嘉泰姆

SWo1s嘉泰姆

功率管的漏端o1s嘉泰姆

2o1s嘉泰姆

GNDo1s嘉泰姆

IC 地o1s嘉泰姆

3o1s嘉泰姆

DIMo1s嘉泰姆

IC 使能端、模拟调光和 PWM 调光输入端o1s嘉泰姆

4o1s嘉泰姆

CSo1s嘉泰姆

电流采样端,采样电阻接在 CS 与 VIN 之间o1s嘉泰姆

5o1s嘉泰姆

VINo1s嘉泰姆

电源输入端,必须紧挨引脚接旁路电容到地o1s嘉泰姆

-o1s嘉泰姆

Exposed PADo1s嘉泰姆
(SOT89-5)
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散热片,接地o1s嘉泰姆

六.电路原理图o1s嘉泰姆


image.pngo1s嘉泰姆

七,功能概述o1s嘉泰姆


符号o1s嘉泰姆

参数o1s嘉泰姆

额定值o1s嘉泰姆

单位o1s嘉泰姆

VINo1s嘉泰姆

VIN 输入电压o1s嘉泰姆

-0.3~28o1s嘉泰姆

Vo1s嘉泰姆

SWo1s嘉泰姆

功率管漏端o1s嘉泰姆

-0.3~28o1s嘉泰姆

Vo1s嘉泰姆

CSo1s嘉泰姆

电流采样端 (相对于 VIN 引脚)o1s嘉泰姆

-1.0~+1.0o1s嘉泰姆

Vo1s嘉泰姆

DIMo1s嘉泰姆

DIM 引脚输入电压o1s嘉泰姆

-0.3~6o1s嘉泰姆

Vo1s嘉泰姆

ISWo1s嘉泰姆

开关管输出电流o1s嘉泰姆

1.2o1s嘉泰姆

Ao1s嘉泰姆

PDMAXo1s嘉泰姆

功率损耗(注 2)o1s嘉泰姆

1.5o1s嘉泰姆

Wo1s嘉泰姆

TJo1s嘉泰姆

工作结温范围o1s嘉泰姆

-40~155o1s嘉泰姆

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TSTGo1s嘉泰姆

储存温度范围o1s嘉泰姆

-55~155o1s嘉泰姆

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ESDo1s嘉泰姆

HBMo1s嘉泰姆

2000o1s嘉泰姆

Vo1s嘉泰姆

MMo1s嘉泰姆

200o1s嘉泰姆

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八,相关芯片选择指南o1s嘉泰姆


LED驱动芯片>低压照明o1s嘉泰姆

产品名称o1s嘉泰姆

功率管o1s嘉泰姆

调光方式o1s嘉泰姆

封装o1s嘉泰姆

典型应用o1s嘉泰姆

最大功率o1s嘉泰姆

应用领域o1s嘉泰姆

CXLE8770o1s嘉泰姆

外置o1s嘉泰姆

PWMo1s嘉泰姆

SOT23-6o1s嘉泰姆

__o1s嘉泰姆

__o1s嘉泰姆

车灯o1s嘉泰姆

CXLE8771o1s嘉泰姆

40V/0.4Ωo1s嘉泰姆

PWM/Linearo1s嘉泰姆

SOT89-5/ESOP8o1s嘉泰姆

1~21Wo1s嘉泰姆

21Wo1s嘉泰姆

交通警示灯o1s嘉泰姆

CXLE8772o1s嘉泰姆

40V/0.4Ωo1s嘉泰姆

PWM/Linearo1s嘉泰姆

SOT89-5/ESOP8o1s嘉泰姆

1~21Wo1s嘉泰姆

21Wo1s嘉泰姆

MR16射灯o1s嘉泰姆