CXLE8604 CXLE8605升压恒流LED驱动器 - 高效驱动1W/3W/5W LED，宽输入5V-32V，60V输出

CXLE8604是一款高性能升压恒流型LED驱动器，专为驱动1W、3W及5W LED灯设计。其具备卓越的线性调整率与负载调整率，内置固定频率振荡器和频率补偿电路，显著简化外部电路设计。在24V输入电压下，可高效驱动多达16串1W或3W LED灯。

一,产品概述(General Description)      

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       CXLE8605 是一款高性能升压恒流型LED驱动器，专为驱动1W、3W及5W LED灯设计。其具备卓越的线性调整率与负载调整率，内置固定频率振荡器和频率补偿电路，显著简化外部电路设计。在24V输入电压下，可高效驱动多达16串1W或3W LED灯。
      The CXLE8605 regulator is fixed frequency PWM Boost (step-up) LED constant current driver, capable of driving Series 1W/3W/5W LED units with excellent line and load regulation. The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimum number of external components to work.
   The CXLE8605 could directly drive 16 Series 1W/3W LED units at VIN=24V . 
   The CXLE8604 regulator is fixed frequency PWM Boost (step-up) LED constant current driver,capable of driving Series 1W/3W/5W LED units with excellent
line and load regulation. The regulator is simple to use because it includes
internal frequency compensation and a fixed-frequency oscillator so that it
requires a minimum number of external components to work.
     The CXLE8604 could directly drive 11 Series 1W LED units at VIN>12V .
     The PWM control circuit is able to adjust the duty ratio linearly from 0 to
90%. An enable function, an over current protection function is built inside. An internal compensation block is built in to minimize external component count.

二.产品特点(Features)

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• 宽输入电压范围：5V至32V，适配多种电源环境

• 高输出电压：支持升压至60V，可驱动16串1W/3W LED（输入24V时）

• 精准调光控制：PWM调节占空比（0%-90%线性可调）

• 高效节能：转换效率超94%，内置0.22V低采样电压

• 全面保护功能：过流保护、热关断、限流及软启动

• 简化设计：集成功率MOS、频率补偿模块，减少外围元件

• 稳定运行：180KHz固定开关频率，5A最大开关电流

• 灵活控制：支持EN脚TTL关机功能

• 紧凑封装：TO263-5L，适合高密度PCB布局

Wide 5V to 32V Input Voltage Range
Maximum Boost Output Up to 60V
0.22V FB adjustable LED drive current
Directly drive 16 Series 1W/3W LED at VIN=24V
Fixed 180KHz Switching Frequency
Max. 5A Switching Current Capability
Up to 94% efficiency
Excellent line and load regulation
EN PIN TTL shutdown capability
Internal Optimize Power MOSFET
Built in Soft-Start Function
Built in Frequency Compensation
Built in Thermal Shutdown Function
Built in Current Limit Function
Available in TO263-5L package
三,应用范围 (Applications)

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LED照明系统、车载灯饰、便携照明设备及工业LED驱动解决方案。
LED Lighting
Boost constant current driver
TFT LED Backlighting
四.技术规格书下载（产品PDF）CXLE8605

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！

 

五,产品封装图 (Package)

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六.电路原理图

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七,物料清单

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   八.性能数据

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   九。DEMO 实物图

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    十.PCB 布局

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  十一. 应用信息

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               PCB 布局指南 

1. VIN、GND、SW、VOUT 等功率线，粗、短、直；
2. FB 走线远离电感与肖特基等开关信号地方，建议使用地线包围；
3. 输入电容靠近芯片 VIN 与 GND 引脚。

十二,功能概述

Parameter	Symbol	Value	Unit
Input Voltage	Vin	-0.3 to 36	V
Feedback Pin Voltage	VFB	-0.3 to Vin	V
EN Pin Voltage	VEN	-0.3 to Vin	V
Output Switch Pin Voltage	VOutput	-0.3 to 60	V
Power Dissipation	PD	Internally limited	mW
Thermal Resistance (TO263-5L) (Junction to Ambient, No Heatsink, Free Air)	RJA	30	oC/W
Operating Junction Temperature	TJ	-40 to 125	oC

十三,相关芯片选择指南

产品型号	输入电压	最大输出电压	开关电流	开关频率	恒流设置	封装形式
CXLE8601	3.6V ~ 24V	32V	2A	400KHz	Adj   (0.22V)	SOP8L
CXLE8602	5V ~ 40V	60V	2A	400KHz	Adj   (0.22V)	SOP8L
CXLE8603	5V ~ 40V	60V	2A	400KHz	Adj   (0.22V)	SOP8L
CXLE8604	3.6V ~ 32V	60V	4A	180KHz	Adj   (0.22V)	TO252-5L
CXLE8605	5V ~ 32V	60V	5A	180KHz	Adj   (0.22V)	TO263-5L