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。

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[ CXLE8604 ]"
一,产品概述(General Description)
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
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高输出电压:支持升压至60V,可驱动16串1W/3W LED(输入24V时)
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精准调光控制:PWM调节占空比(0%-90%线性可调)
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高效节能:转换效率超94%,内置0.22V低采样电压
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全面保护功能:过流保护、热关断、限流及软启动
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简化设计:集成功率MOS、频率补偿模块,减少外围元件
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稳定运行:180KHz固定开关频率,5A最大开关电流
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灵活控制:支持EN脚TTL关机功能
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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)
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
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五,产品封装图 (Package)
六.电路原理图
七,物料清单
八.性能数据
九。DEMO 实物图
十.PCB 布局
十一. 应用信息
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) |
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 |