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
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)
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 |
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