CXLE8604调节器是固定频率的PWM升压（升压）LED恒流驱动器，可驱动1W/3W/5W系列LED单元，具有良好的线路和负载调节能力。调节器使用简单，因为它包括内部频率补偿和固定频率振荡器所以它需要最少数量的外部组件才能工作。CXLE8605可以直接驱动16系列1W/3W LED单元（在车辆识别号=24伏时）。CXLE8604调节器是一种定频PWM升压（升压）LED恒流驱动器，能够驱动1W/3W/5W系列LED单元，具有优异的性能线路和负载调节。调节器使用简单，因为它包括内部频率补偿和固定频率振荡器需要最少数量的外部组件才能工作。CXLE8604可以直接驱动11系列1W LED单元（在车辆识别号>12V时）。
PWM控制电路能够将占空比从0线性调整到90%。一个使能功能，一个过电流保护功能内置。内置一个内部补偿块以最小化外部组件计数。
宽5V至32V输入电压范围
最大升压输出高达60V
0.22V FB可调LED驱动电流
直接驱动16系列1W/3W LED at
车辆识别号=24伏
固定180KHz开关频率
最大5A开关电流能力
效率高达94%
优良的线路和负载调节
EN引脚TTL关闭能力
内优化功率MOSFET
内置软启动功能
内置频率补偿
内置热关机功能
内置限流功能
[ CXLE8604 ]
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目录
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）
5.产品封装图 6.电路原理图 7.功能概述 8.相关产品
一,产品概述(General Description)
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)
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 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)
|
Pin Number |
Pin Name |
Description |
|
1 |
GND |
Ground Pin. |
|
2 |
EN |
Enable Pin. Drive EN pin low to turn off the device, drive it |
|
3 |
SW |
Power Switch Output Pin (SW). |
|
4 |
VIN |
Supply Voltage Input Pin. CXLE8605 operates from a 5V to 32V |
|
5 |
FB |
Feedback Pin (FB). The feedback threshold voltage is 0.22V. |
六.电路原理图
七,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 |
八,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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