CXLE8601调节器是固定频率的PWM升压LED恒流驱动器，可驱动系列1W LED单元线路和负载调节。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。CXLE8602可以直接驱动6系列1W LED单元。CXLE8601调节器是固定频率的PWM升压（升压）LED恒流驱动器，可驱动系列1W LED单元线路和负载调节。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。CXLE8601可以直接驱动5~8系列1W发光二极管（LED）单元，电压（VIN）>12V。该PWM控制电路能够将占空比从0%线性调整到95%。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3.6V至24V输入电压范围
0.22V FB可调LED驱动电流
直接驱动6系列1W LED
车辆识别号>=12V
固定400KHz开关频率
最大2A开关电流能力
效率高达92%
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
[ CXLE8601 ]
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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 CXLE8602 regulator is fixed frequency PWM Boost (step-up) LED
constant current driver,capable of driving Series 1W 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 CXLE8602 could directly drive 6 Series 1W LED units at VIN>12V .
The CXLE8601 regulator is fixed frequency PWM Boost (step-up) LED
constant current driver,capable of driving Series 1W 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 CXLE8601 could directly drive 5~8 Series 1W LED units at VIN>12V .
The PWM control circuit is able to adjust the duty ratio linearly from 0 to 95%. 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 3.6V to 24V Input Voltage Range
0.22V FB adjustable LED drive current
Directly drive 6 Series 1W LED at
VIN>=12V
Fixed 400KHz Switching Frequency
Max. 2A Switching Current Capability
Up to 92% 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 SOP8L package
三,应用范围 (Applications)
LED Lighting
Boost constant current driver
Monitor LED Backlighting
7’ to 15’ LCD Panels
四.技术规格书下载（产品PDF）
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 |
EN |
Enable Pin. Drive EN pin low to turn off the device, drive it |
|
2 |
VIN |
Supply Voltage Input Pin. CXLE8602 operates from a 3.6V to 24V |
|
3 |
FB |
Feedback Pin (FB). The feedback threshold voltage is 0.22V. |
|
4 |
NC |
No Connected. |
|
5,6 |
SW |
Power Switch Output Pin (SW). Output is the switch node that |
|
7,8 |
GND |
Ground Pin. |
六.电路原理图
七,功能概述
|
Parameter |
Symbol |
Value |
Unit |
|
Input Voltage |
Vin |
-0.3 to 26 |
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 (SOP8) |
RJA |
100 |
oC/W |
|
Operating Junction Temperature |
TJ |
-40 to 125 |
oC |
|
Storage Temperature |
TSTG |
-65 to 150 |
oC |
|
Lead Temperature (Soldering, 10 sec) |
TLEAD |
260 |
oC |
|
ESD (HBM) |
>2000 |
V |
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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