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
-
[ CXLE8604 ]"
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 |
