CXLE8612是一种带PFM的单片高压开关稳压器，专门设计用于12V~80V直流电源。CXLE8612是一款高效的LED驱动开关稳压器。LED串由直流恒流驱动，而不是恒压驱动，从而提供恒定的光输出和增强的可靠性。
工作电压DC 12V~80V。
0.1V电流感应电压参考。
直接驱动1~18系列1W/3W LED。
良好的线路和负载调节。
内部优化功率高压MOSFET。
内置热关机功能。
内置限流功能。
内置软启动电路。
提供TO263-5L套装。
效率高达98%
[ CXLE8612 ]
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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 CXLE8612 is a monolithic high voltage switching regulator with PFM that is specifically designed to operate from a 12V~80V DC power supply.
The CXLE8612 is a high efficiency LED driver switching regulator.The LED string is driven at DC constant current rather than constant voltage, thus providing constant light output and enhanced reliability.
二.产品特点(Features)
Operation Voltage DC 12V~80V.
0.1V current sense voltage reference.
Directly drive 1~18 Series 1W/3W LED.
Excellent line and load regulation.
Internal Optimize Power HV-MOSFET.
Built in Thermal Shutdown Function.
Built in Current Limiting Function.
Built in Soft-Start Circuit.
Available in TO263-5L package.
Up to 98% efficiency.
三,应用范围 (Applications)
LED Lighting & LED LAMP
General purpose LED lighting
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 |
START |
Internal soft start Pin. |
|
2 |
VREG |
Internal Voltage Regulation Pin. (The VREG is about 8V) |
|
3 |
VIN |
Input high voltage Pin. (Operation voltage 12V~80V) |
|
4 |
CSN |
Current Sense Negative Pin. |
|
5 |
CSP |
Current Sense Positive Pin. (The current sense voltage is 0.1V) |
六.电路原理图
七,功能概述
|
Parameter |
Symbol |
Value |
Unit |
|
Input Voltage |
Vin |
-0.3 to 90 |
V |
|
Power Dissipation |
PD |
Internally limited |
mW |
|
Thermal Resistance (TO263-5L) |
RJA |
30 |
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) |
>3000 |
V |
八,相关芯片选择指南
|
降压型LED恒流驱动器芯片(高电压型) |
||||||
|
12V ~ 80V |
1~18LED串 |
1A |
PFM |
Adj (0.1V) |
TO263-5L |
|
|
24V ~ 80V |
3~14LED串 |
1A |
PFM |
Adj (0.2V) |
TO252-5L |
|
|
24V ~ 100V |
3~8LED串 |
0.5A |
PFM |
Adj (0.2V) |
SOP8L |
|
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