The chip has an active power factor correction circuit, which can achieve high power factor and low total harmonic distortion. The chip works in the critical continuous mode of inductive current, which reduces the switching loss and improves the utilization ratio of transformer. Cxac85145 integrates a variety of protection functions, greatly enhancing the reliability of the system. The protection functions include LED open circuit protection, led short circuit protection, chip power over-voltage protection, under voltage locking, current sampling resistance open circuit protection and cycle by cycle current limiting. All protections have automatic restart function. In addition, cxac85145 is integrated with over temperature regulation function to reduce the output current when the drive power is overheated
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[ CXAC85145 ]"
目录
7.相关产品
产品概述 返回TOP
CXAC85145是一款性能优异的原边反馈控制器，可以实现高精度的LED恒流驱动，无需次级反馈电路，节约系统成本和体积。芯片自带有源功率因数校正电路，可以实现很高的功率因数和很低的总谐波失真。芯片工作于电感电流临界连续模式，减小了开关损耗，提高了变压器利用率。CXAC85145集成了多种保护功能，极大的加强了系统的可靠性。保护功能包括LED开路保护、LED短路保护、芯片电源过压保护、欠压锁定，电流采样电阻开路保护和逐周期限流等。所有的保护都带有自动重启功能。此外，CXAC85145还集成有过温调节功能，在驱动电源过热时减小输出电流。
产品特点 返回TOP
◆ ±3%LED输出电流精度
◆ 单级、有源功率因数校正
◆ 原边反馈省去TL431和光耦以降低成本
◆ 电感电流临界连续模式
◆ 启动电流：33uA（典型值）
◆ 优异的线电压调整率和负载电压调整率
◆ 逐周期电流限制
◆ LED开、短路保护
◆ 电流采样电阻开路保护
◆ 欠压锁定（UVLO）
◆ VDD OVP保护功能
◆ 过温调节功能
◆ 自动重启功能
应用范围 返回TOP
◆GU10/E27 LED球泡灯、射灯
◆LED PAR30、PAR38灯
◆LED日光灯
◆其他LED照明
技术规格书（产品PDF) 返回TOP
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！
产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品......
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AC-IN Isolation LED Driver (2 Winding) |
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Product |
Product Info |
UVLO OFF |
VUVLO ON |
VJTMCamp |
Operating Current |
Freq kHZ |
Rdson Ω |
BVdss V |
CC |
Pack. |
|
12W原边控制高 精度恒流控制器 |
13.8v |
9V |
15V |
0.15mA |
70 |
- |
- |
±3% |
SOT23 |
|
|
3W原边控制高 精度恒流控制器 |
13.8V |
9V |
15V |
0.15mA |
70 |
30 |
650 |
±3% |
SOP8 |
|
|
3W原边控制高 精度横流控制器 |
5.9V |
4.7V |
6V |
0.25mA |
70 |
30 |
700 |
±3% |
SOP8 |
|
|
5W原边控制高 精度恒流控制器 |
13.8V |
9V |
15V |
0.15mA |
70 |
15 |
650 |
±3% |
SOP8 |
|
|
7W原边控制 高精度恒流控制器 |
13.8V |
9V |
15V |
0.15mA |
70 |
10 |
650 |
±3% |
SOP8 |
|
|
原边控制高 精度恒流控制器 |
6V |
4.4V |
6.1V |
0.3mA |
60 |
30 |
730 |
±3% |
SOP7 |
|
|
10W原边控制高 精度恒流控制器 |
13.8V |
9V |
15V |
0.15mA |
70 |
4.2 |
650 |
±3% |
DIP8 |
|
|
AC-IN Isolation LED Driver (3 Winding) |
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Product |
Product Info |
UVLO OFF |
VUVLO ON |
Vovp V |
Operating Current |
Freq kHZ |
Frequency Hopping |
Rdson |
BVdss |
CC |
Package |
|
20W原边控制高精度恒流PWM控制器 |
14.8V |
9V |
27.5 |
2mA |
55 |
YES |
- |
- |
±3% |
SOT26L |
|
|
12W原边控制高精度恒流PWM控制器 |
14.8V |
9V |
29.5 |
2.5mA |
55 |
YES |
5Ω |
650V |
±3% |
DIP8 |
|
|
18W原边控制高精度恒流PWM控制器 |
14.8V |
9V |
29.5 |
2.5mA |
55 |
YES |
2.5Ω |
650V |
±3% |
DIP8 |
|
|
AC-IN Isolation LED Driver With PFC |
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Product |
Product Info |
UVLO OFF |
VUVLO ON |
Vovp |
Operatin Current |
Tadj |
PF |
CC |
Package |
|
60W原边反馈单级有源PFC控制器 |
16.7V |
7.7V |
19V |
1mA |
YES |
>0.9 |
±3% |
SOT26L |
|
|
60W原边反馈单级有源PFC控制器 |
16.7V |
7.7V |
19V |
1mA |
YES |
>0.9 |
±3% |
SOP8 |
|
|
60W原边反馈单级有源PFC控制器 |
16.7V |
7.7V |
19V |
1mA |
YES |
＞0.9 |
±3% |
SOP8 |
|
|
12W原边反馈单级有源PFC控制器 |
16.7V |
7.7V |
19V |
1mA |
YES |
>0.9 |
±3% |
SOP8 |
|
|
18W原边反馈单级有源PFC控制器 |
16.7V |
7.7V |
19V |
1mA |
YES |
>0.9 |
±3% |
DIP8 |
|
