Cxac8568 works in original edge detection and adjustment mode, and optocoupler and TL431 can be omitted. The chip provides a very comprehensive self recovery protection function, including cycle by cycle over-current protection, over-voltage protection, open-loop protection, over temperature protection, output short circuit protection and CS open / short circuit protection. Very low chip start current can meet the high standby power consumption standard. In constant current mode, current and output power can be adjusted by RS resistance of CS pin; in constant voltage mode, multi-mode operation can obtain high performance and efficiency. In addition, the output line compensation function helps to obtain a better load regulation rate
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[ CXAC8568 ]"
目录
产品概述 返回TOP
CXAC8568是一款高精度的恒压、恒流原边反馈交直流转换控制器。外部驱动三极管，用于高性能、外围元器件精简的充电器。CXAC8568工作再原边检测和调整模式，可省略光耦和TL431。该芯片提供了极为全面的自恢复保护功能，包含逐周期过流保护、过压保护、开环保护、过温保护、输出短路保护和CS开/短路保护等。极低的芯片启动电流能够满足较高的待机功耗标准。在恒流模式，电流和输出功率可通过CS脚的Rs电阻进行调节；在恒压模式，多模式工作可获得较高的性能和效率。另外，输出线补偿功能有助于获得较好的负载调整率
产品特点 返回TOP
?全电压输入范围±5% 的电压调整率
?原边反馈和调节可省光耦和TL431
?恒压和恒流可调
?输出线补偿功能
?内置原边电感量补偿电路
?内置高压启动电路
?优异全面的保护功能
?过温保护 (OTP)
?VDD欠压锁定 (UVLO)
?逐周期过流保护 (OCP)
?开环保护 (OLP)
?VDD过压保护 (OVP)
?CS开/短路保护
?安全自动恢复
应用范围 返回TOP
• 开关电源适配器
• 电池充电器
• 线性电源调节器或者RCC方案替代
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
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AC-DC(PSR)原边反馈PSR交直流转换器 |
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Product |
Standby Power |
SW Voltage |
VDD Operation Voltage |
Output Power |
CC/CV Precision |
Frequency |
Package |
Note |
|
0~650V |
<50mW |
13Ω |
9~26V |
5W |
±3% |
SOP8 |
Charger/LED |
|
|
0~650V |
<50mW |
8Ω |
9~26V |
6W |
±3% |
SOP8 |
Charger/LED |
|
|
0~650V |
<50mW |
4.5Ω |
9~26V |
8W |
±3% |
SOP7 |
Charger/LED |
|
|
0~650V |
<50mW |
3.6Ω |
9~26V |
12W |
±3% |
DIP8/SOP7 |
Charger/LED |
|
|
0~650V |
<50mW |
2.5Ω |
9~26V |
15W |
±3% |
DIP8/SOP7 |
Charger/LED |
|
|
0~650V |
<30mW |
18Ω |
9~30V |
6W |
±3% |
SOP7 |
SOP7 |
|
|
0~650V |
<30mW |
4.5Ω |
9~30V |
8W |
±3% |
SOP7 |
Charger/Adaptor |
|
|
0~650V |
<30mW |
2.5Ω |
9~30V |
18W |
±3% |
DIP8/SOP7 |
Charger/Adaptor |
|
|
0~800V |
<30mW |
2.5Ω |
9~30V |
15W |
±3% |
DIP8 |
Charger/Adaptor |
|
|
0~650V |
<30mW |
1.6Ω |
9~30V |
18W |
±3% |
DIP8 |
Charger/Adaptor |
|
|
Product |
Driver |
Standby Power |
Start-up Current |
VDD Operation Voltage |
Output Power |
CC/CV precision |
Package |
Note |
|
BJT |
<50mW |
5uA |
8~26V |
<15W |
±5% |
SOT23-6 |
Charger/LED |
|
|
MOS |
<100mW |
5uA |
10~26V |
<15W |
±5% |
SOT23-6 |
Charger/LED |
|
|
BJT |
<100mW |
5uA |
8~26V |
<15W |
±5% |
SOT23-5 |
Charger/LED |
|
|
MOS |
<100mW |
5uA |
8~26V |
<15W |
±5% |
SOT23-6 |
Charger/LED |
|
