Cxac8550 is an isolated, high PF, high current precision, single-stage constant current LED flyback topology drive power control chip. It is a high-performance control chip designed for LED driver under 50W.
The internal integrated power factor correction function of cxac8550 can achieve very small total harmonic distortion current through constant off time and operation in (DCM) intermittent mode. Moreover, the output constant current function can be realized without the control circuit of optocoupler and secondary side.
The cxac8550 can achieve high accuracy of output current adjustment and high efficiency of the whole power supply
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[ CXAC8550 ]"
目录
产品概述 返回TOP
CXAC8550是一款隔离、高PF、高电流精度、单级恒流LED反激拓扑驱动电源控制芯片。主要针对50W以内 LED驱动而设计的一款高性能控制芯片。
CXAC8550内部集成功率因素校正功能、通过恒定关断时间和工作在（DCM）断续模式中，可以达到很小的总谐波失真电流。而且不需要光耦和副边的控制电路就能实现输出恒流功能。CXAC8550能够实现较高的输出电流调整精度和较高的电源整机效率。
产品特点 返回TOP
原边控制，无需光耦和副边控制电路
全电压范围内工作，恒流精度在+/-5%内
工作在断续模式中，高达50W的驱动能力
内置脉冲前沿消隐，逐周期电流控制
实现短路保护、过流保护、开路保护（自恢复功能）
内置软启动电路，过欠压保护、过温保护功能
输出电流和输出功率可调节
应用范围 返回TOP
电池充电器、适配器、辅助电源
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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AC/DC Converter（AC/DC转换器）>>>原边控制芯片系列) |
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Part Number |
Power |
Standby |
MODE |
Freq |
Accu |
Cable |
OTP/ |
Package |
|
(80-265V) |
(mW) |
(Flyback) |
(KHz) |
CC/CV |
Compen-sation |
OVP |
||
|
10W |
≤300 |
PFM |
65 |
5%/5% |
Y |
-/Y |
SOP8 |
|
|
12W |
≤30 |
PFM |
65 |
5%/3% |
Y |
Y/Y |
SOP8 |
|
|
10W |
≤100 |
PFM |
65 |
7%/5% |
- |
Y/- |
SOT23-6 |
|
|
5W |
≤100 |
PFM |
65 |
7%/5% |
- |
Y/- |
SOP8 |
|
|
12W |
≤30 |
PFM |
65 |
5%/5% |
Y |
-/Y |
SOT23-6 |
|
|
10W |
≤30 |
PFM |
65 |
5%/5% |
Y |
-/Y |
SOP8 |
|
|
18W |
≤30 |
PFM |
65 |
5%/5% |
Y |
Y/Y |
SOT23-6 |
|
|
15W |
≤100 |
PFM |
65 |
5%/5% |
Y |
Y/Y |
DIP-8 |
|
|
4W |
≤30 |
PFM |
65 |
5%/5% |
Y |
-/Y |
SOP8 |
|
|
30W |
≤100 |
PFM/PWM |
65 |
3%/- |
- |
Y/Y |
SOP8 |
|
|
10W |
≤30 |
PFM |
65 |
5%/5% |
Y |
-/Y |
SOP8 |
|
|
18W |
≤80 |
QR |
120 |
5%/3% |
Y |
Y/Y |
SOT23-6 |
|
|
5W |
≤80 |
QR |
120 |
5%/3% |
Y |
Y/Y |
SOP7 |
|
|
10W |
≤80 |
QR |
120 |
5%/3% |
Y |
Y/Y |
DIP7 |
|
|
10W |
≤80 |
QR |
120 |
5%/3% |
Y |
Y/Y |
SOP7 |
|
