CXAC85184是绿色模式脉冲宽度调制(PWM)控制器。它是专门为低电源应用,如5W-20W适配器和离线电池充电器。在这些典型应用中低待机功率、节省空间和低成本都是必需的。CXAC85184是满足这些要求的完美解决方案挑战。典型的备用电源只有0.13瓦。在正常操作中,CXAC85184会打开和关闭在60千赫的固定开关频率下。CXAC85184的电流限制能力约为420mA,可以直接驱动高压NPN晶体管的发射极。当输出功率低于给定水平时,集成电路进入跳过循环模式以降低功耗。CXAC85184还具有欠压锁定、过温功能
内齐纳二极管
低成本发射极驱动PWM解决方案
0.13W备用电源
当前模式操作
短路保护
过电流保护
过温保护
自动重启欠压闭锁
提供TO-94包装
[ CXAC85184 ]
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产品概述 返回TOP
The CXAC85184 is a green-mode Pulse Width Modulation (PWM) controller. It is specifically designed for low power applications such as 5W-20W Adaptors and Off- line battery Chargers.In these typical applications, the low standby power, space saving,and low cost are all required. CXAC85184 is a perfect solutions to meet these challenges. The typical standby power is only 0.13Watt.In normal operation, the CXAC85184 switches on and off at a fixed switching frequency of 60 kHz. With a current limit capability of about 420mA, the CXAC85184 can directly
drive the emitter of a high voltage NPN transistor. When the output power falls below a given level, the IC enters skip cycle mode to reduce power consumption.The CXAC85184 also features Under-Voltage Lockout , Over-Temperature Protection,Over-Current and Short Circuit Protections.The CXAC85184 is available in TO-94 Packages.
产品特点 返回TOP
Internal Zener Diode
Low Cost Emitter Drive PWM Solution
0.13W Standby Power
Current Mode Operation
Short Circuit Protection
Over-Current Protection
Over-Temperature Protection
Under-Voltage Lockout with Auto-restart
Available in TO-94 Packages
RoHS Compliant and 100% Lead (Pb)-Free
应用范围 返回TOP
Battery Chargers
Universal Off-line Power Supplies
Power Adaptors
LED 3W-9W Lighting Solutions with CXPU3359
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产品封装图 返回TOP
电路原理图 返回TOP
AC/DC PWM Controller |
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Product |
Status |
Device Description |
VIN(min~max) |
VOUT |
IOUT |
IQ(typ) |
Vfb |
Frequency |
Pkg |
Active |
1.9A固定频率白光驱动 |
2.5~5V |
3-27v |
1.9A |
170uA |
0.3V |
1.2MHZ |
SOT23-6 |
|
NRFED |
1A白光驱动 |
2.7~4.5V |
ADJ |
2.5A |
100uA |
0.1V |
1MHZ |
SOT23-6 |
|
NRFED |
450uA |
60KHZ |
420mA |
TO92 |
|||||
NRFED |
700uA |
40KHZ |
420mA |
SOT23-6 SOP8 |
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