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ME8401

ME8401資料
ME8401
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File Size : 116 KB
Manufacturer:微盟
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價 格  
 
 
型 號:ME8401
廠 家:微盟
封 裝:SOP8
批 號:2015
數 量:25000
說 明:



我司專業代理微盟AC-DC產品線, 專業代理品質保證,原裝正品.量大價優,歡迎查詢.

 

ME8401 優勢與功能:推MOS管,BOOST模式,PFM控制模式,外加PWM驅動可做300W以下開關電源,90W以下單級PFC LED驅動.

 

MD8401 可替代L6562,L6561,FAN6961

 

ME8401是一款專門針對功率因數校正而設計的控制芯片。主要針對300W以內開關電源、適配器、充電器而設計。全電壓范圍內可以輕松做到非常高PF值、很小的總諧波失真電流(THD)。內部的乘法器帶有最優化的THD專門電路,能有效地控制AC輸入電流的交越失真和誤差放大器輸出紋波失真,從而提高功率因數和降低(THD)。

 

主要特點

寬電源電壓范圍(10.5-21V)、內部THD優化電路

極低的啟動電流(110uA)和工作電流(1.8mA)

峰值電流控制模式(工作在臨界TM狀態)

推挽式驅動輸出,高達+800mA/-600mA的驅動電流

內部參考電壓精度為1%以內

可調的外部過電壓保護,能有效的處理開機和負載變化時產生的過電壓

內置電流檢測低通濾波器

封裝形式:SOP-8、DIP-8

 

General Description

The ME8401 is a current-mode PFC controller operating in Transition Mode (TM). Pin-to-pin compatible with the predecessor ME8401, it offers improved performance. The highly linear multiplier includes a special circuit, able to reduce AC input current distortion, that allows wide-range-mains operation with an extremely low THD, even over a large load range. The output voltage is controlled by means of a voltage-mode error amplifier and a precise (1% @Tj =25°C) internal voltage reference. The device features extremely low consumption (≤120 uA before start-up and <2mA running) and includes a disable function suitable for IC remote ON/OFF, which makes it easier to comply with energy saving norms (Blue Angel, EnergyStar, Energy2000, etc.). An effective two-step OVP enables to safely handle overvoltage either occurring at start-up or resulting from load disconnection. The totem-pole output stage, capable of 600mA source and 800mA sink current, is suitable for big MOS-FET or IGBT drive which, combined with the other features, makes the device an excellent low-cost solution for EN61000-3-2 compliant SMPS's up to 300W.

 

Features

 

●Transition-Mode control of PFC pre-regulators

●Proprietary multiplier design for minimum THD of AC input current

●Very precise adjustable output overvoltage protection

●Ultra-low(≤120uA) start-up current

●Extended IC supply voltage range

●On-chip filter on current sense

●Disable function

●1%(@ Tj = 25 °C) internal reference voltage

●-600/+800mA totempole gate driver with UVLO pull-down and voltage clamp

●DIP-8/SOP-8 packages

 

 

 Applications

 

PFC pre-regulators for:

●IEC61000-3-2 compliant SMPS(TV, Desktop PC, Monitor) up to 300W

●Hi-end AC-DC adapter/charger

●Entry level server & web server

 


 
 
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新舊程度:全新原裝
 
 
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