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ME8200

ME8200资料
ME8200
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File Size : 116 KB
Manufacturer:ME
Description:暂无任何描述...
 
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型 号:ME8200
厂 家:ME
封 装:SOT23-6
批 号:2015
数 量:20000
说 明:

我司专业代理微盟AC-DC产品线, 专业代理品质保证,原装正品.量大价优,欢迎查询.

ME8200 产品特点:频率抖动功能,频率外置电阻可调,待机功耗小于200mW,LEB,内置OCP补偿,OVP,OTP,OTP保护,30W以下LED灯具可做隔离和不隔离等条灯方案.

 

General Description

ME8200 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in sub 30W range. PWM switching frequency at normal operation is externally programmable and trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversion efficiency is thus achieved.VDD low startup current and low operating current contribute to a reliable power on startup design with ME8200. A large value resistor could thus be used in the startup circuit to minimize the standby power.The internal slope compensation improves system large signal stability and reduces

the possible subharmonic oscillation at high PWM duty cycle output. Leading-edge blanking on current sense(CS) input removes the signal glitch due to snubber circuit diode reverse recovery and thus greatly reduces the external component count and system cost in the design. ME8200 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). The Gate-drive output is clamped to maximum 18V to protect the power MOSFET. Excellent EMI performance is achieved with frequency shuffling technique together with soft switching control at the totem pole gate drive output. Tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation. ME8200 is offered in SOT23-6 package.

 

Features

1)Frequency Shuffling Technology for Improved EMI Performance.

2)Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design

3)Audio Noise Free Operation

4)External Programmable PWM Switching Frequency

5)Internal Synchronized Slope Compensation

6)Low VDD Startup Current and Low Operating Current (1.4mA)

7)Leading Edge Blanking on Current Sense Input

8)Good Protection Coverage With Auto Self-Recovery

9) VDD Over Voltage Clamp and Under Voltage Lockout with Hysteresis (UVLO)

10)Gate Output Maximum Voltage Clamp (20V)

11)Line Input Compensated Cycle-by-Cycle Over-current

Threshold Setting For Constant Output Power Limiting

Over UniversalInputVoltageRange.

12)Overload Protection (OLP)

 

Typical Application

Offline AC/DC flyback converter for

Battery Charger

Power Adaptor

Set-Top Box Power Supplies

Open-frame SMPS


 
 
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