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EM8672 Datasheet

PWM Controller

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EM8672
HV Start-up PWM Controller with Over Temperature Protection
General Description
EM8672 is a high performance, low cost, HV
Start-up, current mode PWM controller with green
mode power saving. The EM8672 integrates
functions of Soft Start(SS), Under Voltage
Lockout(UVLO), Leading Edge Blanking(LEB),
internal Over Temperature Protection(OTP),
internal slope compensation. The EM8672 also
features more protection like Over Load
Protection(OLP) and Over Voltage Protection(OVP)
to prevent circuit damage occurred under
abnormal conditions. The EM8672 also has external
Over Temperature Protection(Latch).
Features
700V High Voltage Start up Circuit
Current Mode Control
Soft Start Function
Built-in Slope Compensation
Internal Leading-edge Blanking
External Over Temperature Protection
Over Voltage Protection (OVP) on VCC pin
Over Load Protection (OLP)
Cycle-by-cycle Current Limit
Feedback Open Protection
Internal Over Temperature Protection (OTP)
Constant Output Power Limit (Full AC Input
Range)
Excellent EMI performance
Ordering Information
Part Number
EM8672G
EM8672G7
Package
SOP-8
SOP-7
Remark
Typical Application Circuit
AC EMI
INPUT Filter
Applications
LCD Monitor Power Supply
Open-Frame SMPS
+ DC
OUTPUT
HV VCC
LATCH
GATE
EM8672
COMP
CS
GD
2013/01/30
REV.A.4
1
Excelliance MOS
Excelliance MOS



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