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AP3783 Datasheet(PDF) 13 Page - Diodes Incorporated

Part # AP3783
Description  PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER
PDF  17 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP3783 Datasheet(HTML) 13 Page - Diodes Incorporated

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AP3783
Document number: DS37429 Rev. 6 - 2
13 of 17
www.diodes.com
December 2015
© Diodes Incorporated
AP3783
Operation Principle Description (Cont.)
VTH_ST
VOPR(MIN)
VFB(SCP)
tSCP
VCC
VFB
VOUT
0V
Figure 7. Short Circuit Protection (SCP) and Hiccup Mode
OVP
The AP3783 includes output over-voltage protection (OVP). If the voltage at FB pin exceeds VFB(OVP), the AP3783 immediately shuts down and
keeps the internal circuitry enabled to discharge the VCC capacitor to the UVLO turn-off threshold. After that, the device returns to the start
state and a start-up sequence ensues.
OTP
If the junction temperature reaches the threshold of +160
⁰C, AP3783 shuts down immediately. Before VCC voltage decreases to UVLO, if the
junction temperature decreases to +120
⁰C, AP3783 can recover to normal operation. If not, the power system enters restart Hiccup mode until
the junction temperature decreases below +120
⁰C.



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