AP3783 datasheet(13/17 Pages) DIODES

No. de pieza	AP3783

Descripción Electrónicos	PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER

PDF	17 Pages

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Fabricante Electrónico	DIODES [Diodes Incorporated]

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13 / 17 page

AP3783

Document number: DS37429 Rev. 6 - 2

13 of 17

www.diodes.com

December 2015

AP3783

Operation Principle Description (Cont.)

VTH_ST

VOPR(MIN)

VFB(SCP)

tSCP

VCC

VFB

VOUT

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.

AP3783 Datasheet(PDF) 13 Page - Diodes Incorporated