NCP349MN datasheet(5/12 Pages) ONSEMI

Part #	NCP349MN

Description	Positive Overvoltage Protection Controller with Internal Low RON NMOS FET

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NCP349

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TIMING DIAGRAMS

FLAG

Vout

Vin

UVLO

ton

0.3 V

tstart

1.2 V

<OVLO

Vin − (RDS(on)

I)

FLAG

Vin

EN

1.2 V

OVLO

UVLO

ton + tstart

FLAG

Vout

Vin

OVLO

toff

0.3 V

tstop

0.4 V

Vin − (RDS(on)

I)

FLAG

Vout

EN

1.2 V

tdis

0.3 V

Vin − (RDS(on)

I)

Figure 3. Startup

Figure 4. Shutdown on Overvoltage Detection

Figure 5. Disable on EN = 1

Figure 6. FLAG Response with EN = 1

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