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NCP348 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. NCP348
Description  Positive Overvoltage Protection Controller with Internal Low R_ON NMOS FET and Status FLAG
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP348
http://onsemi.com
5
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
100 ms
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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