NCP348 데이터 시트보기 (PDF) - ON Semiconductor
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NCP348 Datasheet PDF : 13 Pages
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NCP348, NCP348AE
CONDITIONS
IN
OUT
VIN > OVLO
0 < VIN < UVLO
And/Or
VOLTAGE DETECTION
/EN = 1
Figure 16. Simplified Diagram
CONDITIONS
IN
OUT
/EN = 0
&
VOLTAGE DETECTION
UVLO < VIN < OVLO
Figure 17. Simplified Diagram
Operation
The NCP348 provides overvoltage protection for
positive voltage, up to 28 V. A Low RDS(on) NMOS FET
protects the systems (i.e.: charger) connected on the Vout
pin, against positive overvoltage. At powerup, with EN pin
= low, the output is rising up 50 ms after the input
overtaking undervoltage UVLO (Figure 3). The NCP348
provides a FLAG output, which alerts the system that a fault
has occurred. A 50 ms additional delay, regarding
available output (Figure 3) is added between output signal
rising up and to FLAG signal rising up. FLAG pin is an open
drain output.
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