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NCP1081 Datasheet(PDF) 10 Page - ON Semiconductor

Part No. NCP1081
Description  Integrated High Power PoE-PD Interface & DC-DC Converter Contr
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1081 Datasheet(HTML) 10 Page - ON Semiconductor

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NCP1081
http://onsemi.com
10
Table 3. OPERATING CONDITIONS
Symbol
Parameter
Min.
Typ.
Max.
Units
Conditions
CURRENT CONSUMPTION
IvportP1
VPORTP internal current consumption
(Note 12)
2.5
3.5
mA
DC−DC controller off
IvportP2
VPORTP internal current consumption
(Note 13)
4.7
6.5
mA
DC−DC controller on
THERMAL SHUTDOWN
TSD
Thermal shutdown threshold
150
°C Tj
Tj = junction temperature
Thyst
Thermal hysteresis
15
°C Tj
Tj = junction temperature
THERMAL RATINGS
Ta
Ambient temperature
−40
85
°C
Tj
Junction temperature
125
150
°C
°C
Parametric values guaranteed
Max 1000 hours
12.Conditions
a. No current through the pass−switch
b. DC−DC controller inactive (SS shorted to RTN)
c. No external load on VDDH and VDDL
d. VPORTP = 57 V
13.Conditions
a. No current through the pass−switch
b. Oscillator frequency = 100 kHz
c. No external load on VDDH and VDDL
d. Aux winding not used
e. 2 nF on GATE, DC−DC controller enabled
f. VPORTP = 57 V


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