NCV8508(2004) 데이터 시트보기 (PDF) - ON Semiconductor
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NCV8508 Datasheet PDF : 12 Pages
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NCV8508
TYPICAL PERFORMANCE CHARACTERISTICS
1.0
0.9
0.8
+125°C
0.7
0.6
+25°C
0.5
0.4
−40°C
0.3
0.2
0.1
0.0
0 25 50 75 100 125 150 175 200 225 250
Output Current (mA)
Figure 12. Dropout Voltage vs Output Current
5.10
5.05
5.00
4.95
VIN = 14 V
IOUT = 5.0 mA
4.90
−40 −25 −10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Figure 13. Output Voltage vs Temperature
160
140
120
100
80
60
40
RL = 33 W
20
0
1.0 1.5 2.0
2.5 3.0 3.5 4.0
VIN (V)
4.5 5.0 5.5 6.0
Figure 14. Output Current vs Input Voltage
1000
100
10
1
0
Unstable Region
Stable Region
C = 1.0 mF, 10 mF
5 10 15 20 25 30 35 40 45
Output Current (mA)
Figure 15. Output Capacitor ESR
DEFINITION OF TERMS
Dropout Voltage: The input−output voltage differential at
which the circuit ceases to regulate against further reduction
in input voltage. Measured when the output voltage has
dropped 100 mV from the nominal value obtained at 14 V
input, dropout voltage is dependent upon load current and
junction temperature.
Input Voltage: The DC voltage applied to the input
terminals with respect to ground.
Line Regulation: The change in output voltage for a
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Load Regulation: The change in output voltage for a
change in load current at constant chip temperature.
Quiescent Current: The part of the positive input current
that does not contribute to the positive load current. The
regulator ground lead current.
Ripple Rejection: The ratio of the peak−to−peak input
ripple voltage to the peak−to−peak output ripple voltage.
Current Limit: Peak current that can be delivered to the
output.
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