Datasheet KA278RXXC (ON Semiconductor) - 9

120 15.0 100
RL= Quiescent current Iq(mA) 12.5
8 Output voltage Vo(V) (KA278R12C) 10.0
RL= 6Ω 7.5
5.0 80
60
40
20
RL= ∞ 2.5
0 0
5 0 10 15 20 0 5 25 10 15 20 Input voltage Vin(V) Input voltage Vin (V)
Figure 22. Quiescent Current vs. Input Voltage 15.0 Output voltage Vo(V) Output voltage Vo(V) Figure 21. Output Voltage vs. Input Voltage 12.5
10.0
7.5
5.0 12.04
12.02
12.00
11.98 11.96 2.5 11.94 0
0 0.5 1 1.5 2 2.5 11.92
-25 3 0 Disable voltage Vdis (V) Figure 23. Output Voltage vs. Disable Voltage 125 0.70
0.65 8
Drop out voltage Vdrop [V] Quiescent current Iq(mA) 100 Figure 24. Output Voltage vs. Temperature (Tj) 10 6 4 2 0 75
25
50
TEMPERATURE Tj(oC) -25 0 25 50 75 100 0.55
0.50 125 2.0A 0.45
0.40
0.35
0.30
-25 0 25 50 75 100 125 Junction Temp Tj [℃] Junction temperature Tj(oC) Figure 26. Dropout Voltage vs. Junction Temperature 25. Quiescent Current vs. Temperature (Tj) © 2004 Fairchild Semiconductor Corporation
KA278RXXC-Series Rev. 1.1.0 0.60 www.fairchildsemi.com
8 KA278RXXC-Series — 2 A Output Low Dropout Voltage Regulators Typical Performance Characteristics