MC33269DR2-50G Datasheet, PDF (4/12 Pages) ON Semiconductor – 800 mA, Adjustable Output,Low Dropout Voltage Regulator

MC33269, NCV33269
1.5
1.3
1.1 T_A = 25C
0.9
T_A = -40C
T_A = 125C
0.7
0.5
0
200
400
600
800
1000
I_O, OUTPUT LOAD CURRENT (mA)
Figure 2. Dropout Voltage versus
Output Load Current
C_in = 10 mF
C_O = 10 mF Tantalum
V_in = V_O + 3.0 V
Preload = 0.1 A
100
mV/Div
0.5 A
0A
20 ms/DIV
Figure 3. Transient Load Regulation
1100
I_O = 800 mA
1060
1020
980
940
900
-55
-25
0
25
50
75 100 125
T_A, AMBIENT TEMPERATURE (C)
Figure 4. Dropout Voltage
versus Temperature
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
T_A = 25C
MC33269D-XX
L = 25 mm Copper
2.0 4.0 6.0 8.0 10 12 14 16
INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 5. MC33269−XX Output DC Current versus
Input−Output Differential Voltage
70
V_O = 3.3 V or 5.0 V
60
V_O = 12 V
50
40
V_in = V_O + 3.0 V
I_L = 800 mA
T_A = 25C
30
20
0.1
1.0
10
100
f, FREQUENCY (kHz)
Figure 6. MC33269 Ripple Rejection
versus Frequency
70
60
50
V_in = 8.0 V
V_out = 5.0 V
40
I_L = 800 mA
C_Adj = 22 mF
T_A = 25C
30
20
0.1
1.0
10
100
f, FREQUENCY (kHz)
Figure 7. MC33269−ADJ Ripple Rejection
versus Frequency
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