AP7173 Datasheet, PDF (8/15 Pages) Diodes Incorporated – 1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START

AP7173
1.5A LOW DROPOUT LINEAR REGULATOR WITH
PROGRAMMABLE SOFT-START
Typical Performance Characteristics (Continued)
At T_A = +25℃, V_IN = V_OUT(TYP) + 0.3V, V_VCC = 5V, I_OUT = 50mA, V_EN = V_IN, C_IN = 1µF, C_VCC = 4.7µF, and C_OUT = 10µF, unless otherwise noted.
V_IN DROPOUT VOLTAGE vs.
(V_VCC-V_OUT) AND TEMPERATURE(T_A)
200
180
160
Iout=0.5A
140
120
100
25^oC
125^oC
80
60
40
20
-40^oC
0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
Vvcc-Vout
Figure 9
V_VCC DROPOUT VOLTAGE vs.
I_OUT AND TEMPERATURE(T_A)
2000
1800
1600
1400
1200
1000
-40^oC
125^oC
25^oC
800
600
0.00
0.25
0.50
0.75
1.00
1.25
1.50
Iout(A)
Figure 10
V_IN PSRR vs. FREQUENCY
90
80
Io=0.1A
70
60
50
Io=1.5A
40
30
Vin=1.8V
Vout=1.2V
20
Vvcc=5V
Css=1nF
10
0
10
100
1000
10000
100000 ₅₀₀₀₀₀
Frequency(Hz)
Figure 11
V_VCC PSRR vs. FREQUENCY
90
80
70
Io=0.1A
60
50
40
Vin=1.8V
30
Vout=1.2V
Vvcc=5V
20
Css=1nF
10
Io=1.5A
0
10
100
1000
10000
100000 1000000
1E7
Frequency(Hz)
Figure 12
V_IN PSRR vs. (V_IN-V_OUT)
90
80 Vout=1.2V
Iout=1.5A
70 _Css=1nF
60
50
40
1KHz
10KHz
100KHz
30
500KHz
20
10
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50
Vin-Vout(V)
Figure 13
LOW-LEVEL PG VOLTAGE vs. CURRENT
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
2
4
6
8
10
12
PG Current(mA)
Figure 14
AP7173 Rev. 4
8 of 15
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MARCH 2008
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