NCP729
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE NOISE (mV/rtHz)
OUTPUT VOLTAGE NOISE (mV/rtHz)
10
V
IN
= 2.0 V,
V
OUT
= 0.8 V,
C
IN
= C
OUT
= 1
mF,
T
A
= 25°C
I
OUT
= 10 mA
I
OUT
= 1 mA
I
OUT
= 200 mA
10
V
IN
= 3.6 V,
V
OUT
= 3.3 V,
C
IN
= C
OUT
= 1
mF,
T
A
= 25°C
I
OUT
= 10 mA
I
OUT
= 1 mA
I
OUT
= 200 mA
1
1
0.1
0.1
0.01
0.01
0.001
10
100
1K
10 K
100 K
1M
10 M
0.001
10
100
1K
10 K
100 K
1M
10 M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 3. Output Voltage Noise,
V
OUT
= 0.8 V, C
OUT
= 1
mF
80
70
60
PSRR (dB)
50
40
30
20
10
0
10
V
IN
= 2.3 V,
V
OUT
= 1.8 V,
C
IN
= none,
C
OUT
= 1
mF,
T
A
= 25°C
100
1K
I
OUT
= 100 mA
I
OUT
= 200 mA
I
OUT
= 1 mA
I
OUT
= 10 mA
PSRR (dB)
90
80
70
60
50
40
30
20
10
0
10
Figure 4. Output Voltage Noise,
V
OUT
= 3.3 V, C
OUT
= 1
mF
I
OUT
= 1 mA
I
OUT
= 10 mA
V
IN
= 3.3 V,
V
OUT
= 2.8 V,
C
IN
= none,
C
OUT
= 1
mF,
T
A
= 25°C
100
1K
I
OUT
= 100 mA
I
OUT
= 200 mA
10 K
100 K
1M
10 M
10 K
100 K
1M
10 M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 5. PSRR, V
OUT
= 1.8 V, C
OUT
= 1
mF
90
80
70
PSRR (dB)
60
50
40
30
20
10
0
10
V
IN
= 3.8 V,
V
OUT
= 3.3 V,
C
IN
= none,
C
OUT
= 1
mF,
T
A
= 25°C
100
1K
I
OUT
= 100 mA
I
OUT
= 200 mA
I
OUT
= 1 mA
I
OUT
= 10 mA
PSRR (dB)
90
80
70
60
50
40
30
20
10
0
10
Figure 6. PSRR, V
OUT
= 2.8 V, C
OUT
= 1
mF
I
OUT
= 1 mA
I
OUT
= 10 mA
V
IN
= 3.8 V,
V
OUT
= 3.3 V,
C
IN
= none,
C
OUT
= 4.7
mF,
T
A
= 25°C
100
I
OUT
= 100 mA
I
OUT
= 200 mA
10 K
100 K
1M
10 M
1K
10 K
100 K
1M
10 M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 7. PSRR, V
OUT
= 3.3 V, C
OUT
= 1
mF
Figure 8. PSRR, V
OUT
= 3.3 V, C
OUT
= 4.7
mF
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