MCP1825/MCP1825S
Note: Unless otherwise indicated, C OUT = 4.7 μF Ceramic (X7R), C IN = 4.7 μF Ceramic (X7R), I OUT = 1 mA,
Temperature = +25°C, V IN = V OUT + 0.5V, Fixed output.
0.30
0.25
10
V R =2.5V, V IN =3.3V
C OUT =1 μ F cer
C IN =10 μ F cer
0.20
0.15
0.10
V OUT = 5.0V
V OUT = 2.5V
1
0.1
V R =0.8V, V IN =2.3V
I OUT =200 mA
0.05
0.00
0.01
0
100
200
300
400
500
0.01
0.1
1 10
100
1000
Load Current (mA)
Frequency (kHz)
FIGURE 2-19:
Dropout Voltage vs. Load
FIGURE 2-22:
Output Noise Voltage
Current.
Density vs. Frequency.
0.30
0.28
I OUT = 500 mA
0.0
-10.0
0.26
0.24
V OUT = 5.0V
-20.0
-30.0
-40.0
V R =1.2V Adj
0.22
0.20
0.18
-45
V OUT = 2.5V
-20 5
30
55
80
105
130
-50.0
-60.0
-70.0
-80.0
0.01
0.1
C OUT =10 μ F ceramic X7R
V IN =2.5V
C IN =0 μ F
I OUT =10 mA
1 10 100
1000
Temperature (°C)
Frequency (kHz)
FIGURE 2-20:
Dropout Voltage vs.
FIGURE 2-23:
Power Supply Ripple
Temperature.
Rejection (PSRR) vs. Frequency (Adj.).
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
V OUT = 2.5V
0.0
-10.0
-20.0
-30.0
-40.0
-50.0
-60.0
-70.0
-80.0
-90.0
V R =2.5V (Fixed)
C OUT =22 μ F ceramic X7R
V IN =3.3V
C IN =0 μ F
I OUT =10 mA
0.00
1.00
2.00
3.00
4.00
5.00
6.00
0.01
0.1
1 10
100
1000
Input Voltage (V)
Frequency (kHz)
FIGURE 2-21:
Short Circuit Current vs.
FIGURE 2-24:
Power Supply Ripple
Input Voltage.
DS22056B-page 14
Rejection (PSRR) vs. Frequency.
? 2008 Microchip Technology Inc.
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