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