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