MCP1727
NOTE:
Unless otherwise indicated V
OUT
= 1.8V (Adjustable), V
IN
= 2.8V, 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
+ 0.6V, RPWRGD = 10 kΩ To V
IN
.
0.40
0.35
Dropout Voltage (V)
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
250
500
750
1000
1250
1500
Load Current (mA)
V
OUT
= 5.0V
Temperature = 25°C
V
OUT
= 2.5V
10
V
R
=2.5V, V
IN
=3.3V
C
OUT
=1
μF
ceramic X7R
C
IN
=10
μF
ceramic
Noise (µV/
√
Hz)
1
0.1
0.01
0.001
0.01
V
R
=0.8V, V
IN
=2.3V
I
OUT
=200 mA
0.1
1
10
Frequency (kHz)
100
1000
FIGURE 2-19:
Current.
0.45
Dropout Voltage (V)
0.40
Dropout Voltage vs. Load
FIGURE 2-22:
Output Noise Voltage
Density vs. Frequency.
0
-10
-20
PSRR (dB)
-30
-40
-50
-60
-70
-80
0.01
V
R
=1.2V Adj
C
OUT
=10
μF
ceramic X7R
V
IN
=3.1V
C
IN
=0
μF
I
OUT
=10 mA
I
OUT
= 1.5A
0.35
0.30
V
OUT
= 5.0V
V
OUT
= 2.5V
0.25
-45
-20
5
30
55
80
105
130
Temperature (°C)
0.1
1
10
Frequency (kHz)
100
1000
FIGURE 2-20:
Temperature.
Dropout Voltage vs.
FIGURE 2-23:
Power Supply Ripple
Rejection (PSRR) vs. Frequency (V
OUT
= 1.2V
Adj.).
0
-10
-20
PSRR (dB)
-30
-40
-50
-60
-70
-80
0.01
0.1
V
R
=1.2V Adj
C
OUT
=22
μF
ceramic X7R
V
IN
=3.1V
C
IN
=0
μF
I
OUT
=10 mA
3.00
Short Circuit Current (A)
2.50
2.00
1.50
1.00
0.50
0.00
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
V
OUT
= 2.5V
Temperature = 25°C
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 (V
OUT
= 1.2V
Adj.).
©
2007 Microchip Technology Inc.
DS21999B-page 11
MICROCHIP [ MICROCHIP TECHNOLOGY ]
