MCP1726
NOTE:
Unless otherwise indicated, V
IN
= V
OUT
+ 0.5V, I
OUT
= 1 mA and T
A
= +25擄C.
250
225
200
175
150
125
100
75
50
25
0
0
200
10
V
OUT
=2.5V (Adj)
I
OUT
= 200 mA
Dropout Voltage (mV)
Noise (碌V Hz)
V
OUT
=5.0V
V
OUT
=2.5V
1
V
OUT
=0.8V (Fixed)
I
OUT
= 100 mA
0.1
C
OUT
=1 碌F
C
IN
= 10 碌F
400
600
800
1000
0.01
0.01
0.1
1
10
100
1000
Load Current (mA)
Frequency (kHz)
FIGURE 2-19:
Current.
270
260
250
240
230
220
210
200
190
180
-40
-25
Dropout Voltage vs. Load
FIGURE 2-22:
Output Noise Voltage
Density vs. Frequency.
80
70
60
PSRR (dB)
I
OUT
= 1A
Dropout Voltage (mV)
V
OUT
= 1.2V
V
IN
= 2.5V
V
OUT
=5.0V
V
OUT
=3.3V
50
40
30
20
C
OUT
=10 碌F
C
IN
= 0 碌F
I
OUT
= 100 mA
V
OUT
=2.5V
10
20
35
50
65
80
95
110
125
0
0.01
-10
5
0.1
1
10
100
1000
Temperature (擄C)
Frequency (kHz)
FIGURE 2-20:
Temperature.
Dropout Voltage vs.
FIGURE 2-23:
Power Supply Ripple
Rejection (PSRR) vs. Frequency (V
OUT
= 1.2V
Adj.).
90
80
70
PSRR (dB)
60
50
40
30
20
10
C
OUT
=22 碌F
C
IN
= 0 碌F
I
OUT
= 100 mA
1.7
Short Circuit Current (A)
1.6
1.5
1.4
1.3
1.2
1.1
1.0
2.3 2.6 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5.0 5.3 5.6 5.9
Input Voltage (V)
V
OUT
=1.2V (Fixed)
V
OUT
= 1.2V
V
IN
= 2.5V
0
0.01
0.1
1
10
100
1000
Frequency (kHz)
FIGURE 2-21:
Input Voltage.
Short Circuit Current vs.
FIGURE 2-24:
Power Supply Ripple
Rejection (PSRR) vs. Frequency (V
OUT
= 1.2V
Adj.).
DS21936B-page 10
漏
2005 Microchip Technology Inc.