TM
MP2101 – 1.6MHz SYNCHRONOUS STEP-DOWN PLUS 200mA LDO
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
V
IN
= 3.6V, V
OUT1
= 1.8V, V
OUT2
= 1.2V, C
IN1
= 4.7µF, C
IN2
= 1µF, C
O1
= 10µF, C
O2
= 1µF, L = 2.2µH,
T
A
= +25°C, unless otherwise noted.
Output Voltage vs
Load Current
1.56
V
OUT2
= 1.5V
2.53
Output Voltage vs
Load Current
V
OUT2
= 2.5V
1.206
Output Voltage vs
Load Current
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.54
OUTPUT VOLTAGE (V)
2.52
1.205
1.52
V
IN
=3.3V
1.50
LDO
1.48
0
40
80
120 160
LOAD CURRENT (mA)
200
2.51
V
IN
=3.3V
1.204
V
IN
=1.8V
LDO
1.202
0
40
80
120 160
LOAD CURRENT (mA)
200
2.50
LDO
2.49
0
40
80
120 160
LOAD CURRENT (mA)
200
1.203
PSRR vs
Frequency
100
90
80
70
1.8
1.7
1.6
1.5
1.4
Frequency vs
Input Voltage
0.62
Feedback Voltage vs
Temperature
FEEDBACK VOLTAGE (V)
FREQUENCY (MHz)
0.61
PSRR (dB)
60
50
40
30
20
10
0
10
100
1K
10K 100K
FREQUENCY (Hz)
1M
0.60
FB2
FB1
0.59
1.3
4.0
4.4
4.8
5.2
5.6
INPUT VOLTAGE (V)
6.0
0.58
-40
-10 +20 +50 +80 +110 +140
TEMPERATURE (°C)
LDO Dropout vs
Load Current
0.5
Enable Turn On
EN = 3.6V, I
OUT1
= 0.3A,
I
OUT2
= 0.1A Resistive Load
EN
5V/div.
PWROK
5V/div.
Enable Turn Off
EN = 3.6V, I
OUT1
= 0.3A,
I
OUT2
= 0.1A Resistive Load
DROPOUT VOLTAGE (V)
0.4
0.3
0.2
0.1
0.0
EN
2V/div.
PWROK
2V/div.
V
OUT1
1V/div.
V
OUT2
1V/div.
V
OUT1
1V/div.
V
OUT2
1V/div.
0
50
100 150 200
LOAD CURRENT (mA)
250
MP2101 Rev. 1.0
8/18/2006
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5
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