TM
MP2101 – 1.6MHz SYNCHRONOUS STEP-DOWN PLUS 200mA LDO
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 3.6V, VOUT1 = 1.8V, VOUT2 = 1.2V, CIN1 = 4.7µF, CIN2 = 1µF, CO1 = 10µF, CO2 = 1µF, L = 2.2µH,
TA = +25°C, unless otherwise noted.
Output Voltage vs
Load Current
Output Voltage vs
Load Current
Output Voltage vs
Load Current
V
= 1.5V
V
= 2.5V
OUT2
OUT2
1.56
1.54
1.52
1.50
1.48
2.53
2.52
2.51
2.50
2.49
1.206
1.205
1.204
1.203
1.202
V
=3.3V
IN
V
=3.3V
IN
V
=1.8V
80
IN
LDO
LDO
LDO
0
40
80
120 160 200
0
40
80
120 160 200
0
40
120 160 200
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
PSRR vs
Frequency
Frequency vs
Input Voltage
Feedback Voltage vs
Temperature
100
90
80
70
60
50
40
30
20
10
0
1.8
1.7
1.6
1.5
1.4
1.3
0.62
0.61
0.60
0.59
0.58
FB2
FB1
10
100
1K
10K 100K 1M
4.0
4.4
4.8
5.2
5.6
6.0
-40 -10 +20 +50 +80 +110 +140
FREQUENCY (Hz)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Enable Turn On
Enable Turn Off
LDO Dropout vs
Load Current
EN = 3.6V, I
= 0.3A,
= 0.1A Resistive Load
EN = 3.6V, I
= 0.3A,
OUT1
OUT1
= 0.1A Resistive Load
I
I
OUT2
OUT2
0.5
0.4
0.3
0.2
0.1
0.0
EN
5V/div.
EN
2V/div.
PWROK
PWROK
5V/div.
2V/div.
V
OUT1
1V/div.
V
OUT1
1V/div.
V
OUT2
1V/div.
V
OUT2
1V/div.
0
50
100 150 200 250
LOAD CURRENT (mA)
MP2101 Rev. 1.0
8/18/2006
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