Datasheet

ADP2125
Rev. A | Page 7 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 3.6 V, f
EXTCLK
= 10 MHz, V
OUT
= 1.26 V, L = 1.8 µH (700 mA, 0603 package, LQM18PN1R8NC0), C
IN
= 2.2 µF (6.3 V, 0402 package,
X5R, GRM155R60J225ME15), C
OUT
= 4.7 µF (4 V, 0402 package, X5R, GRM155R60G475ME47), and T
A
= 25°C, unless otherwise noted.
100
90
80
70
60
50
40
30
20
10
0
1 10 100 1000
EFFICIENCY (%)
LOAD CURRENT (mA)
V
IN
= 2.1V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.8V
V
IN
= 5.5V
08774-104
Figure 4. Efficiency vs. Load Current
90
85
80
75
70
65
60
2.1 5.14.64.13.63.12.6
EFFICIENCY (%)
INPUT VOLTAGE (V)
I
LOAD
= 100mA
I
LOAD
= 250mA
I
LOAD
= 500mA
08774-105
Figure 5. Efficiency vs. Input Voltage
11
10
9
8
7
6
5
4
2.1 5.14.64.13.63.12.6
QUIESCENT CURRENT (mA)
INPUT VOLTAGE (V)
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
08774-106
Figure 6. Quiescent Current vs. Input Voltage
1.263
1.262
1.261
1.260
1.259
1.258
1.257
1 10 100 1000
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
V
IN
= 2.1V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.8V
V
IN
= 5.5V
08774-107
Figure 7. Output Voltage Accuracy
1.262
1.261
1.260
1.259
1.258
1.257
1.256
1.255
1 10 100 1000
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
08774-108
Figure 8. Output Voltage Accuracy over Temperature
2.1 5.14.64.13.63.12.6
0.9
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
SHUTDOWN CURRENT (µA)
INPUT VOLTAGE (V)
T
A
= –40°C
T
A
= +25°C
T
A
= +85°C
SW = OPEN
08774-109
Figure 9. Shutdown Current vs. Input Voltage