RT8025
Typical Operating Characteristics
Efficiency vs. Load Current
100
90
Load Regulation
1.810
1.805
V
IN
= 3.3V
Load Regulation (V)
80
Efficiency (%)
70
60
50
40
30
20
10
V
IN
= 5V
1.800
1.795
1.790
1.785
1.780
1.775
V
IN
= 5.5V
V
IN
= 3.3V
V
IN
= 2.5V
V
OUT
= 1.8V
0.11
0.21
0.31
0.41
0.51
0.61
0
0.01
1.770
V
OUT
= 1.8V
0.1
0.15
0.2
0.25
0.3
0.35
0.4
Load Current (A)
Load Current (A)
Current Limit vs. Input Voltage
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
1.24
1.26
Frequency vs. Input Voltage
Frequency (MHz)
V
OUT
= 1.8V
2.5
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
Current Limit (A)
1.22
1.20
1.18
1.16
1.14
V
OUT
= 1.8V
2.5
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
Input Voltage (V)
Input Voltage (V)
Frequency vs. Temperature
1.26
1.24
Reference vs. Input Voltage
0.60
0.58
0.56
V
OUT
= 1.8V
Frequency (MHz)
1.22
1.20
1.18
1.16
1.14
1.12
Reference (V)
V
IN
= 3.3V, V
OUT
= 1.8V
-50
-25
0
25
50
75
100
125
0.54
0.52
0.50
0.48
0.46
0.44
0.42
0.40
2.5
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
1.10
Temperature
(°C)
Input Voltage (V)
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6
DS8025-02 March 2011