RT8272
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
70
Reference Voltage vs. Input Voltage
0.925
0.924
V
IN
= 12V
V
IN
= 24V
Reference Voltage (V)
0.923
0.922
0.921
0.920
0.919
0.918
0.917
0.916
0.915
Efficiency (%)
60
50
40
30
20
10
0
0
0.5
1
1.5
2
2.5
3
V
OUT
= 3.3V
4
6
8
10
12
14
16
18
20
22
24
Output Current (A)
Input Voltage (V)
Reference Voltage vs. Temperature
0.94
0.935
3.350
3.345
Output Voltage vs. Output Current
Reference Voltage (V)
0.93
0.925
0.92
0.915
0.91
Output Voltage (V)
3.340
3.335
3.330
3.325
3.320
3.315
3.310
0.905
V
IN
= 12V
0.9
-50
-25
0
25
50
75
100
125
3.305
3.300
0
0.5
1
1.5
2
V
IN
= 12V
2.5
3
Temperature (°C)
Output Current (A)
Frequency vs. Input Voltage
1.23
1.22
Frequency vs. Temperature
1.30
1.25
Frequency (MHz)1
Frequency (MHz)1
V
OUT
= 3.3V, I
OUT
= 0.3A
1.21
1.20
1.19
1.18
1.17
4
6
8
10
12
14
16
18
20
22
24
1.20
1.15
1.10
1.05
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 0.3A
1.00
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
DS8272-02 March 2011
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
