RT7258
Typical Operating Characteristics
Efficiency vs. Load Current
100
90
80
Output Voltage vs. Input Voltage
3.33
3.32
Efficiency (%)
70
60
50
40
30
20
10
0
0
2
Output Voltage (V)
V
IN
= 10V
V
IN
= 12V
V
IN
= 24V
3.31
3.30
3.29
3.28
V
OUT
= 3.3V
3.27
4
6
8
V
IN
= 4.5V to 24V, V
OUT
= 3.3V, I
OUT
= 0A
4
6
8
10
12
14
16
18
20
22
24
Load Current (A)
Input Voltage (V)
Output Voltage vs. Temperature
3.40
3.38
3.36
3.35
3.34
3.33
Output Voltage vs. Load Current
Output Voltage (V)
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
-50
-25
0
25
50
75
100
125
Output Voltage (V)
3.32
3.31
3.30
3.29
3.28
3.27
V
IN
= 10V
V
IN
= 12V
V
IN
= 24V
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 0A
3.26
3.25
0
1
2
3
4
5
6
V
OUT
= 3.3V
7
8
Temperature (°C)
Load Current (A)
Switching Frequency vs. Input Voltage
650
650
Switching Frequency vs. Temperature
Switching Frequency (kHz)
1
640
630
620
610
600
590
580
570
560
550
Switching Frequency (kHz)
1
640
630
620
610
600
590
580
570
560
550
4
6
8
10
12
14
16
18
20
22
24
V
OUT
= 3.3V, I
OUT
= 0A
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 0A
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS7258-00 January 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
