RT7247C
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
Output Voltage vs. Input Voltage
3.34
3.33
Efficiency (%)
70
60
50
40
30
20
10
0
0
Output Voltage (V)
V
OUT
= 3.3V
V
IN
= 4.5V
V
IN
= 12V
V
IN
= 17V
3.32
3.31
3.30
3.29
3.28
3.27
V
IN
= 4.5V to 17V
3.26
2
0.5
1
1.5
4
6
8
10
12
14
16
18
Output Current (A)
Input Voltage (V)
Output Voltage vs. Temperature
3.34
3.33
Output Voltage vs. Output Current
3.40
3.38
Output Voltage (V)
3.32
3.31
3.30
3.29
3.28
3.27
Output Voltage (V)
3.36
3.34
3.32
3.30
3.28
3.26
3.24
V
IN
= 12V
V
IN
= 17V
V
IN
= 12V, V
OUT
= 3.3V
3.26
-50
-25
0
25
50
75
100
125
3.22
3.20
0
0.25
0.5
0.75
1
1.25
V
OUT
= 3.3V
1.5
1.75
2
Temperature (°C)
Output Current (A)
Switching Frequency vs. Input Voltage
820
800
Switching Frequency vs. Temperature
Switching Frequency (kHz)
1
790
780
770
760
750
740
730
Switcing Frequency (kHz)1
810
800
790
780
770
760
750
V
IN
= 17V
V
IN
= 12V
V
IN
= 4.5V
V
IN
= 4.5V to 17V, V
OUT
= 3.3V, I
OUT
= 0A
740
4
6
8
10
12
14
16
18
720
-50
-25
0
25
V
OUT
= 3.3V, I
OUT
= 0A
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.
DS7247C-02
September 2012
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
