RT7247B
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
3.40
3.35
Output Voltage vs. Input Voltage
Efficiency (%)
70
60
50
40
30
20
10
0
0.01
0.1
Output Voltage (V)
V
IN
= 5V
V
IN
= 12V
V
IN
= 17V
3.30
3.25
3.20
3.15
V
OUT
= 3.3V
3.10
V
OUT
= 3.3V, I
OUT
= 0A
10
4
6.6
9.2
11.8
14.4
17
1
Output Current (A)
Input Voltage (V)
Output Voltage vs. Temperature
3.40
3.35
3.40
3.35
Output Voltage vs. Output Current
Output Voltage (V)
3.30
3.25
3.20
3.15
Output Voltage (V)
3.30
3.25
3.20
3.15
V
IN
= 12V
V
IN
= 17V
V
IN
= 12V, V
OUT
= 3.3V
3.10
-50
-25
0
25
50
75
100
125
3.10
0.0
0.4
0.8
1.2
V
OUT
= 3.3V
1.6
2.0
Temperature (°C)
Output Current (A)
Switching Frequency vs. Input Voltage
1.40
1.40
Switching Frequency vs. Temperature
Switching Frequency (MHz)
1
1.35
1.30
1.25
1.20
1.15
1.10
1.05
Switching Frequency (MHz)
1
1.35
1.30
1.25
1.20
1.15
1.10
1.05
V
IN
= 12V, V
OUT
= 3.3V
V
IN
= 8V, V
OUT
= 1.2V
V
OUT
= 3.3V, I
OUT
= 0.3A
1.00
4
6.6
9.2
11.8
14.4
17
1.00
-50
-25
0
25
50
75
I
OUT
= 0.3A
100
125
Input voltage (V)
Temperature (°C)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7247B-01
September 2012
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
