RT6251A/B
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
Efficiency vs. Output Current
100
90
Efficiency (%)
Efficiency (%)
70
60
50
40
30
20
10
0
0
0.5
V
IN
= 9V
V
IN
= 12V
V
IN
= 18V
80
70
60
50
40
30
20
V
OUT
= 5V
V
OUT
= 3.3V
V
OUT
= 1.2V
RT6251A, V
OUT
= 3.3V
1
1.5
2
2.5
3
10
0
0
0.5
1
1.5
RT6251A, V
IN
= 12V
2
2.5
3
Output Current (A)
Output Current (A)
Efficiency vs. Output Current
100
90
80
100
90
Efficiency vs. Output Current
Efficiency (%)
60
50
40
30
20
10
0
0
0.5
1
1.5
2
2.5
3
Efficiency (%)
70
V
IN
= 9V
V
IN
= 12V
V
IN
= 18V
80
70
60
50
40
30
20
V
OUT
= 5V
V
OUT
= 3.3V
V
OUT
= 1.2V
RT6251B, V
OUT
= 3.3V
10
0
0
0.5
1
1.5
RT6251B, V
IN
= 12V
2
2.5
3
Output Current (A)
Output Current (A)
Output Voltage vs. Output Current
3.50
3.45
3.37
3.35
Output Voltage vs. Input Voltage
Output Voltage (V)
Output Voltage (V)
3.40
3.35
3.30
3.25
3.20
3.15
RT6251A
3.33
3.31
3.29
3.27
3.25
RT6251B
I
OUT
= 1A
I
OUT
= 2A
I
OUT
= 3A
V
IN
= 12V, V
OUT
= 3.3V
3.10
0
0.5
1
1.5
2
2.5
3
3.23
4
6
8
10
12
14
V
OUT
= 3.3V
16
18
Output Current (A)
Input Voltage (V)
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS6251A/B-00 November 2015
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
