RT7275/76
Typical Operating Characteristics
Efficiency vs. Load Current
100
90
80
Efficiency vs. Load Current
100
90
80
RT7275
RT7276
Efficiency (%)
Efficiency (%)
70
60
50
40
30
20
10
0
0.001
0.01
0.1
V
OUT
= 5V
V
OUT
= 2.5V
V
OUT
= 1.05V
70
60
50
40
30
20
V
OUT
= 5V
V
OUT
= 2.5V
V
OUT
= 1.05V
V
IN
= 12V
1
10
10
0
0.001
0.01
0.1
1
V
IN
= 12V
10
Load Current (A)
Load Current (A)
Output Voltage vs. Load Current
1.048
Output Voltage vs. Load Current
1.09
1.08
RT7275
V
IN
= 17V
V
IN
= 12V
RT7276
1.046
Output Voltage (V)
Output Voltage (V)
1.07
1.06
1.05
1.04
1.03
1.02
V
IN
= 17V
V
IN
= 12V
1.044
1.042
V
IN
= 5V
V
IN
= 5V
1.040
V
OUT
= 1.05V
1.038
0
0.5
1
1.5
2
2.5
3
1.01
0
0.5
1
1.5
2
V
OUT
= 1.05V
2.5
3
Load Current (A)
Load Current (A)
Switching Frequency vs. Load Current
800
Switching Frequency vs. Output Current
900
Switching Frequency (kHz)
1
RT7275
RT7276
Switching Frequency (kHz)
1
800
700
600
500
400
300
200
100
0
0
0.5
1
1.5
2
750
V
IN
= 17V
V
IN
= 12V
V
IN
= 5V
700
V
IN
= 5V
V
IN
= 12V
V
IN
= 17V
650
V
OUT
= 1.05V
600
0
0.5
1
1.5
2
2.5
3
V
OUT
= 1.05V
2.5
3
Output Current (A)
Output Current (A)
Copyright
©
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7275/76-00
January 2013
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
