RT7271A
Typical Operating Characteristics
Efficiency vs. Load Current
Efficiency vs. Load Current
100%
1000
100%
1000
90%
900
90%
900
80%
800
80%
VIN = 7.4V
VIN = 12V
VIN = 17V
VIN = 7.4V
VIN = 12V
VIN = 17V
800
70%
700
70%
700
60%
600
60%
600
50%
500
50%
500
40%
400
40%
400
30%
300
30%
300
20%
200
20%
200
10%
100
10%
100
VOUT = 3.3V
VOUT = 1.8V
5 6
0%
00
0%
00
0
1
2
3
4
0
0
4
1
2
3
4
5
6
Load Current (A)
Load Current (A)
Efficiency vs. Load Current
Output Voltage vs. Load Current
100%
1000
1.82
1.82
1.81
1.81
1.80
1.80
1.79
1.79
1.78
90%
900
80%
800
VIN = 7.4V
VIN = 12V
VIN = 17V
70%
700
60%
600
50%
500
440%00
VIN = 17V
VIN = 12V
VIN = 7.4V
300
30%
200
20%
100
10%
VOUT = 1.05V
VOUT = 1.8V
5 6
00
0%
1
2
3
4
5
6
0
1
2
3
4
Load Current (A)
Load Current (A)
Current Limit vs. Input Voltage
Current Limit vs. Temperature
11.0
11.0
10.5
10.0
9.5
10.5
10.0
9.5
9.0
9.0
VIN = 17V
VIN = 12V
VIN = 7.4V
8.5
8.5
8.0
8.0
7.5
7.5
VOUT = 1.05V
16 18 20
VOUT = 1.05V
75 100 125
7.0
7.0
6
8
10
12
14
-50
-25
0
25
50
Input Voltage (V)
Temperature (°C)
Copyright 2013 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS7271A-00 February 2013
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
