RT7262A
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
Reference Voltage vs. Input Voltage
0.825
0.820
Reference Voltage (V)
1.25
1.5
1.75
2
80
Efficiency (%)
70
60
50
40
30
20
10
0
0
0.25
0.5
0.815
0.810
0.805
0.800
0.795
0.790
V
IN
= 12V
V
IN
= 21V
V
OUT
= 1.22V, I
OUT
= 0A to 2A
0.785
0.75
1
4
6
8
10
12
14
16
18
20
22
Output Current (A)
Input Voltage (V)
Reference Voltage vs. Temperature
0.84
0.83
Output Voltage vs. Output Current
1.26
1.25
Reference Voltage (V)
0.81
0.80
0.79
0.78
0.77
0.76
-50
-25
0
25
50
75
100
125
Output Voltage (V)
0.82
1.24
1.23
1.22
1.21
1.20
1.19
V
IN
= 21V
V
IN
= 12V
V
OUT
= 1.22V, I
OUT
= 0A to 2A
1.18
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2
Temperature (°C)
Output Current (A)
Switching Frequency vs. Input Voltage
550
650
Switching Frequency vs. Temperature
Switching Frequency (kHz)
1
600
550
500
450
400
350
Switching Frequency (kHz)
1
525
500
475
450
425
V
OUT
= 1.22V
400
4
6
8
10
12
14
16
18
20
22
300
-50
-25
0
25
V
IN
= 12V, V
OUT
= 1.22V
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.
www.richtek.com
8
DS7262A-01
September 2012