RT7262E
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
0.75
1
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
4
6
8
10
12
14
16
18
20
22
Output Current (A)
Input Voltage (V)
Reference Voltage vs. Temperature
0.84
0.83
1.45
1.40
Output Voltage vs. Output Current
Reference Voltage (V)
Output Voltage (V)
0.82
0.81
0.80
0.79
0.78
0.77
0.76
-50
-25
0
25
50
75
100
125
1.35
1.30
1.25
1.20
1.15
1.10
1.05
V
IN
= 21V
V
IN
= 12V
V
OUT
= 1.22V, I
OUT
= 0A to 2A
1.00
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, I
OUT
= 1A
400
4
6
8
10
12
14
16
18
20
22
300
-50
-25
0
V
IN
= 12V, V
OUT
= 1.22V, I
OUT
= 1A
25
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
DS7262E-00
November 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
