RT7231/32/33/34
Switching Frequency vs. Input Voltage
700
700
Switching Frequency vs. Temperature
Switching Frequency (kHz)
1
690
680
670
660
650
640
630
620
610
600
Switching Frequency (kHz)
1
690
680
670
660
650
640
630
620
610
600
4
6
8
10
12
14
16
18
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Current Limit vs. Temperature
7.0
6.5
7.0
6.5
Current Limit vs. Input Voltage
Current Limit (A)
6.0
5.5
5.0
4.5
Current Limit (A)
V
IN
= 12V, V
OUT
= 1.05V
-50
-25
0
25
50
75
100
125
6.0
5.5
5.0
4.5
4.0
4
6
8
10
12
14
16
18
20
4.0
Temperature (°C)
Input Voltage (V)
Load Transient Response
RT7231/33
Load Transient Response
RT7231/32/33/34
V
OUT
(20mV/Div)
V
OUT
(5mV/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 1.05V, I
OUT
= 0A to 4A
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 1.05V, I
OUT
= 1A to 4A
Time (100μs/Div)
Time (100μs/Div)
Copyright
©
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7231/32/33/34-00
March 2013
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
