RT7297A
Current Limit vs. Temperature
7.0
6.5
4.4
4.3
4.2
Input Voltage vs. Temperature
Input Voltage (V)
Current Limit (A)
6.0
5.5
5.0
4.5
4.0
3.5
4.1
4.0
3.9
3.8
3.7
3.6
Rising
Falling
V
IN
= 12V, V
OUT
= 3.3V
3.0
-50
-25
0
25
50
75
100
125
3.5
3.4
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Load Transient Response
Load Transient Response
V
OUT
(100mV/Div)
V
OUT
(100mV/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 0A to 3A
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 1.5A to 3A
Time (100μs/Div)
Time (100μs/Div)
Switching
V
OUT
(10mV/Div)
V
OUT
(10mV/Div)
Switching
V
SW
(10V/Div)
V
SW
(10V/Div)
I
L
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 1.5A
I
L
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A
Time (2.5μs/Div)
Time (2.5μs/Div)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7297A-03
September 2012
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
