RT7256B
Current Limit vs. Temperature
8
7
Current Limit vs. Input Voltage
8
7
Current Limit (A)
Current Limit (A)
V
IN
= 12V, V
OUT
= 3.3V
6
5
4
3
2
-50
-25
0
25
50
75
100
125
6
5
4
3
V
OUT
= 3.3V
2
4
6
8
10
12
14
16
18
Temperature (°C)
Input Voltage (V)
Load Transient Response
V
OUT
(100mV/Div)
V
OUT
(100mV/Div)
Load Transient Response
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 1A to 3A
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 2A to 3A
Time (100μs/Div)
Time (100μs/Div)
Ripple Voltage
V
OUT
(5mV/Div)
V
OUT
(5mV/Div)
Ripple Voltage
V
LX
(10V/Div)
V
LX
(10V/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 1A
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A
Time (250ns/Div)
Time (250ns/Div)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7256B-00
February 2012
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
