RT7251A/B
Current Limit vs. Input Voltage
3.0
3.0
Current Limit vs. Input Voltage
2.8
2.8
Current Limit (A)
2.6
Current Limit (A)
RT7251A, V
OUT
= 3.3V
4
6.6
9.2
11.8
14.4
17
2.6
2.4
2.4
2.2
2.2
2.0
2.0
4
6.6
9.2
RT7251B, V
OUT
= 3.3V
11.8
14.4
17
Input Voltage (V)
Input Voltage (V)
Current Limit vs. Temperature
3.0
3.0
Current Limit vs. Temperature
2.8
2.8
Current Limit (A)
Current Limit (A)
RT7251A, V
IN
= 12V, V
OUT
= 3.3V
2.6
2.6
2.4
2.4
2.2
2.2
RT7251B, V
IN
= 12V, V
OUT
= 3.3V
2.0
-50
-25
0
25
50
75
100
125
2.0
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Load Transient Response
RT7251A
Load Transient Response
RT7251B
V
OUT
(200mV/Div)
V
OUT
(100mV/Div)
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 0.3A to 1.5A
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 0.3A to 1.5A
Time (100μs/Div)
Time (100μs/Div)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7251A/B-01 April 2012
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
