RT7266
Shutdown Current vs. Temperature
10
9
Quiescent Current vs. Temperature
0.8
0.8
V
EN
= 0V
Shutdown Current (µA)1
8
7
6
5
4
3
2
1
0
-50
-25
0
25
50
75
100
125
Quiescent Current (mA)
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
-50
-25
0
25
50
75
100
125
V
IN
= 17V
V
IN
= 12V
V
IN
= 4.5V
V
IN
= 17V
V
IN
= 12V
V
IN
= 4.5V
V
EN
= 3V, V
FB
= 1V
Temperature (°C)
Temperature (°C)
Current Limit vs. Input Voltage
8
7
Current Limit vs. Temperature
8
7
Current Limit (A)
5
4
3
2
1
Current Limit (A)
6
6
5
4
3
2
1
V
IN
= 17V
V
IN
= 12V
V
IN
= 4.5V
V
OUT
= 0V
0
4
6
8
10
12
14
16
18
V
OUT
= 0V
0
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Load Transient Response
Output Voltage Ripple
V
OUT
(20mV/Div)
V
OUT
(10mV/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 1.05V, I
OUT
= 0A to 3A
V
SW
(10V/Div)
V
IN
= 12V, V
OUT
= 1.05V, I
OUT
= 3A
Time (100μs/Div)
Time (500ns/Div)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7266-02
September 2012
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
