RT7247B
Output Current vs. Temperature
5.0
4.5
5.0
4.5
Output Current vs. Input Voltage
Output Current (A)
4.0
3.5
3.0
2.5
Output Current (A)
V
IN
= 8V, V
OUT
= 1.2V
4.0
3.5
3.0
2.5
V
OUT
= 3.3V
2.0
4
6.6
9.2
11.8
14.4
17
2.0
-50
-25
0
25
50
75
100
125
Temperature (°C)
Input Voltage (V)
Load Transient Response
Output Ripple Voltage
V
OUT
(100mV/Div)
V
OUT
(5mV/Div)
V
SW
(5V/Div)
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 1A to 2A
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 2A
Time (100μs/Div)
Time (500ns/Div)
Power On from VIN
Power Off from VIN
V
IN
(5V/Div)
V
OUT
(2V/Div)
I
L
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 2A
V
IN
(5V/Div)
V
OUT
(2V/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 2A
Time (5ms/Div)
Time (5ms/Div)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS7247B-01
September 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
