RT7256B
Power On from V
IN
Power Off from V
IN
V
IN
(5V/Div)
V
OUT
(2V/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A
V
IN
(5V/Div)
V
OUT
(2V/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A
Time (25ms/Div)
Time (25ms/Div)
Power On from EN
Power Off from EN
V
EN
(5V/Div)
V
OUT
(2V/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A
V
EN
(5V/Div)
V
OUT
(2V/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A
Time (25ms/Div)
Time (25ms/Div)
UV Shutdown Hiccup
UV Shutdown Latch
V
LX
(5V/Div)
V
OUT
(1V/Div)
I
OUT
(5A/Div)
V
LX
(5V/Div)
V
OUT
(2V/Div)
I
OUT
(5A/Div)
V
IN
= 12V, V
OUT
= 3.3V
V
IN
= 12V, V
OUT
= 3.3V
Time (25ms/Div)
Time (25ms/Div)
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS7256B-00
February 2012