rt8070 Richtek Technology Corporation, rt8070 Datasheet - Page 7

• Manufacturer Part Number: rt8070
• Description: 4a, 2mhz, Synchronous Step-down Converter
• Manufacturer: Richtek Technology Corporation

(200mV/Div)
DS8070-03 March 2011
V
(2A/Div)
(5V/Div)
(1V/Div)
V
(5V/Div)
(5A/Div)
(5V/Div)
(1V/Div)
V
(5V/Div)
(5A/Div)
OUT
I
V
PGOOD
V
I
PGOOD
OUT
V
I
V
OUT
OUT
OUT
OUT
EN
IN
Load Transient Response
V
IN
= 5V, V
V
R
Power On from V
Power On from EN
IN
COMP
= 5V, V
Time (100μs/Div)
Time (2.5ms/Div)
Time (500μs/Div)
OUT
= 10kΩ, C
V
IN
= 1.1V, I
= 5V, V
OUT
= 1.1V, I
COMP
OUT
OUT
= 1.1V, I
= 560pF
= 4A, EN = High
OUT
IN
= 1A to 4A,
OUT
= 4A
(10mV/Div)
V
(5V/Div)
(5V/Div)
(1V/Div)
(5V/Div)
(5A/Div)
(5V/Div)
(1V/Div)
(5V/Div)
(5A/Div)
V
V
OUT
V
V
PGOOD
PGOOD
I
I
V
V
V
OUT
OUT
OUT
OUT
EN
LX
IN
V
IN
= 5V, V
Power Off from V
Power Off from EN
Time (500ns/Div)
Time (250μs/Div)
Time (5ms/Div)
V
Switching
V
OUT
IN
IN
= 5V, V
= 5V, V
= 1.1V, I
OUT
OUT
OUT
RT8070
www.richtek.com
= 1.1V, I
= 1.1V, I
= 4A, EN = High
IN
OUT
OUT
= 4A
= 4A
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