rt8009 Richtek Technology Corporation, rt8009 Datasheet - Page 7

• Manufacturer Part Number: rt8009
• Description: 1.25mhz, 600ma, High Efficiency Step-down Dc/dc Converter
• Manufacturer: Richtek Technology Corporation

(500mA/Div)
(500mA/Div)
(20mV/Div)
DS8009-03 March 2007
(2mV/Div)
I
V
(5V/Div)
OUT
V
I
LX
OUT
OUT
V
LX
0.60
0.58
0.56
0.54
0.52
0.50
0.48
0.46
0.44
0.42
0.40
2.5
V
V
V
OUT
IN
IN
2.8
= 3.3V, V
= 3.3V, V
= 1.8V
Reference vs. Input Voltage
Load Transient Response
3.1
OUT
OUT
3.4
Output Ripple
Time (100μs/Div)
Time (500ns/Div)
Input Voltage (V)
= 1.8V, I
= 1.8V, I
3.7
OUT
4
OUT
= 150mA to 600mA
= 600mA
4.3
4.6
4.9
5.2
5.5
(200mA/Div)
(500mA/Div)
(20mV/Div)
I
(2V/Div)
V
(1V/Div)
OUT
I
IN
OUT
V
V
OUT
0.510
0.508
0.505
0.503
0.500
0.498
0.495
0.493
0.490
EN
-50
V
V
V
IN
IN
IN
= 3.3V, V
= 3.3V, V
= 3.3V, V
-25
Reference vs. Temperature
Load Transient Response
OUT
OUT
OUT
0
Temperature
Time (100μs/Div)
Time (100μs/Div)
= 1.8V
= 1.8V, I
= 1.8V, I
Power On
25
OUT
OUT
50
(°C)
= 300mA to 600mA
= 600mA
RT8009
www.richtek.com
75
100
125
7