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