RT8048 Datasheet, PDF (7/11 Pages) Richtek Technology Corporation – 3MHz 1A Step-Down Converter

RT8048
UVLO vs. Temperature
3.0
2.7
2.4
Rising
2.1
Falling
1.8
1.5
-50 -25
0
25 50 75
Temperature (°C)
100 125
EN Threshold Voltage vs. Temperature
1.6
1.5
1.4
1.3
1.2
Rising
1.1
1.0
Falling
0.9
0.8
0.7
0.6
-50 -25
0
25 50 75
Temperature (°C)
100 125
Output Voltage vs. Output Current
1.24
1.23
1.22
1.21
1.20
VIN = 5V
VIN = 3.3V
1.19
1.18
VOUT = 1.2V
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Output Current (A)
Output Voltage vs. Output Current
3.42
3.41
3.40
3.39
3.38
3.37
3.36
3.35
3.34
3.33
3.32
0
VIN = 5V, VOUT = 3.3V
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Output Current (A)
VOUT
(10mV/Div)
Switching
VOUT
(10mV/Div)
Switching
VLX
(5V/Div)
IL
(2A/Div)
VIN = 5V, VOUT = 1.2V, IOUT = 1A
Time (250ns/Div)
VLX
(5V/Div)
IL
(2A/Div)
VIN = 5V, VOUT = 3.3V, IOUT = 1A
Time (250ns/Div)
DS8048-01 June 2011
www.richtek.com
7