RT8280 Просмотр технического описания (PDF) - Richtek Technology
Номер в каталоге
Компоненты Описание
производитель
RT8280 Datasheet PDF : 16 Pages
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RT8280
6.50
6.25
6.00
5.75
5.50
5.25
5.00
4.75
4.50
4.25
4.00
3.75
3.50
0
Current Limit vs. Duty Cycle
fSW = 2.2MHz
fSW = 400kHz
20
40
60
80
100
Duty Cycle (%)
Current Limit vs. Temperature
6.0
5.5
5.0
4.5
4.0
3.5
VIN = 12V, VOUT = 3.3V, fSW = 2.2MHz
3.0
-50 -25
0
25 50 75 100 125
Temperature (°C)
Switching Frequency vs. Temperature
2.4
2.3
VOUT
(10mV/Div)
Output Ripple Voltage
2.2
VSW
2.1
(5V/Div)
2.0
1.9
1.8
-50 -25
VIN = 12V, VOUT = 3.3V, RRT = 24kΩ
0
25 50 75
Temperature (°C)
100 125
IL
(2A/Div)
VIN = 12V, VOUT = 3.3V
lOUT = 3A, fSW = 2.2MHz
Time (200ns/Div)
Load Transient Response
VOUT
(200mV/Div)
VIN = 12V, VOUT = 3.3V
lOUT = 0A to 3A, fSW = 2.2MHz
VOUT
(200mV/Div)
Load Transient Response
IOUT
(1A/Div)
Time (100μs/Div)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8280-02 March 2012
IOUT
(1A/Div)
VIN = 12V, VOUT = 3.3V
lOUT = 1.5A to 3A, fSW = 2.2MHz
Time (100μs/Div)
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