RT8270 Datasheet, PDF (6/12 Pages) Richtek Technology Corporation – 2A, 22V, 1.2MHz Step-Down Converter

RT8270
4.50
4.25
4.00
3.75
3.50
3.25
3.00
2.75
2.50
4
Current Limit vs. Input Voltage
VIN = 4.75 to 22V, VOUT = 3.3V
6 8 10 12 14 16 18 20 22
Input Voltage (V)
Load Transient Response
4.50
4.25
4.00
3.75
3.50
3.25
3.00
2.75
2.50
-50
Current Limit vs. Temperature
VIN = 12V, VOUT = 3.3V
-25 0
25 50 75 100 125
Temperature (°C)
Load Transient Response
VOUT
(100mV/Div)
VOUT
(100mV/Div)
IOUT
(1A/Div)
VEN
(2V/Div)
VOUT
(2V/Div)
IOUT
(2A/Div)
VIN = 12V, VOUT_V=OU3_T.3=V,3I.O₃U_VT_{, I=OU}1_TA=to02.3AA
Time (100μs/Div)
Power On from EN
VIN = 12V, VOUT = 3.3V, IOUT = 2A
Time (5ms/Div)
IOUT
(1A/Div)
VEN
(2V/Div)
VOUT
(2V/Div)
IOUT
(2A/Div)
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6
VIN = 12V, VOUT = 3.3V, IOUT = 0A to 2A
Time (100μs/Div)
Power Off from EN
VIN = 12V, VOUT = 3.3V, IOUT = 2A
Time (5ms/Div)
DS8270-01 March 2011