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RT8252B Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # RT8252B
Description  2A, 23V, 1.2MHz Synchronous Step-Down Converter
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8252B Datasheet(HTML) 7 Page - Richtek Technology Corporation

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RT8252B
7
DS8252B-02
March 2011
www.richtek.com
Current Limit vs. Duty Cycle
3.0
3.5
4.0
4.5
5.0
5.5
6.0
0
10
203040
5060
7080
Duty Cycle (%)
VIN = 4.5V to 23V, VOUT = 3.3V
Current Limit VS. Temperature
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-50
-25
0
25
50
75
100
125
Temperature (°C)
VIN = 12V, VOUT = 3.3V
Output Current Limit vs. Input Voltage
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
4
6
8
1012141618
202224
Input Voltage (V)
VOUT = 1.2V
VOUT = 3.3V (Add Bootstrap Diode)
VOUT = 3.3V
Load Transient Response
Time (100
μs/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 0.2A to 2A
IOUT
(2A/Div)
VOUT
(50mV/Div)
Load Transient Response
Time (100
μs/Div)
VOUT
(50mV/Div)
IOUT
(2A/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 1A to 2A
Switching
Time (500ns/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 2A
IL
(1A/Div)
VOUT
(10mV/Div)
VSW
(10V/Div)


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