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GRM31CR60J476M Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # GRM31CR60J476M
Description  3A, 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

GRM31CR60J476M Datasheet(HTML) 7 Page - Richtek Technology Corporation

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RT8283B
7
DS8283B-01
March 2011
www.richtek.com
Current Limit vs. Temperature
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
-50
-25
0
25
50
75
100
125
Temperature (°C)
VIN = 12V, VOUT = 3.3V
Switching
Time (500ns/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 3A
IL
(2A/Div)
VOUT
(5mV/Div)
VSW
(10V/Div)
Load Transient Response
Time (100
μs/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 0A to 3A
IOUT
(2A/Div)
VOUT
(50mV/Div)
Current Limit vs. Duty Cycle
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
0
1020
30
4050
6070
80
Duty Cycle (%)
Load Transient Response
Time (100
μs/Div)
VOUT
(50mV/Div)
IOUT
(2A/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 1.5A to 3A
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
101214
161820
2224
Input Voltage (V)
VOUT = 1.2V
VOUT = 3.3V (Add Bootstrap Diode)
VOUT = 3.3V


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