RT8055B 查看數據表（PDF） - Richtek Technology
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RT8055B Datasheet PDF : 13 Pages
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RT8055B
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
70
60
50
40
30
20
10
VIN = 5V, VOUT = 3.3V
0
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Output Current (A)
Output Voltage vs. Output Current
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
VIN = 5V, VOUT = 3.3V
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Output Current (A)
Switching Frequency vs. Input Voltage
2.1
2.0
1.9
1.8
1.7
1.6
VIN = 5V, VOUT = 3.3V
IOUT = 0.3A, fSW = 1.8MHz
1.5
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
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Output Voltage vs. Input Voltage
3.36
3.35
3.34
3.33
3.32
3.31
3.30
IOUT = 0A, VOUT = 3.3V
3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
-50
VIN UVLO vs. Temperature
Rising
Falling
VOUT = 3.3V
-25 0
25 50 75 100 125
Temperature (°C)
Switching Frequency vs. Temperature
2.1
2.0
1.9
1.8
1.7
1.6
1.5
-50 -25
VIN = 5V, VOUT = 3.3V
IOUT = 0.3A, fSW = 1.8MHz
0
25 50 75
Temperature (°C)
100 125
DS8055B-03 April 2011
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