RT9277A 데이터 시트보기 (PDF) - Richtek Technology
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RT9277A Datasheet PDF : 12 Pages
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Preliminary
RT9277A/B
Typical Operating Characteristics
Efficiency vs. Output Current
95
640kHz
90
85
1.2MHz
80
75
70
65
60
55
50
0
20 40
VIN = 3.3V, VOUT = 12V
60 80 100 120 140 160 180 200
Output Current (mA)
Efficiency vs. Output Current
100
640kHz
90
1.2MHz
80
70
60
50
0
VIN = 5.0V, VOUT = 12V
50 100 150 200 250 300 350 400
Output Current (mA)
Efficiency vs. Output Current
100
VIN = 5V
90
VIN = 3.5V
80
70
60
50
0
VOUT = 9.0V, f = 1.2MHz
50 100 150 200 250 300 350 400
Output Current (mA)
Output Voltage vs. Output Current
12.06
12.04
12.02
12.00
11.98
11.96
1.2MHz
640kHz
11.94
11.92
11.90
0
VIN = 5.0V, VOUT = 12V
50 100 150 200 250 300 350
Output Current (mA)
Output Voltage vs. Output Current
12.06
12.04
12.02
640kHz
12.00
11.98
1.2MHz
11.96
11.94
0
VIN = 3.3V, VOUT = 12V
20 40 60 80 100 120 140 160 180 200
Output Current (mA)
Output Voltage vs. Output Current
9.00
8.96
8.92
8.88
VIN = 3.5V
VIN = 5V
8.84
8.80
0
VOUT = 9.0V, f = 1.2MHz
50 100 150 200 250 300 350
Output Current (mA)
DS9277A/B-02 March 2007
www.richtek.com
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