RT9270 Просмотр технического описания (PDF) - Richtek Technology
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RT9270 Datasheet PDF : 13 Pages
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RT9270
Preliminary
Typical Operating Characteristics
Efficiency vs. Output Current
92
90
88
L = 10uH, fOSC = 670kHz
86
84
82
80
L = 4.7uH, fOSC = 1.3MHz
78
76
74
VIN = 3.3V
72 VOUT = 12V
70
1
10
100
Output Current (mA)
1000
Efficiency vs. Output Current
92
90
L = 10uH, fOSC = 670kHz
88
86
84
82
L = 4.7uH, fOSC = 1.3MHz
80
78
76
74
72 VIN = 5V
VOUT = 12V
70
1
10
100
Output Current (mA)
1000
760
740
720
700
680
660
640
620
600
2
Frequency vs. VIN
3
4
5
6
VIN (V)
1.6
1.5
1.4
1.3
1.2
1.1
1
2
Frequency vs. VIN
3
4
5
6
VIN (V)
Frequency vs. Temperature
900
800
700
600
500
VIN = 3.3V
fOSC = 670kHz
400
-50 -30 -10 10 30 50 70 90
Temperature (°C)
110 130
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Frequency vs. Temperature
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
VIN = 3.3V
fOSC = 1.3MHz
-50 -30 -10 10 30 50 70 90 110 130
Temperature (°C)
DS9270-09 March 2007
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