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RT9902 Datasheet(PDF) 11 Page - Richtek Technology Corporation

Part # RT9902
Description  4 Channel DC/DC Converters IC with High-Efficiency Step-Up and Step-Down
PDF  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9902 Datasheet(HTML) 11 Page - Richtek Technology Corporation

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RT9902
Preliminary
11
DS9902-10 August 2007
www.richtek.com
Buck2 Efficiency vs. Output Current
30
40
50
60
70
80
90
100
1
10
100
1000
Output Current (mA)
VOUT = 2.5V
VIN = 4.5
VIN = 3.8V
VIN = 3V
Buck2 Efficiency vs. Output Current
50
60
70
80
90
100
1
10
100
1000
Output Current (mA)
VIN = 4.5V
VIN = 3.8V
VIN = 3V
VIN = 2.5V
VIN = 2.2V
VOUT = 1.5V
Buck2 Efficiency vs. Output Current
50
60
70
80
90
100
1
10
100
1000
Output Current (mA)
VOUT = 1.8V
VIN = 4.5 VIN = 3.8V
VIN = 3V
VIN = 2.5V
Boost LX & Output Ripple
Time (1us/Div)
VIN = 2.5V, VOUT = 3.3V, @IOUT = 400mA
Boost LX & Output Ripple
Time (1us/Div)
VIN = 3V, VOUT = 3.3V, @IOUT = 100mA
Boost LX & Output Ripple
Time (1us/Div)
VIN = 3V, VOUT = 3.3V, @IOUT = 400mA



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