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RT9218 Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # RT9218
Description  5V/12V Synchronous Buck PWM DC-DC and Linear Power Controller
PDF  18 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9218 Datasheet(HTML) 7 Page - Richtek Technology Corporation

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RT9218
7
DS9218-08 March 2007
www.richtek.com
Typical Operating Characteristics
POR vs. Temperature
3.5
3.75
4
4.25
4.5
4.75
-40
-10
20
50
80
110
140
Temperature
Falling
Rising
Efficiency vs. Output Current
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
0
5
10
15
20
25
Output Current (A)
VCC = 5V
VIN = 5V
OCP
Time (5us/Div)
IL
(10V/Div)
(10A/Div)
UGATE
VCC = 12V, VIN = 5V
IOCSET= 20A
ROCSET = 15k
Ω
Efficiency vs. Output Current
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
0
5
10
15
20
25
Output Current (A)
VCC = 12V
VIN = 5V
(VOUT = 2.5V, unless otherwise specified )
Reference Voltage vs. Temperature
0.798
0.8
0.802
0.804
0.806
0.808
0.81
0.812
-40 -25 -10
5
20
35
50
65
80
95 110 125
Temperature (
°C)
VCC = 12V
VIN = 5V
Frequency vs. Temperature
250
270
290
310
330
350
-40
-10
20
50
80
110
140
Temperature (
°C)
Falling
Rising
(
°C)



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