RT9218B Просмотр технического описания (PDF) - Richtek Technology
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RT9218B Datasheet PDF : 17 Pages
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Typical Operating Characteristics
(VOUT = 2.5V, unless otherwise specified )
Efficiency vs. Output Current
1
0.95
0.9
0.85
0.8
0.75
0.7
0.65 VCC = 12V
VIN = 5V
0.6
0
5
10
15
20
25
Output Current (A)
RT9218B
Soft Start & PGOOD
(1V/Div)
PGOOD
SVOUT
IL
(500mV/Div)
(2A/Div)
Time (10ms/Div)
0.812
0.81
Reference Voltage vs. Temperature
VCC = 12V
VIN = 5V
0.808
0.806
0.804
0.802
0.8
0.798
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (°C)
POR vs. Temperature
4.75
Rising
4.5
4.25
4
Falling
3.75
3.5
-40
-10
20
50
80
110 140
Temperature (°C)
Frequency vs. Temperature
350
330
310
290
270
250
-40
-10
20
50
80
110 140
Temperature (°C)
OCP
UGATE
(10V/Div)
(10A/Div)
VCC = 12V, VIN = 5V
IL IOCSET= 20A
ROCSET = 15kΩ
Time (5us/Div)
DS9218B-09 March 2007
www.richtek.com
7
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