R1280D002X Datasheet, PDF (20/26 Pages) RICOH electronics devices division – 2CH PWM DC/DC Controller

17) Soft Starting Time vs. Capacitance value
R1280D002B
40
VIN=3.3V
R1280D002B
50
30
20
10
0
0
0.2
0.4
0.6
0.8
1
1.2
Capacitance value for Soft Start(uF)
18) Soft Starting Time vs. Temperature
R1280D002B
20
CDTC1=0.33µF
15
10
5
0
-50
0
Temperature
Top5t0^(°C)
19) Load Transient Response(Step-up Side)
10.5
R1280D002A
100
L1=6.8µH
10
9.5
9
8.5
100
8
7.5
0
0.0005 0.001 0.0015
Time (sec)
0.1
0.002
40
30
20
10
0
0
30
25
20
15
10
5
0
-50
11.5
0.2
0.4
0.6
0.8
1
1.2
Capacitance value for Soft Start(uF)
VIN=3.3V
CDTC2=0.33µF
R1280D002B
0
Temperature
Top5t^(0°C)
R1280D002A
100
VIN=3.3V
L1=6.8µH
11
10.5
10
9.5
100
9
8.5
0
0.1
0.01 0.02 0.03 0.04 0.05
Time (sec)
Rev.1.10
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