r1230d RICOH Co.,Ltd., r1230d Datasheet - Page 19

• Manufacturer Part Number: r1230d
• Description: Pwm/vfm Step-down Dc/dc Converter With Synchronous Rectifier
• Manufacturer: RICOH Co.,Ltd.

18) Turn-on Waveform
Rev. 1.12
-0.0004
-1
-0.0004
-1
5
4
3
2
1
0
5
4
3
2
1
0
-0.0002
-0.0004
-1
5
4
3
2
1
0
I
OUT
-0.0001
0
=200mA
0
0
0.0004
0
0.0004
0.0004
0.0001
0.0008
0.0008
0.0008
0.0002
- 19 -
0.0012
0.0012
0.0012
Time [sec]
Time [sec]
Time [sec]
Time [sec]
0.0003
0.0016
0.0016
0.0016
0.0004
PWM Mode I
I
OUT
0.0005
R1230D181B V
PWM Mode I
PWM Mode I
0.002
0.002
0.002
R1230D181B V
=2mA
R1230D181B V
R1230D181B V
0.0006
OUT
OUT
0.0024
=0A
OUT
0.0024
0.0024
IN
=5.0V
=50mA
IN
IN
=200mA
=5.0V
=5.0V
CE
V
OUT
0.0007
IN
CE
V
CE
V
OUT
=5.0V PWM
OUT
0.0028
0.0028
0.0028
0.0008
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
4
2
0
-2
-4
-6
-8
-10
4
2
0
-2
-4
-6
-8
-10
4
2
0
-2
-4
-6
-8
-10