R1230D Datasheet, PDF (14/20 Pages) RICOH electronics devices division – PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier

4) Output Waveform
COUT=10uF Tantalum Capacitor ESR=400mohm
0.05
0.04
0.03
0.02
0.01
0
-0.01
-0.02
-0.03
-0.04
-4.00E-06 -3.00E-06 -2.00E-06 -1.00E-06
0.00E+00
PWM Mode
Time[sec]
R1230D181B
1.00E-06
2.00E-06
3.00E-06
VIN=5.0V IOUT=10mA
4.00E-06
COUT=10uF Tantalum Capacitor ESR=400mohm
0.04
0.03
0.02
0.01
0
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
-4.00E-06
-3.00E-06
PWM Mode
-2.00E-06
-1.00E-06
0.00E+00
Time[sec]
5) Output Voltage vs. Input Voltage
1.9
R1230D181B
1.00E-06
2.00E-06
3.00E-06
VIN=5.0V IOUT=100mA
4.00E-06
R1230D181B IOUT=20mA
1.85
VFM
1.8
PWM
1.75
1.7
2
2.5
3
6) Output Voltage vs. Temperature
1.9
1.88
1.86
1.84
1.82
1.8
1.78
1.76
1.74
1.72
1.7
-60
-40
-20
3.5
4
4.5
5
Input Voltage VIN[V]
R1230D181B IOUT=100mA
0
20
40
60
Temperature Topt ^(°C)
5.5
6
80
100
Rev. 1.12
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