r1230d RICOH Co.,Ltd., r1230d Datasheet - Page 14

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

4) Output Waveform
5) Output Voltage vs. Input Voltage
6) Output Voltage vs. Temperature
Rev. 1.12
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
1.85
1.75
1.88
1.86
1.84
1.82
1.78
1.76
1.74
1.72
0.04
0.03
0.02
0.01
1.9
1.8
1.7
1.9
1.8
1.7
-4.00E-06
-0.01
-0.02
-0.03
-0.04
0
0.05
0.04
0.03
0.02
0.01
-60
-4.00E-06
PWM Mode
2
PWM Mode
0
C
OUT
-3.00E-06
C
=10uF Tantalum Capacitor ESR=400mohm
-3.00E-06
-40
2.5
OUT
=10uF Tantalum Capacitor ESR=400mohm
-2.00E-06
-2.00E-06
-20
3
-1.00E-06
-1.00E-06
3.5
0
Input Voltage V
Temperature Topt
- 14 -
Time[sec]
0.00E+00
Time[sec]
0.00E+00
R1230D181B I
20
4
VFM
IN
PWM
[V]
1.00E-06
1.00E-06
( C)
OUT
4.5
40
=100mA
R1230D181B I
V
V
IN
2.00E-06
IN
2.00E-06
=5.0V I
=5.0V I
60
5
OUT
OUT
OUT
=100mA
=20mA
=10mA
3.00E-06
3.00E-06
R1230D181B
R1230D181B
5.5
80
4.00E-06
4.00E-06
100
6