R1230D251B-TL RICOH [RICOH electronics devices division], R1230D251B-TL Datasheet - Page 17

• Manufacturer Part Number: R1230D251B-TL
• Description: PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier
• Manufacturer: RICOH [RICOH electronics devices division]

14) Duty Cycle at VFM Mode vs. Temperature
15) Lx Transistor On Resistance vs. Temperature
16) Limit Voltage vs. Temperature
17) Load Transient Response
Rev. 1.12
80
75
70
65
60
55
50
-4.00E-05
0.75
0.25
0.45
0.35
0.25
0.15
0.5
0.5
0.4
0.3
0.2
0.1
-60
1
0
-60
-60
-2.00E-05
I
OUT
=0A
-40
-40
-40
0.00E+00
Pch Tr. On Resistance
-20
-20
-20
2.00E-05
4.00E-05
0
0
0
- 17 -
Temperature Topt
Temperature Topt
Time[sec]
Temperature Topt
6.00E-05
20
20
20
8.00E-05
Nch Tr. On Resistance
I
( C)
( C)
OUT
( C)
=100mA
40
40
40
1.00E-04
R1230D181B V
60
60
60
1.20E-04
IN
=5.0V PWM
V
IN
=3.0V
80
1.40E-04
80
80
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
100
100
100