r1230d RICOH Co.,Ltd., r1230d Datasheet - Page 15

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

7) Oscillator Frequency vs. Temperature
8) Supply Current vs. Temperature
9) Soft-start time vs. Temperature
Rev. 1.12
1000
0.85
0.75
450
380
310
240
170
100
2.4
1.8
1.2
0.6
900
800
700
600
500
400
300
0.9
0.8
0.7
3
0
-60
-60
-60
-60
-40
-40
-40
-40
-20
-20
-20
-20
500kHz
0
0
0
0
- 15 -
Temperature Topt
Temperature Topt
Temperature Topt
Temperature Topt
R1230D001C/D I
800kHz
500kHz
20
20
20
20
800kHz
OUT
( C)
( C)
( C)
( C)
=100mA
40
40
40
40
R1230D181B V
60
V
V
60
60
60
IN
IN
=V
=5.5V
OUT
IN
+1.5V
=3.3V
80
80
80
80
100
100
100
100