R1223N Datasheet, PDF (15/19 Pages) RICOH electronics devices division – PWM/VFM Step-down DC/DC Converter

8) Supply Current vs. Temperature
100
90
80
70
60
50
-50
R1223N332G
VIN15V
VIN13.2V
VIN8V
0
50
100
Temperature Topt (°C)
140
130
120
110
100
90
80
70
60
-50
9) Soft-start time vs. Temperature
16
14
12
10
8
6
4
2
0
-50
R1223N252A
L=27uH
VIN=3.7V
0
50
100
Temperature Topt ^(°C)
10
8
6
4
2
0
-50
10) Delay Time for Latch-type protection vs. Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-50
R1223N252A ^VIN=3.7V
0
50
100
Temperature Topt (°C)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-50
R1223N332H
VIN15V
VIN13.2V
VIN8V
0
50
100
Temperature Topt (°C)
R1223N332B
L=27uH
VIN=4.5V
0
50
100
Temperature Topt(°C)
R1223N332B ^VIN=4.5
0
50
100
Temperature Topt (°C)
Rev. 1.11
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