R1280D002X Datasheet, PDF (17/26 Pages) RICOH electronics devices division – 2CH PWM DC/DC Controller

4) Frequency vs. Temperature
R1280D002A
800
750
700
650
VIN=2.5V
VIN=3.3V
600
VIN=5.5V
550
-60 -40 -20 0 20 40 60 80 100
Temperature Topt ^(°C)
R1280D002C
230
R1280D002B
800
750
700
650
VIN=2.5V
600
VIN=3.3V
VIN=5.5V
550
-60 -40 -20 0 20 40 60 80 100
Temperature Topt (°C)
210
190
VIN=2.5V
170
VIN=3.3V
VIN=5.5V
150
-60 -40 -20 0 20 40 60 80 100
Temperature Topt ^(°C)
5) Maximum Duty Cycle vs. Temperature
R1280D002B
94
VIN=3.3V
94
R1280D002B
92
92
90
90
88
88
86
-60
-40
-20
0 20
Temperature
T4o0pt^{(°C6) 0}
80 100
86
-60 -40 -20 0 20 40 60
Temperature Topt ^(°C)
80 100
Rev. 1.10
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