R1215D Datasheet, PDF (18/22 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1215D
8) DELAY Pin Charge Current vs. Temperature
R1215D002x
VIN=2.5V
6.5
6.0
5.5
5.0
4.5
-40 -25 0
25 50
Temperature Topt(°C)
75 85
9) DELAY Pin Discharge Current vs. Temperature
R1215D002x
VIN=1.8V
400
350
300
250
200
150
100
50
0
-40 -25 0
25 50
Temperature Topt(°C)
75 85
10) DELAY Pin Detector Threshold vs. Temperature
R1215D002x
1.02
VIN=2.5V
1.01
1.00
0.99
0.98
0.97
0.96
-40 -25 0
25 50
Temperature Topt(°C)
75 85
11) VREFOUT Voltage vs. VREFOUT Current
R1215D002x
VIN=2.5V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
10 20 30 40 50
VREFOUT Current(mA)
12) Maximum Duty Cycle vs. DTC Pin Voltage (Topt=25°C)
R1215D002A/E
VIN=2.5V,Frequency=700kHz
100
100
R1215D002B/F
VIN=2.5V,Frequency=1.4MHz
80
80
60
60
40
40
20
20
0
300 400 500 600 700 800 900 1000 1100
DTC Pin Voltage VDTC(mV)
0
300 400 500 600 700 800 900 1000 1100
DTC Pin Voltage VDTC(mV)
18