R1282D002A Datasheet, PDF (12/18 Pages) RICOH electronics devices division – 2CH PWM DC/DC CONTROLLER

R1282D002A
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (Topt=25°C)
R1282D002A
L1=6.8µH,C1=10µF,VOUT2=2.5V,IOUT2=0mA
10.10
R1282D002A
L2=6.8µH,C2=10µF,VOUT1=10V,IOUT1=0mA
2.60
10.05
2.55
10.00
2.50
9.95
9.90
0
VIN=2.8V
VIN=3.3V
VIN=5.5V
50
100
150
200
Output Current IOUT1(mA)
2.45
2.40
0
VIN=2.8V
VIN=3.3V
VIN=5.5V
100 200 300 400 500 600
Output Current IOUT1(mA)
2) Efficiency vs. Output Current (VIN=3.3V, Topt=25°C)
R1282D002A
L1=6.8µH,C1=10µF,VOUT2=2.5V,IOUT2=0mA
90
80
70
60
50
40
30
20
VOUT1=5V
VOUT1=10V
10
VOUT1=15V
0
0
50
100
150
200
Output Current IOUT(mA)
R1282D002A
L2=6.8µH,C2=10µF,VOUT1=10V,IOUT1=0mA
90
80
70
60
50
40
30
20
VOUT2=1.8V
10
VOUT2=2.5V
0
0 100 200 300 400 500 600
Output Current lOUT(mA)
3) Output Voltage vs. Temperature (VIN=3.3V)
R1282D002A
L1=6.8µH,C1=10µF
11.0
R1282D002A
L2=6.8µH,C2=10µF
3.00
10.5
2.75
10.0
2.50
9.5
IOUT=10mA
IOUT=100mA
9.0
-60 -40 -20 0 20 40 60 80 100
Temperature Topt(°C)
2.25
IOUT=10mA
IOUT=100mA
IOUT=200mA
2.00
-60 -40 -20 0 20 40 60 80 100
Temperature Topt(°C)
12