R1225N Datasheet, PDF (29/31 Pages) RICOH electronics devices division – PWM/VFM step-down DC/DC Converter

R1225N502C L=10uH
5.100
5.080
5.060
5.040
5.020
VIN= 6.5V
VIN=12.0V
VIN=15.0V
5.000
4.980
4.960
4.940
4.920
4.900
0.1
1
10 100 1000
Output Current IOUT(mA)
10000
R1225N502J L=27uH
5.100
5.080
5.060
5.040
5.020
5.000
4.980
4.960
4.940
4.920
VIN= 6.5V
VIN=10.0V
4.900
0.1
1
10 100 1000
Output Current IOUT(mA)
10000
5) Load Transient Response
R1225N332A L=10uH VIN=4.8V
3.50
2000
3.40
1800
3.30
1600
3.20
1400
3.10
1200
3.00
1000
2.90
800
2.80
600
2.70
400
2.60
200
2.50
0
-0.0002 -0.0001 0.0000 0.0001 0.0002 0.0003 0.0004
Time(sec)
R1225N
R1225N502D L=10uH
5.100
5.080
5.060
5.040
5.020
5.000
4.980
4.960
VIN= 6.5V
4.940
VIN=12.0V
4.920
VIN=15.0V
4.900
0.1
1
10 100 1000
Output Current IOUT(mA)
10000
R1225N502K L=27uH
5.100
5.080
5.060
VIN= 6.5V
5.040
VIN=12.0V
5.020
VIN=15.0V
5.000
4.980
4.960
4.940
4.920
4.900
0.1
1
10 100 1000
Output Current IOUT(mA)
10000
R1225N332A L=10uH VIN=4.8V
3.50
2000
3.45
1800
3.40
1600
3.35
1400
3.30
1200
3.25
1000
3.20
800
3.15
600
3.10
400
3.05
200
3.00
0
-0.05
0.00
0.05
0.10
0.15
Time(sec)
29