R1224N Datasheet, PDF (39/42 Pages) RICOH electronics devices division – PWM/VFM step-down DC/DC Converter

R1224N
R1224N332M L=27µH 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
-2E-04 -1E-04 0 0.0001 0.0002 0.0003 0.0004
Time(sec)
R1224N332M L=27µH 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
-0.04 -0.02 0 0.02 0.04 0.06 0.08
Time(sec)
R1224N332M L=27µH VIN=10V
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
-2E-04 -1E-04 0 1E-04 2E-04 3E-04 4E-04
Time(sec)
R1224N332M L=27µH VIN=10V
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
-0.04 -0.02 0 0.02 0.04 0.06 0.08
Time(sec)
12) UVLO Voltage vs. Temperature
2.20
R1224N332E
2.15
2.10
2.05
2.00
1.95
1.90
-40
-15
10
35
60
85
Temperature Topt(˚C)
39