R1221N RICOH electronics devices division, R1221N Datasheet - Page 21

• Manufacturer Part Number: R1221N
• Description: Step-down DC/DC Converter with Voltage Detector
• Manufacturer: RICOH electronics devices division

Rev. 1.11
-0.5
-1.5
-2.5
-3.5
-0.5
-1.5
-2.5
-3.5
3.5
2.5
1.5
0.5
-0.5
-1.5
-2.5
-3.5
3.5
2.5
1.5
0.5
-1
-2
-3
3.5
2.5
1.5
0.5
-1
-2
-3
3
2
1
0
-0.01
-1
-2
-3
3
2
1
0
-0.01
3
2
1
0
-0.01
R1221N33AB
R1221N33AA
R1221N33AB
0
0
0
Time (sec)
(V
(V
Time (sec)
Time (sec)
(V
IN
IN
IN
=10V,I
=10V,I
=10V,I
0.01
OUT
OUT
0.01
0.01
OUT
=100mA)
=100mA)
=0mA)
L=27uH
L=27uH
L=27uH
0.02
0.02
0.02
10
10
0
0
10
0
- 21 -
-0.5
-1.5
-2.5
-3.5
-0.5
-1.5
-2.5
-3.5
3.5
2.5
1.5
0.5
3.5
2.5
1.5
0.5
-0.5
-1.5
-2.5
-3.5
-1
-2
-3
3.5
2.5
1.5
0.5
-1
-2
-3
3
2
1
0
3
2
1
0
-0.01
-0.01
-1
-2
-3
3
2
1
0
-0.01
R1221N33AA
R1221N33AB
R1221N33AB
0
0
0
Time (sec)
(V
(V
Time (sec)
(V
IN
IN
Time (sec)
IN
=5V,I
=5V,I
=5V,I
OUT
OUT
0.01
OUT
0.01
0.01
12345
=100mA)
=100mA)
=0mA)
L=27uH
0.02
L=27uH
L=27uH
5
0
0.02
0.02
5
0
5
0