R1221N15AA RICOH [RICOH electronics devices division], R1221N15AA Datasheet - Page 6

• Manufacturer Part Number: R1221N15AA
• Description: Step-down DC/DC Converter with Voltage Detector
• Manufacturer: RICOH [RICOH electronics devices division]

n TEST CIRCUITS
Inductor L : 27mH(Sumida Electronic, CD104)
Capacitor CL: 47mF(Tantalum type)
Power MOS PMOS : HAT1020R(Hitachi)
Rev. 1.11
C)
A)
B)
V
V
D)
V
V
V
IN
IN
IN
IN
E)
IN
A
12345
C
+
-
IN
A
C
3
4
IN
+
--
PMOS
A
3
4
3
4
2
1
3
4
3
4
1
2
1
2
6
5
A
1
2
1
2
6
5
6
5
6
5
6
5
V
V
OUT
EXT
OSCILLOSCOPE
SD
L
+
-
C
L
V
Resistor R : 100kW
Diode SD : RB491D (Rohm, Schottky type)
V
- 6 -
IN
C
IN
V
IN
V
V
J)
: 22mF(Tantalum type)
I)
H)
IN
IN
F)
PMOS
G)
V
+
-
C
IN
IN
3
4
3
4
R
3
4
3
4
1
2
2
3
4
1
2
1
2
1
6
5
2
1
6
5
6
5
6
5
OSCILLOSCOPE
A
6
5
OSCILLOSCOPE
SD
OSCILLOSCOPE
A
V
L
OUT
V
+
-
V
OUT
V
DOUT
OUT
C
L
V