R1221N RICOH electronics devices division, R1221N Datasheet - Page 3

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

n n n n PIN DESCRIPTION
n n n n ABSOLUTE MAXIMUM RATING
Rev. 1.11
n n n n PIN CONFIGURATION
Pin No.
1
2
3
4
5
6
Symbol
VD
V
V
Topt
Tstg
V
I
V
EXT
P
OUT
EXT
CE
OUT
IN
D
Symbol
VD
V
GND
EXT
V
CE
OUT
OUT
IN
V
EXT Pin Output Voltage
CE Pin Input Voltage
VD
V
EXT Pin Inductor Drive Output Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
IN
OUT
OUT
Supply Voltage
Pin Input Voltage
Ground Pin
External Transistor Drive Pin (Output Type ; CMOS)
Voltage Detector Output Pin (Output Type ; Nch Open Drain )
Power Supply Pin
Chip Enable Pin
Pin for Monitoring Output Voltage
Pin Output Voltage
l
EXT VD
V
6
1
OUT
SOT-23-6W
(mark side)
Item
GND
2
5
OUT
- 3 -
4
V
3
CE
IN
Description
-0.3~V
-0.3~V
-0.3~V
-55~+125
-40~+85
-0.3~15
Rating
±25
250
15
IN
IN
IN
+0.3
+0.3
+0.3
12345
mW
Unit
mA
°C
°C
V
V
V
V
V