R1223N Datasheet, PDF (3/19 Pages) RICOH electronics devices division – PWM/VFM Step-down DC/DC Converter

n PIN CONFIGURATION
l SOT-23-5
5
4
VIN
EXT
(mark side)
CE GND VOUT
123
n PIN DESCRIPTION
Pin No.
1
2
3
4
5
Symbol
CE
GND
VOUT
EXT
VIN
Description
Chip Enable Pin
Ground Pin
Pin for Monitoring Output Voltage
External Transistor Drive Pin
Power Supply Pin
n ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
VEXT
VCE
VOUT
IEXT
PD
Topt
Tstg
Item
VIN Supply Voltage
EXT Pin Output Voltage
CE Pin Input Voltage
VOUT Pin Input Voltage
EXT Pin Inductor Drive Output Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Rating
Unit
15
V
-0.3~VIN+0.3
V
-0.3~VIN+0.3
V
-0.3~VIN+0.3
V
±25
mA
250
mW
-40~+85
°C
-55~+125
°C
12345
Rev. 1.11
-3-