R1230D Datasheet, PDF (4/20 Pages) RICOH electronics devices division – PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier

s PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
Symbol
VIN
PGND
VDD
CE
VOUT/VFB
MODE
AGND
Lx
Description
Voltage Supply Pin
Ground Pin
Voltage Supply Pin
Chip Enable Pin (active with “H”)
Output/Feedback Pin
Mode changer Pin (PWM mode at “L”, VFM mode at “H”.)
Ground Pin
Lx Pin
s ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
VDD
VLX
VCE
VMODE
VFB
ILX
PD
Topt
Tstg
Item
VIN Supply Voltage
VDD Pin Voltage
Lx Pin Voltage
CE Pin Input Voltage
MODE Pin Input Voltage
VFB Pin Input Voltage
LX Pin Output Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
(AGND=PGND=0V)
Rating
Unit
6.5
V
6.5
V
-0.3∼VIN+0.3
V
-0.3∼VIN+0.3
V
-0.3∼VIN+0.3
V
-0.3∼VIN+0.3
V
-0.8
A
250
mW
-40∼+85
°C
-55∼+125
°C
Rev. 1.12
-4-