R1212D Datasheet, PDF (3/41 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

PIN CONFIGURATION
Top View
8765
SON-8
Bottom View
5678
∗∗
∗
R1212D
1234
4321
PIN DESCRIPTION
Pin No
1
2
3
Symbol
EXT
GND
DTC
4
DELAY
5
VFB
6
VREFOUT
7
AMPOUT
8
VIN
Description
External FET Drive Pin (CMOS Output)
Ground Pin
Pin for Setting Maximum Duty Cycle and Soft start time
Pin for External Capacitor
(for Setting Output Delay of Protection)
Feedback Pin for monitoring Output Voltage
Reference Voltage Output Pin
Amplifier Output Pin
Power Supply Pin for the IC
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
(GND=0V)
Unit
VIN
VIN Pin Voltage
6.5
V
VEXT
EXT Pin Output Voltage
−0.3 ~ VIN+0.3
V
VDLY
DELAY Pin Voltage
−0.3 ~ VIN+0.3
V
VREFOUT
VREFOUT Pin Voltage
−0.3 ~ VIN+0.3
V
VAMP
AMPOUT Pin Voltage
−0.3 ~ VIN+0.3
V
VDTC
DTC Pin Voltage
−0.3 ~ VIN+0.3
V
VFB
VFB Pin Voltage
−0.3 ~ VIN+0.3
V
IAMP
AMPOUT Pin Current
±10
V
IROUT
VREFOUT Pin Current
30
mA
IEXT
EXT Pin Inductor Drive Output Current
PD
Power Dissipation (SON-8)*¹
±80
mA
480
mW
Topt
Operating Temperature Range
−40 ~ +85
°C
Tstg
Storage Temperature Range
−55 ~ +125
°C
∗1) For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
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