R1280D002X Datasheet, PDF (3/26 Pages) RICOH electronics devices division – 2CH PWM DC/DC Controller

s SELECTION GUIDE
The mask option for the ICs can be selected at the user's request. The selection can be made with designating the
part number as shown below;
R1280D002X-TR
←Part Number
↑↑
ab
Code
a
b
Contents
Designation of Mask Option :
A version: fosc=700kHz, with External Phase Compensation for Channel 1.
B version: fosc=700kHz, with Internal Phase Compensation and standby mode.
C version: fosc=200kHz, with External Phase Compensation for Channel 1
Designation of Taping Type :
(Refer to Taping Specifications.)
s PIN CONFIGURATION
q SON10
10
6
(mark side)
1
5
s PIN DESCRIPTION
q R1280D002A/C
Pin No.
Symbol
1
EXT1
2
GND
3
AMPOUT1
4
DTC1
5
VFB1
6
VFB2
7
DTC2
8
Vrefout
9
VIN
10
EXT2
Description
External Transistor of Channel 1 Drive Pin (CMOS Output)
Ground Pin
Amplifier Output Pin of Channel 1
Maximum Duty Cycle of Channel 1 Setting Pin
Feedback pin of Channel 1
Feedback pin of Channel 2
Maximum Duty Cycle of Channel 2 Setting Pin
Reference Output Pin
Voltage Supply Pin of the IC
External Transistor of Channel 2 Drive Pin (CMOS Output)
Rev. 1.10
-3-