R1280D002X Datasheet, PDF (11/26 Pages) RICOH electronics devices division – 2CH PWM DC/DC Controller

s TEST CIRCUITS
q Test Circuit 1
q Test Circuit 2
EXT1 EXT2
OSCILLOSCOPE
C1
GND VIN
AMPOUT ^C2
Vrefout
DTC1 DTC2
VFB1 VFB2
q Test Circuit 3
EXT1 EXT2
C1
GND
V
IN
OSCILLOSC OPE
AMPOUT _C2
Vrefout
DTC1 DTC2
VFB1 VFB2
q Test Circuit 4
C1
q Test Circuit 5
EXT1 EXT2
OSCILLOSCOPE
GND ^VIN C2
AMPOUT
Vrefout
DTC1 DTC2
VFB1 VFB2
EXT1 EXT2
C1
GND V
AMPOUT ^IN
Vrefout
DTC1 DTC2
VV
FB1 FB2
q Test Circuit 6
OSCILLOSCOPE
C2
EXT1 EXT2
GND V IN
C1
AMPOUT
C2
Vrefout
DTC1 DTC2
V
VFB1 VFB2
q Test Circuit 7
EXT1 EXT2
OSCILLOSCOPE
C1
GND VIN
AMPOUT
C2
Vrefout
DTC1 DTC2
VFB1 VFB2
EXT1 EXT2
C1
GND VIN
AMPOUT
C2
Vrefout
A
DTC1 DTC2
VFB1 VFB2
V
q Test Circuit 8
OSCILLOSC OPE
EXT1 EXT2
C1
GND
V
IN
AMPOUT
Vrefout
DTC1 DTC2
VV
FB1 FB2
Rev. 1.10
- 11 -