8
Appendix Simplest Design to Replace UC6226
UC-06-C21 EN R1.0
Appendix Simplest Design to Replace UC6226
UC6580 can replace the UC6226 (QFN40) in the circuits. If your product uses UC6226
(QFN40), you can upgrade it with UC6580. Please contact Unicore FAE if necessary.
This section introduces the simplest way to fulfill the replacement. You can design your
circuits according to Figure 0-1 and Table 0-1. Make sure that DCDC_IN and VDD_IO use
the same power supply and note that you need to adjust the value of the DCDC output
inductor (L2), RF_IN matching inductor (L3) and RF_IN matching capacitor (C14).
Except the pins listed in Table 0-1, the other pins of the UC6580 (QFN40) and UC6226
(QFN40) are the same.
RF Short 50ohm Line
LDO_X
VMAIN
V_BCKP
LDO_X
VMAIN
VMAIN
VBCKP
：
1.7V~3 .6V
VMAIN
：
2.7V~3 .6V
V_DET
：
2.7V~3 .6V
Figure 0-1 Simplest design to replace UC6226