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BQ25570
Nano Power Boost Charger and Buck Converter for Energy Harvester Powered Applications, QFN-20
Schematic Symbol
Pin Configuration (21 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | VSS | power_in |
| 2 | VIN_DC | power_in |
| 3 | VOC_SAMP | input |
| 4 | VREF_SAMP | passive |
| 5 | ~{EN} | input |
| 6 | VOUT_EN | input |
| 7 | VBAT_OV | input |
| 8 | VRDIV | output |
| 9 | VSS | passive |
| 10 | OK_HYST | input |
| 11 | OK_PROG | input |
| 12 | VOUT_SET | input |
| 13 | VBAT_OK | output |
| 14 | VOUT | input |
| 15 | VSS | passive |
| 16 | LBUCK | passive |
| 17 | VSS | passive |
| 18 | VBAT | power_in |
| 19 | VSTOR | power_out |
| 20 | LBOOST | passive |
| 21 | VSS | passive |
Footprint
ConfirmedPackage_DFN_QFN/QFN-20-1EP_3.5x3.5mm_P0.5mm_EP2x2mm
Pad Layout
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Pads (25)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | smd |