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BQ25798
I2C controlled, 5A Buck-Boost battery charger (1-4 cell, Li-Ion / Li-Polymer), USB BC1.2 / HVDCP detection, 3.6..24V VBUS, 3..18.8V charge voltage regulation, 0.75..1.5 MHz, VQFN-29 (Texas RQM0029A)
Schematic Symbol
Pin Configuration (29 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | STAT | open_collector |
| 2 | VBUS | power_in |
| 3 | VBUS | passive |
| 4 | BTST1 | passive |
| 5 | REGN | power_out |
| 6 | D+ | bidirectional |
| 7 | D- | bidirectional |
| 8 | VAC2 | input |
| 9 | VAC1 | input |
| 10 | ACDRV2 | passive |
| 11 | ACDRV1 | passive |
| 12 | ~{QON} | input |
| 13 | ~{CE} | input |
| 14 | SCL | input |
| 15 | SDA | bidirectional |
| 16 | TS | input |
| 17 | ILIM_HIZ | input |
| 18 | BATP | input |
| 19 | BTST2 | passive |
| 20 | PROG | input |
| 21 | ~{INT} | open_collector |
| 22 | BAT | power_out |
| 23 | BAT | passive |
| 24 | SDRV | output |
| 25 | SYS | power_out |
| 26 | SW2 | power_out |
| 27 | GND | power_in |
| 28 | SW1 | power_out |
| 29 | PMID | power_out |
Footprint
ConfirmedPackage_DFN_QFN/Texas_RQM0029A_VQFN-29_4x4mm_P0.4mm
Pad Layout
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Pads (29)
| Number | Type |
|---|---|
| 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 |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |
| 26 | smd |
| 27 | smd |
| 28 | smd |
| 29 | smd |