BQ25606: BQ25606: please Confirm and review this BQ25606 circuit

SIM YUSEOG

Part Number: BQ25606

Hello TEAM.

I use BQ25606 chip, and so i need your help.

my SPEC(6800mAh charging)

1. adaptor(use to 2A), 1.5A charge
1.5A charging to battery(Li-ion)_6800mAh

2. No OTG,No I2C, No D+/D-

3. Use SYSOUT voltage as mcu power source (3V will be applied using DOWN CONVERTOR)

4. Check to battery capacity
-> Check battery voltage using ADC I/O (checkpoint is BAT_3.7V) (left of TP11)

Please look at this circuit below and let me know if you can review it

0 Michael Emanuel35 over 1 year ago

Hello,

My schematic review is as follows:

1. ICHG is set to 1.44 A.

2. ILIM is set to 1.45 A (KILIM is 478 A x Ohm).

3. VSET is 4.352 V if shorted to GND, 4.208 V is open.

4. Is CN18 supposed to have GND on one of its terminals?

Regards,

Mike Emanuel

0 SIM YUSEOG over 1 year ago in reply to Michael Emanuel35

4. CN18 is the connector connected to the battery, so it must have GND.

PS.

1. Should AGND and PGND be separated? Or can it be attached like the circuit diagram above?

2. What are GP pins? Can I leave this pin unconnected or floating it? I don't understand exactly.

thank you

0 Michael Emanuel35 over 1 year ago in reply to SIM YUSEOG

Hello,

Why does CN18 have 10 uF on GND then?

Layout Guideline 4 says to separate analog ground from power ground, so please separate them.

Can you please explain what is meant by "GP pins"?

Regards,

Mike Emanuel

Power management forum