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Part Number: BQ2002T
Hope all are fine
BQ2002T how can we set chargine current or it has inbuilt fast charging means what is the charging rate ?
Either the charging current is adjustible or fixed
Input : 5V 500mA USB
Battery: 2 cells NImh 1.2V /800 mAh
Charging current expected : 0.5C
Termination Style: Change in temperature /Cahnge in voltage
Can you guys give me a better circuit or recommend an IC which meets above specs in TI
An example circuit for BQ2002T can be found here https://www.ti.com/lit/ug/sluu007b/sluu007b.pdf?ts=1594405120778
The charge current is set by the LM317 through R7. Battery voltage is set through resistor divider on the BAT Pin. This can be made to work for 2-cell operation, see section "Battery Voltage and Temperature Measurements" of d/s
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In reply to Nick Brylski:
Thanks for the reply
My doubt in the above circuit diagram
What is above output voltage and output current for LM317
And which resistor we need to adjust for the required output voltage .
In reply to Anand Sands:
And How the CC pin controls the charging current
R7 sets output current of LM317, Battery voltage is set by R9/R14.
The LM317 section of this circuit does not need to be modified to work for 2 cell. Only need to change R9 to 101k.
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