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BA3170

Trickle-charge IC for two-cell, lithium-ion batteries

ROHM Semiconductor 

Regulator ICs

FTiming chart

BA3170

FExternal components

Setting the “end point voltage”

Fig.3

Fig.2

Set the “end point voltage” Vbuf using resistors R1 and

R2.

Example:

To set Vbuf to 8.4V:

1.22 = R2 / (R1 ) R2) 8.4

R1 = 5.88 . . . R2

If R2 = 10kΩ, then

R1 = 58.7kΩ

∗ For measurement of the electrical characteristics, Vref and Vbuf are

shorted.

399

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