L6924U

Applications information: charging process

Doc ID 14716 Rev 2

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7.5

Recharge flow chart

Figure 14.

Recharge flow chart

7.6

Recharge threshold

When, from an end-of-charge condition, the battery voltage goes below the recharging

threshold is 4.05 V.

7.7

Maximum charging time

To avoid the charging of a dead battery for a long time, the L6924U has the possibility to set

a maximum charging time starting from the beginning of the fast-charge phase. This timer

external capacitor (in nF) and is given by the following equation:

Equation 10

Note:

9

10

×

⎟

⎟

⎟

⎟

⎠

⎞

⎜

⎜

⎜

⎜

⎝

⎛

×

=

REF

PRG

BG

T

MAXCH

TPRG

V

R

V

K

T

C

E