
TE
CH
tm
T63H0002A
TM Technology Inc. reserves the right
P. 7
Publication Date: JUL. 2002
to change products or specifications without notice. Revision:A
Application Circuits
Application Hints
R1 and C1 will stabilize a supply voltage to
the T63H0002. A recommended R1 value is less
than 1kOhm. A larger value of R1 leads higher
detection voltage, makes some errors, because
of shoot through current flowed in the
T63H0002.
R2 and C2 will stabilize a V- pin voltage.
The resetting from over-discharge with
connecting a charger possibly be disabled by
larger value of R2.
Recommended value is less than 1kOhm.
After over-charge detection even connecting
battery pack to a system probably could not
allow a system to draw load current by a larger
R2xC2 time constant in the T63H0002.
Recommended C2 value is less than 1uF.
R1 and R2 may cause power consumption
over rating of power dissipation of the
T63H0002 and a total of “R1+R2” should be
more than 1kOhm.
The time constants R1xC1 or R2xC2 must
have a relation as below:
R1xC1<=R2xC2
Because in case that R1xC1, time constant for
VDD pin, would be larger than R2xC2, time
constant for V- pin then the T63H0002 might be
into a standby mode after detecting excess
current or short circuit current.