BQ2007 datasheet(13/16 Pages) TI

13 / 16 page

bq2007

Impedance

Symbol

Parameter

Minimum

Typical

Maximum

Unit

Notes

DC input impedance: pins

TS, BAT, SNS, TCO

Ω

RPROG

Soft-programmed pull-up

resistor

150

200

Ω

MSEL, DSEL1, DSEL2, MULT,

QDSEL; resistor value

± 10% tol-

erance

RFLT

Float state external

resistor

-5

Ω

Timing (TA = 0 to +70°C; VCC ± 10%)

Symbol

Parameter

Minimum

Typical

Maximum

Unit

Notes

dFCV

Deviation of fast charge

safety time-out

0.84

1.0

1.16

At VCC =

±10%, TA = 0 to 60°C;

see Table 3

tREG

MOD output regulation

frequency

300

kHz

Typical regulation range;

VCC = 5.0V

tPEND

Charge pending time-out

Ratio of fast charge time-out;

see Table 4.

FCOM

Common LCD backplane fre-

quency

LCD segment frame rate

FALARM

Alarm frequency output

3500

kHz High tone

tPW

Pulse width for DCMD and

INH pulse command

µs

Signal valid time

tMCV

Valid period for VCELL >

VMCV

0.5

sec

If VCELL

≥ VMCV for tMCV during

charge or top-off, then a transition

is recognized as

a battery replacement.

Note:

Typical is at TA = 25°C, VCC = 5.0V.

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