Texas Instruments BQ2002C Handleiding

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1

Features

➤Fastchargeofnickelcadmium

ornickel-metalhydridebatter-

ies

➤DirectLEDoutputdisplays

chargestatus

➤Fast-chargeterminationby-∆V,

maximumvoltage,maximum

temperature,andmaximum

time

➤Internalband-gapvoltageref-

erence

➤Selectablepulse-tricklecharge

rates

➤Low-powermode

➤8-pin300-milDIPor150-mil

SOIC

General Description

Thebq2002CFast-ChargeICisalow-

costCMOSbattery-chargecontroller

providingreliablechargetermination

forbothNiCdandNiMHbatteryappli-

cations.Controllingacurrent-limited

orconstant-currentsupplyallowsthe

bq2002Ctobethebasisforacost-

effectivestand-aloneorsystem-inte-

gratedcharger.Thebq2002Cinte-

gratesfastchargewithpulsed-trickle

controlinasingleICforchargingone

ormoreNiCdorNiMHbatterycells.

Fastchargeisinitiatedonapplication

ofthechargingsupplyorbattery

replacement.Forsafety,fastchargeis

inhibitedifthebatterytemperature

andvoltageareoutsideconfigured

limits.

Fastchargeisterminatedbyanyof

thefollowing:

n

Peakvoltagedetection(PVD)

n

Negativedeltavoltage(-∆V)

n

Maximumvoltage

n

Maximumtemperature

n

Maximumtime

Afterfastcharge,thebq2002Cpulse-

tricklesthebatteryperthepre-

configuredlimits.Fastchargemaybe

inhibitedusingtheINHpin.The

bq2002Cmayalsobeplacedinlow-

standby-powermodetoreduce

systempowerconsumption.

NiCd/NiMH Fast-Charge Management IC

bq2002C

TMTimer mode select input

LED

Charging status output

BATBattery voltage input

V

SS

System ground

1

PN-200201.eps

8-Pin DIP or

Narrow SOIC

2

3

4

8

7

6

5

TM

LED

BAT

V

SS

CC

INH

V

CC

TS

TSTemperaturesenseinput

V

CC

Supply voltage input

INHCharge inhibit input

CCCharge control output

Pin Connections

Pin Names

SLUS136 - AUGUST 2011

Product specificaties