bq2005
Fast-Charge IC for DualBattery Packs
Features General Description be used to gate an externally reg ulated charging cur rent. в€— Sequential fast charge and con ditioning of two NiCd or NiMH nickel
cadmium or nickel-metal hydride
bat tery packs The bq2005 Fast-Charge IC provides
com pre hen sive fast charge control
func tions to gether with high-speed
switching power control circuitry on a
mono lithic CMOS device for sequential
charge man age ment in dual battery
pack ap pli ca tions. Fast charge may be gin on ap pli ca tion
of the charg ing sup ply, re place ment of
the battery, or switch de pres sion. For
safety, fast charge is in hib ited unless/un til the bat tery tem per a ture and
volt age are within con fig ured lim its. в€— Hysteretic PWM switch-mode cur rent regulation or gated control of
an ex ter nal reg u la tor
в€— Easily integrated into sys tems or
used as a stand-alone charger
в€— Pre-charge qual i fi ca tion of tem per ature and volt age
в€— Direct LED outputs dis play bat tery
and charge sta tus
в€— Fast-charge ter mi na tion by
∆ temperature/∆ time, -∆V, max i mum …
