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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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BQ2005STR датащи(PDF) 1 Page - Texas Instruments |
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BQ2005STR датащи(HTML) 1 Page - Texas Instruments |
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1 / 22 page  Features ∗ Sequential fast charge and con di- tioning of two NiCd or NiMH nickel cadmium or nickel-metal hydride batterypacks ∗ Hysteretic PWM switch-mode cur - rent regulation or gated control of anexternalregulator ∗ Easily integrated into systems or used as a stand-alone charger ∗ Pre-chargequalificationoftempera- ture and volt age ∗ Direct LED outputs display bat tery and charge sta tus ∗ Fast-chargeterminationby ∆ temperature/∆ time, -∆V,maximum volt age, max i mum tem per a ture, and maximumtime ∗ Optional top-off and pulse-trickle charging General Description The bq2005 Fast-Charge IC provides comprehensive fast charge control functions together with high-speed switching power control circuitry on a monolithic CMOS device for sequential charge man age ment in dual battery packapplications. In te gra tion of closed-loop cur rent con- trol circuitry allows the bq2005 to be the basis of a cost-effective solution for stand-alone and sys tem-integrated charg ers for bat ter ies of one or more cells. Switch-activated dis-charge-before-charge allows bq2005-based chargers to support bat- tery conditioning and capacity determi- nation. High-efficiency power con ver sion is ac- complished using the bq2005 as a hysteretic PWM controller for switch-mode regulation of the charging cur rent. The bq2005 may alternatively be used to gate an externally reg u- lated charging cur rent. Fast charge may begin on ap pli ca tion of the charg ing sup ply, re place ment of the battery, or switch depres sion. For safety, fast charge is in hib ited un- less/un til the bat tery tem per a ture and volt age are within con fig ured lim its. Temperature, voltage, and time are monitored throughout fast charge. Fast charge is ter mi nated by any of the fol low ing: n Rate of temperature rise ( ∆T/∆t) n Negative delta voltage (- ∆V) n Maximum voltage n Maximum temperature n Maximum time Af ter fast charge, op tional top-off and pulsed current maintenance phases are avail able. 1 Fast-Charge IC for Dual- Battery Packs bq2005 Pin Connections Pin Names SLUS079A - AU GUST 2000 G DCMD A Dis charge com mand in put, batteryA DVEN -DV en able TM1 Timer mode se lect 1 TM2 Timer mode se lect 2 TCO Temperaturecut-off TSA, Tem pera ture sense in put, TSB batteryA/B BATA, Bat tery volt age in put, BATB batteryA/B SNSA, Sense re sis tor in put , SNSB batteryA/B DIS A Dis charge con trol out put, batteryA CHA, Charge status out put, CHB batteryA/B FCCA, Fast charge com plete out put, FCC B batteryA/B VSS Sys tem ground VCC 5.0V ±10% power MODA, Charge cur rent con trol MODB out put, bat tery A/B |
Аналогичный номер детали - BQ2005STR |
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Аналогичное описание - BQ2005STR |
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