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    首页产品索引BQ2031

    BQ2031

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    用户可选择充电算法的铅酸开关模式充电管理 IC

    制造商:TI

    产品信息

    描述 The bq2031 Lead-Acid Fast Charge IC is designed to optimize charging of lead-acid chemistry batteries. A flexible pulse-width modulation regulator allows the bq2031 to control constant-voltage, constant-current, or pulsed-current charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum for high charge current applications. A charge cycle begins when power is applied or the battery is replaced. For safety, charging is inhibited until the battery voltage is within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2031 provides trickle-currentcharging until the voltage rises into the allowed range or an internal timer runs out and places the bq2031 in a Fault condition. This procedure prevents high-current charging of cells that are possibly damaged or reversed. Charging is inhibited anytime the temperature of the battery is outside the configurable, allowed range. All voltage thresholds are temperature-compensated. The bq2031 terminates fast (bulk) charging based on the following:Maximum voltageSecond difference of cell voltage (2V)Minimum current (in constant-voltage charging)Maximum time-out (MTO) After bulk charging, the bq2031 provides temperature-compensated maintenance (float) charging to maintain battery capacity.特性Conforms to battery manufacturers' charge recommendations for cyclic and float charge Pin-selectable charge algorithms - Two-Step Voltage with temperature-compensated constant-voltage maintenance - Two-Step Current with constant-rate pulsed current maintenance - Pulsed Current: hysteretic, on-demand pulsed currentPin-selectable charge termination by maximum voltage, 2V, minimum current, and maximum time Pre-charge qualification detects shorted, opened, or damaged cells and conditions battery Charging continuously qualified by temperature and voltage limitsInternal temperature-compensated voltage reference Pulse-width modulation control - Ideal for high-efficiency switch-mode power conversion - Configurable for linear or gated current use Direct LED control outputs display charge status and fault conditions

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    BQ2031SN-A5G4TIIC LEAD ACID FAST CHARGE 16-SOIC 立即购买
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    BQ2031SN-A5TIIC LEAD ACID FAST CHARGE 16-SOIC 立即购买
    BQ2031PN-A5TICharger IC Lead Acid 16-PDIP 立即购买
    BQ2031PN-A5E4-- 立即购买

    技术资料

    标题类型大小(KB)下载
    太阳能充电解决方案为多节电池应用提供了窄电压 DCPDF377 点击下载
    2011 第四季度 模拟应用期刊PDF790 点击下载
    Simple MPPT based Lead acid charger using BQ2031PDF247 点击下载
    U-511 Switch-Mode Power Conversion Using the bq2031PDF167 点击下载
    U-510 Using the bq2031 to Charge Lead-Acid BatteriesPDF183 点击下载

    应用案例更多案例

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