Detalles del producto

Number of series cells 6 Charge current (max) (A) 2 Vin (max) (V) 5.5 Cell chemistry Lead Acid Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -20 to 70
Number of series cells 6 Charge current (max) (A) 2 Vin (max) (V) 5.5 Cell chemistry Lead Acid Battery charge voltage (min) (V) 0 Battery charge voltage (max) (V) 20 Absolute max Vin (max) (V) 7 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -20 to 70
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6
  • 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 current
  • Pin-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 limits
  • Internal 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
  • 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 current
  • Pin-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 limits
  • Internal 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

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 voltage
  • Second 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.

    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 voltage
  • Second 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.

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    Documentación técnica

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    Tipo Título Fecha
    * Data sheet Lead-Acid Fast-Charge IC datasheet 05 sep 1999
    Application note Simple MPPT based Lead acid charger using BQ2031 (Rev. A) 08 ago 2017
    Analog Design Journal 4Q 2011 Issue Analog Applications Journal 09 nov 2011
    Analog Design Journal Solar charging solution provides narrow-voltage DC/DC system bus for multicell 09 nov 2011
    User guide DV2031S2 Lead-Acid Charger Development System Control of On-Board p-FET (Rev. B) 16 mar 2007
    Application note U-510 Using the bq2031 to Charge Lead-Acid Batteries 05 sep 1999

    Diseño y desarrollo

    Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

    GUI para el módulo de evaluación (EVM)

    SLVC024 bq24715 EVM GUI Package

    Productos y hardware compatibles

    Productos y hardware compatibles

    Productos
    Circuitos integrados para cargadores de baterías
    BQ2000 Cargador de batería para multiquímica de modo de conmutación con terminación de detección de tensión BQ2000T Cargador de baterías para multiquímica de modo de conmutación con terminación dT/dt BQ2002 Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tiempo de desconexión Setup1 BQ2002C Controlador de carga de batería NiCd/NiMH con dV negativo, PVT BQ2002D Controlador de carga de batería NiCd/NiMH con terminación dT/dt BQ2002E Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tMTO Setup1 BQ2002F Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tiempo de desconexión Setup2 BQ2002G Controlador de carga de batería NiCd/NiMH con dV negativo, PVT y tMTO Setup2 BQ2002T Controlador de carga de batería NiCd/NiMH con terminación dT/dt y fallo de baja temperatura BQ2031 Cargador de batería de plomo ácido de modo de conmutación con algoritmos de carga seleccionables por BQ2057C Controlador de carga de batería de iones de litio de 1 celdas lineales con caída baja con AutoCompTM BQ24010 Cargador de batería lineal de iones de litio de 1 celda y 1 A con presencia de CA y detección de tem BQ24012 Cargador de batería lineal de iones de litio de 1 celda y 1 A con FET, posibilidad de carga y presen BQ24013 Cargador de batería lineal de iones de litio de 1 celda y 1 A con activación de carga y posibilidad BQ24200 Cargador de iones de litio de 500 mA y 4,2 V para aplicaciones de corriente limitada con detección d BQ24201 Cargador de iones de litio de 500 mA y 4,1 V para aplicaciones de corriente limitada con detección d BQ24202 Cargador de iones de litio de 500 mA y 4,2 V para aplicaciones de corriente limitada con estado de c BQ24203 Cargador de iones de litio de 500 mA y 4,1 V para aplicaciones de corriente limitada con estado de c BQ24205 Cargador de iones de litio de 500 mA y 4,1 V para aplicaciones de corriente limitada en MSOP-8 BQ24715 Controlador de carga de batería reductor NVDC de 2-3 celdas SMBus con selectores MOSFET de potencia
    Encapsulado Pines Símbolos CAD, huellas y modelos 3D
    PDIP (N) 16 Ultra Librarian
    SOIC (D) 16 Ultra Librarian

    Pedidos y calidad

    Información incluida:
    • RoHS
    • REACH
    • Marcado del dispositivo
    • Acabado de plomo/material de la bola
    • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
    • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
    • Contenido del material
    • Resumen de calificaciones
    • Monitoreo continuo de confiabilidad
    Información incluida:
    • Lugar de fabricación
    • Lugar de ensamblaje

    Soporte y capacitación

    Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

    El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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