Inicio Circuitos integrados de gestión de baterías Circuitos integrados para cargadores de baterías
Inicio
Circuitos integrados de gestión de baterías
Circuitos integrados para cargadores de baterías

BQ25971

ACTIVO

Cargador de batería de tapa conmutada de 8 A y 1 celda con I2C para aplicaciones de carga en paralel

Haga su pedido ahora
Hoja de datos

BQ25971

ACTIVO
Hoja de datos Haga su pedido ahora

Detalles del producto

Number of series cells 1 Charge current (max) (A) 8 Vin (max) (V) 12 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 20 Control topology Flash Charger Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC Vin (min) (V) 3.2 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 8 Vin (max) (V) 12 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 20 Control topology Flash Charger Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC Vin (min) (V) 3.2 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 56 10.7999999999999988 mm² 3 x 3.5999999999999996
  • 97% Efficient power stage for 8-A fast charge
  • Patent pending switched cap charger architecture optimized for 50% duty cycle
    • Input voltage is 2x battery voltage (3.5 V to 4.65 V)
    • Output current is 2x of input current (up to
      4.5 A)
    • Reduces power loss across the cable
  • Integrated programmable protection features for safe operation
    • Input over-voltage protection (BUS_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • Input over-voltage with external OVP FET (VAC_OVP up to 17 V, BQ25970 only)
    • Battery over-voltage protection (BAT_OVP) with adjustable alarm
    • Output over-voltage (VOUT_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • IBAT over-current protection (BAT_OCP) with adjustable alarm
    • Switching MOSFET cycle by cycle current limit
    • Battery temperature monitoring
    • Connector Temperature Monitoring
  • Programmable settings for system optimization
    • Optional VBATREG and IBATREG regulation for system load and wall adapter transients (BQ25970 only with External OVP FET)
    • STAT, FLAG, and MASK options for interrupts
    • ADC Readings and configuration
  • Integrated 12-bit effective analog-to digital converter (ADC)
    • ±0.5% BUS Voltage
    • ±0.5% VOUT Voltage
    • –0.4% to 0.2% BAT Voltage with differential sensing
    • ±1.5% BAT Current at 6 A with external RSENSE
    • ±1% BAT Temperature
    • ±1% BUS Temperature
    • ±4°C Die temperature
  • 97% Efficient power stage for 8-A fast charge
  • Patent pending switched cap charger architecture optimized for 50% duty cycle
    • Input voltage is 2x battery voltage (3.5 V to 4.65 V)
    • Output current is 2x of input current (up to
      4.5 A)
    • Reduces power loss across the cable
  • Integrated programmable protection features for safe operation
    • Input over-voltage protection (BUS_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • Input over-voltage with external OVP FET (VAC_OVP up to 17 V, BQ25970 only)
    • Battery over-voltage protection (BAT_OVP) with adjustable alarm
    • Output over-voltage (VOUT_OVP)
    • Input over-current protection (BUS_OCP) with adjustable alarm
    • IBAT over-current protection (BAT_OCP) with adjustable alarm
    • Switching MOSFET cycle by cycle current limit
    • Battery temperature monitoring
    • Connector Temperature Monitoring
  • Programmable settings for system optimization
    • Optional VBATREG and IBATREG regulation for system load and wall adapter transients (BQ25970 only with External OVP FET)
    • STAT, FLAG, and MASK options for interrupts
    • ADC Readings and configuration
  • Integrated 12-bit effective analog-to digital converter (ADC)
    • ±0.5% BUS Voltage
    • ±0.5% VOUT Voltage
    • –0.4% to 0.2% BAT Voltage with differential sensing
    • ±1.5% BAT Current at 6 A with external RSENSE
    • ±1% BAT Temperature
    • ±1% BUS Temperature
    • ±4°C Die temperature

The BQ2597x is a 97% efficient, 8-A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be half the current delivered to the battery, reducing the losses over the charging cable as well as limiting the temperature rise in the application.

The dual-phase architecture reduces the input cap requirements as well as reducing the output voltage ripple. When used with a standard charger such as the BQ2589x, the system enables the fastest charging at the lowest power loss from pre-charge through CC, CV, and termination.

The device integrates all the necessary protection features to ensure safe charging, including input over-voltage and over-current protection, output over-voltage and over-current protection, temperature sensing for the battery and cable, and monitoring the die temperature.

The device includes a 12-bit effective analog-to-digital converter (ADC) to provide bus voltage, bus current, output voltage, battery voltage, battery current, bus temperature, bat temperature, die temperature, and other calculated measurements needed to manage the charging of the battery from the smart wall adapter or power bank.

The BQ2597x is a 97% efficient, 8-A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be half the current delivered to the battery, reducing the losses over the charging cable as well as limiting the temperature rise in the application.

The dual-phase architecture reduces the input cap requirements as well as reducing the output voltage ripple. When used with a standard charger such as the BQ2589x, the system enables the fastest charging at the lowest power loss from pre-charge through CC, CV, and termination.

The device integrates all the necessary protection features to ensure safe charging, including input over-voltage and over-current protection, output over-voltage and over-current protection, temperature sensing for the battery and cable, and monitoring the die temperature.

The device includes a 12-bit effective analog-to-digital converter (ADC) to provide bus voltage, bus current, output voltage, battery voltage, battery current, bus temperature, bat temperature, die temperature, and other calculated measurements needed to manage the charging of the battery from the smart wall adapter or power bank.

filter Buscar otro/a Circuitos integrados para cargadores de baterías
Descargar Ver vídeo con transcripción Video

Más información y disponibilidad de la muestra

La hoja de datos completa y otra información están disponibles. Solicitar ahora

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 1
Tipo Título Fecha
* Data sheet BQ25970, BQ25971 I2C Controlled Single Cell High Efficiency 8-A Switched Cap Fast Chargers With ADC datasheet (Rev. B) PDF | HTML 20 abr 2020

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.

Encapsulado Pines Símbolos CAD, huellas y modelos 3D
DSBGA (YFF) 56 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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

Ver todos los temas del foro en inglés

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.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

Videos