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Circuitos integrados para cargadores de baterías

BQ24773

ACTIVO

Controlador de carga de batería reductor NVDC de 1-4 celdas I2C con monitor del sistema e indicador

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BQ24773

ACTIVO
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Detalles del producto

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface I2C Features IINDPM (Input current limit), Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface I2C Features IINDPM (Input current limit), Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (RUY) 28 16 mm² 4 x 4
  • Host-controlled NVDC-1 1S-4S Battery Charge Controller with 4.5-24 V Input Range
    • Support SMBus (bq24770) and I2C (bq24773)
    • System Instant-on Operation with no Battery or Deeply Discharged Battery
    • Supplement Mode with Synchronous BATFET Control when Adaptor is fully loaded
  • Ultra Fast Input Current DPM at 100 µs
  • Ultra Low Quiescent Current of 600 µA and High PFM Light Load Efficiency >80% at 20 mA Load to Meet Energy Star and ErP Lot6.
  • High Accuracy Power / Current Monitor for CPU Throttling
    • Comprehensive PROCHOT Profile
    • Input and Battery Current Monitor (IADP/IBAT)
    • System Power Monitor (PMON)
  • Programmable Input Current Limit, Charge Voltage, Charge Current and Minimum System Voltage Regulation
    • ±0.5% Charge Voltage (16 mV/step)
    • ±2% Input/charge Current (64 mA/step)
    • ±2% 40x Input / 16x Discharge / 20x Charge Current Monitor
  • Support Battery LEARN Function
  • High Integration
    • NMOS ACFET and RBFET Driver
    • PMOS battery FET Gate Driver
    • Internal Loop Compensation
    • Independent Comparator
    • Automatic Trickle Charge to Wake up Gas Gauge
  • 600kHz to 1.2MHz Programmable Switching Frequency
  • Host-controlled NVDC-1 1S-4S Battery Charge Controller with 4.5-24 V Input Range
    • Support SMBus (bq24770) and I2C (bq24773)
    • System Instant-on Operation with no Battery or Deeply Discharged Battery
    • Supplement Mode with Synchronous BATFET Control when Adaptor is fully loaded
  • Ultra Fast Input Current DPM at 100 µs
  • Ultra Low Quiescent Current of 600 µA and High PFM Light Load Efficiency >80% at 20 mA Load to Meet Energy Star and ErP Lot6.
  • High Accuracy Power / Current Monitor for CPU Throttling
    • Comprehensive PROCHOT Profile
    • Input and Battery Current Monitor (IADP/IBAT)
    • System Power Monitor (PMON)
  • Programmable Input Current Limit, Charge Voltage, Charge Current and Minimum System Voltage Regulation
    • ±0.5% Charge Voltage (16 mV/step)
    • ±2% Input/charge Current (64 mA/step)
    • ±2% 40x Input / 16x Discharge / 20x Charge Current Monitor
  • Support Battery LEARN Function
  • High Integration
    • NMOS ACFET and RBFET Driver
    • PMOS battery FET Gate Driver
    • Internal Loop Compensation
    • Independent Comparator
    • Automatic Trickle Charge to Wake up Gas Gauge
  • 600kHz to 1.2MHz Programmable Switching Frequency

The bq2477x is high-efficiency, synchronous, NVDC-1 battery charge controllers, offering low component count for space-constraint, multi-chemistry battery charging applications.

The power path management allows the system to be regulated at battery voltage but does not drop below system minimum voltage (programmable). With this feature, the system keeps operating even when the battery is completely discharged or removed. The power path management allows the battery to provide supplement current to the system to keep the input supply from being overloaded.

The bq2477x provides drivers and power path management for N-channel ACFET and reverse blocking FET. The devices provides driver to control NVDC operation of external P-channel battery FET. It also drives high-side and low-side MOSFETs of the switching regulator.

The bq2477x monitors adapter current (IADP), battery charge/discharge current (IBAT) and system power (PMON). The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.

The bq2477x is high-efficiency, synchronous, NVDC-1 battery charge controllers, offering low component count for space-constraint, multi-chemistry battery charging applications.

The power path management allows the system to be regulated at battery voltage but does not drop below system minimum voltage (programmable). With this feature, the system keeps operating even when the battery is completely discharged or removed. The power path management allows the battery to provide supplement current to the system to keep the input supply from being overloaded.

The bq2477x provides drivers and power path management for N-channel ACFET and reverse blocking FET. The devices provides driver to control NVDC operation of external P-channel battery FET. It also drives high-side and low-side MOSFETs of the switching regulator.

The bq2477x monitors adapter current (IADP), battery charge/discharge current (IBAT) and system power (PMON). The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.
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Documentación técnica

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* Data sheet bq2477x NVDC Battery Charge Controller With System Power Monitor and Processor Hot Indicator datasheet (Rev. C) PDF | HTML 19 dic 2016
Technical article Using battery charger ICs to shrink your design for vacuum robots PDF | HTML 21 mar 2018
EVM User's guide bq2477x EVM User’s Guide (Rev. C) 08 nov 2016

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.

Placa de evaluación

BQ24773EVM-540 — Controlador de carga de batería NVDC con módulo de evaluación SMBus

The bq2477x evaluation module (EVM) is an SMBus controlled NVDC-1 charge controller with N-CH MOSFET Selector and Current Monitoring. The input voltage range, for the buck converter, is between 6 and 24 V, with a programmable output of 1–4 cells (bq2477x) and a charge output current range of (...)

Guía del usuario: PDF
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Software de aplicación y estructura

BQSTUDIO — Software Battery Management Studio (bqStudio)

Battery Management Studio (bqStudio) ofrece un conjunto completo de herramientas robustas para ayudar con el proceso de evaluación, diseño, configuración, prueba o utilización de productos de gestión de baterías de TI. Esto incluye funciones que (...)
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WQFN (RUY) 28 Ver opciones
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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

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