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

BQ24140

ACTIVO

Cargador de modo conmutado de entrada doble 1,5 A compatible con USB-OTG

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BQ24140

ACTIVO
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Detalles del producto

Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 9 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 9 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 30 5.71999999999999912 mm² 2.2 x 2.5999999999999996
  • High-Efficiency Mini-USB/AC Battery Charger for
    Single-Cell Li-Ion and Li-Polymer Battery Packs
  • Charge Battery and Provide USB-OTG Support at the Same Time
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy: ±5% (100mA, 500mA)
    • Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0-125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery): 2.3V to 4.5V
    • Output for VBUS: 5.05V/500 mA
  • Input Voltage Based Dynamic Power Management Provides
    Protection Against Current Limited Adapters
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Added Security by Limiting
    Maximum Charge Voltage and Maximum Charge Current
  • 20-V Absolute Maximum Input Voltage Rating
  • 9.0-V Maximum Operating Input Voltage
  • Charge Faster than Linear Chargers
  • Built-in Input Current Sensing and Limiting
  • Integrated Power FETs for up to 1.5-A Charge Rate
  • Programmable Charge Parameters Through I2C Interface
    (up to 3.4 Mbps):
    • Input Current
    • Fast-Charge/Termination Current
    • Charge Voltage (3.5-4.44V)
    • Safety Timer with Reset Control
    • Safety Timer with Reset Control
    • Termination Enable
  • Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz
    With 0% to 99.5% Duty Cycle
  • Automatic High Impedance Mode for Low Power Consumption
  • Robust Protection
    • Reverse Leakage Protection Prevents Battery Drainage
    • Thermal Regulation and Protection
    • Input/Output Over Voltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • 2.35 × 2.65 mm 30-pin WCSP Package
  • High-Efficiency Mini-USB/AC Battery Charger for
    Single-Cell Li-Ion and Li-Polymer Battery Packs
  • Charge Battery and Provide USB-OTG Support at the Same Time
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy: ±5% (100mA, 500mA)
    • Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0-125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery): 2.3V to 4.5V
    • Output for VBUS: 5.05V/500 mA
  • Input Voltage Based Dynamic Power Management Provides
    Protection Against Current Limited Adapters
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Added Security by Limiting
    Maximum Charge Voltage and Maximum Charge Current
  • 20-V Absolute Maximum Input Voltage Rating
  • 9.0-V Maximum Operating Input Voltage
  • Charge Faster than Linear Chargers
  • Built-in Input Current Sensing and Limiting
  • Integrated Power FETs for up to 1.5-A Charge Rate
  • Programmable Charge Parameters Through I2C Interface
    (up to 3.4 Mbps):
    • Input Current
    • Fast-Charge/Termination Current
    • Charge Voltage (3.5-4.44V)
    • Safety Timer with Reset Control
    • Safety Timer with Reset Control
    • Termination Enable
  • Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz
    With 0% to 99.5% Duty Cycle
  • Automatic High Impedance Mode for Low Power Consumption
  • Robust Protection
    • Reverse Leakage Protection Prevents Battery Drainage
    • Thermal Regulation and Protection
    • Input/Output Over Voltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • 2.35 × 2.65 mm 30-pin WCSP Package

The bq24140 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The IC integrates two synchronous PWM chargers, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.

The IC charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, the IC automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status can be reported to the host using the I2C interface. During the charging process, the IC monitors its junction temperature (TJ) and reduces the charge current once TJ increases to 125°C typical. To support USB OTG device, the IC can provide VBUS (5.05V typical) by boosting the battery voltage. The IC is available in 30-pin WCSP package.

The bq24140 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The IC integrates two synchronous PWM chargers, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.

The IC charges the battery in three phases: conditioning, constant current and constant voltage. The input current is automatically limited to the value set by the host. Charge is terminated based on user-selectable minimum current level. A safety timer with reset control provides a safety backup for I2C interface. During normal operation, the IC automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status can be reported to the host using the I2C interface. During the charging process, the IC monitors its junction temperature (TJ) and reduces the charge current once TJ increases to 125°C typical. To support USB OTG device, the IC can provide VBUS (5.05V typical) by boosting the battery voltage. The IC is available in 30-pin WCSP package.
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Documentación técnica

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Tipo Título Fecha
* Data sheet 1.5A Dual Input Switchmode Charger with USB-OTG Support datasheet 05 ago 2011
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 31 dic 2019

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.

Soporte de software

SLUC266 — bq24140EVM software

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ24140 — Cargador de modo conmutado de entrada doble 1,5 A compatible con USB-OTG
Desarrollo de hardware
Placa de evaluación
BQ24140EVM-003 — Módulo de evaluación para cargador de modo conmutado de entrada doble BQ24140, 1,5 A con soporte USB
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Archivo Gerber

bq24140EVM-003 gerbers

SLUC296.ZIP (336 KB)
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Paquete Pasadores Descargar
DSBGA (YFF) 30 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

Soporte y capacitación

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

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