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

BQ24157S

ACTIVO

Cargador de batería reductor I2C de 1 celda y 1,25 A con OTG

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BQ24157S

ACTIVO
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Detalles del producto

Number of series cells 1 Charge current (max) (A) 1.25 Vin (max) (V) 6 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), USB OTG integrated Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1 Charge current (max) (A) 1.25 Vin (max) (V) 6 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), USB OTG integrated Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 125
DSBGA (YFF) 20 3.96 mm² 1.8 x 2.2
  • Integrated Power FETs for up to 1.55-A Charge
    Rate
  • Spread Spectrum Frequency Control for Improved
    EMI Performance
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy:
      ±5% (100 mA and 500 mA)
    • Charge Voltage Regulation Accuracy:
      ±0.5% (25°C), ±1% (0°C to 125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Factory Test-Mode for GSM Calibration Without a
    Battery
  • Input Voltage Based Dynamic Power
    Management (VIN DPM)
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Maximum Charge
    Voltage and Current Limiting
  • High-Efficiency Mini-USB/AC Battery Charger for
    Single-Cell Li-Ion and Li-Polymer Battery Packs
  • 20-V Absolute Maximum Input Voltage Rating
  • 6.5-V Maximum Operating Input Voltage
  • Programmable Charge Parameters through I2C
    Compatible Interface (up to 3.4 Mbps):
    • Input Current Limit
    • VIN DPM Threshold
    • Fast-Charge/Termination Current
    • Charge Regulation Voltage (3.5 to 4.44 V)
    • Low Charge Current Mode Enable/Disable
    • Termination Enable/Disable
  • 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 Overvoltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • Automatic Charging
  • Power Up System Without Battery
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery):
      3.2 to 4.5 V
    • Output for VBUS: 5.05 V, 350 mA
  • 2.1 × 2.0-mm, 20-Pin DSBGA Package
  • Pin-to-Pin Compatible With bq24157 and bq24158
  • Integrated Power FETs for up to 1.55-A Charge
    Rate
  • Spread Spectrum Frequency Control for Improved
    EMI Performance
  • High-Accuracy Voltage and Current Regulation
    • Input Current Regulation Accuracy:
      ±5% (100 mA and 500 mA)
    • Charge Voltage Regulation Accuracy:
      ±0.5% (25°C), ±1% (0°C to 125°C)
    • Charge Current Regulation Accuracy: ±5%
  • Factory Test-Mode for GSM Calibration Without a
    Battery
  • Input Voltage Based Dynamic Power
    Management (VIN DPM)
  • Bad Adaptor Detection and Rejection
  • Safety Limit Register for Maximum Charge
    Voltage and Current Limiting
  • High-Efficiency Mini-USB/AC Battery Charger for
    Single-Cell Li-Ion and Li-Polymer Battery Packs
  • 20-V Absolute Maximum Input Voltage Rating
  • 6.5-V Maximum Operating Input Voltage
  • Programmable Charge Parameters through I2C
    Compatible Interface (up to 3.4 Mbps):
    • Input Current Limit
    • VIN DPM Threshold
    • Fast-Charge/Termination Current
    • Charge Regulation Voltage (3.5 to 4.44 V)
    • Low Charge Current Mode Enable/Disable
    • Termination Enable/Disable
  • 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 Overvoltage Protection
  • Status Output for Charging and Faults
  • USB Friendly Boot-Up Sequence
  • Automatic Charging
  • Power Up System Without Battery
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery):
      3.2 to 4.5 V
    • Output for VBUS: 5.05 V, 350 mA
  • 2.1 × 2.0-mm, 20-Pin DSBGA Package
  • Pin-to-Pin Compatible With bq24157 and bq24158

The bq24157S 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 a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small DSBGA 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 battery voltage and user-selectable minimum current level. 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 after TJ increases to about 125°C. To support a USB OTG device, bq24157S can provide VBUS (5.05 V) by boosting the battery voltage. The IC is available in 20-pin DSBGA package.

The bq24157S 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 a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small DSBGA 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 battery voltage and user-selectable minimum current level. 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 after TJ increases to about 125°C. To support a USB OTG device, bq24157S can provide VBUS (5.05 V) by boosting the battery voltage. The IC is available in 20-pin DSBGA package.
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Documentación técnica

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* Data sheet bq24157S 1.55-A Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support datasheet (Rev. B) PDF | HTML 05 may 2015
Application note Building your own Battery Simulator 14 oct 2013

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

BQ24157EVM-697 — Módulo de evaluación de BQ24157EVM-697

The BQ24157EVM-697 evaluation module is a complete charger module for evaluating compact, flexible, high-efficiency, USB-friendly, switch-mode charge management solution for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The bq24157 integrates a (...)
Guía del usuario: PDF
No disponible en TI.com
Controlador o biblioteca

BQ2415XSW-LINUX — Controlador Linux para BQ2415X

The Linux driver supports the BQ2415x series of fully integrated switch-mode one-cell Li-ion chargers. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.

Linux mainline status

Available in Linux mainline: Yes
Available through git.ti.com: (...)

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
DSBGA (YFF) 20 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

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