BQ24297

ACTIVO

Cargador de batería de 1 celda y 3 A controlado por I2C con USB NVDC-1, tensión ajustable y USB OTG

Detalles del producto

Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 6.2 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) 15 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB D+/D-/BC1.2 integrated, USB OTG integrated Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 3 Vin (max) (V) 6.2 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) 15 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path, USB D+/D-/BC1.2 integrated, USB OTG integrated Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • 90% High efficiency Switch Mode 3-A charger
  • 3.9-V to 6.2-V Single input USB-compliant charger with 6.4-V overvoltage protection
    • USB Host or charging port D+/D- detection compatible to USB battery charger spec (BC1.2)
    • Supports nonstandard 2-A/1-A adapters detection (BQ24297)
    • Input voltage and current limit supports USB 2.0 and USB 3.0
    • Input current limit: 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A
  • USB OTG with adjustable output 4.55 V to 5.5 V at 1 A or 1.5 A
    • Fast OTG startup (22 ms typ)
    • 90% 5-V Boost Mode efficiency
    • Accurate ±15% Hiccup Mode overcurrent protection
  • Narrow VDC (NVDC) power path management
    • Instant system on with no battery or deeply discharged battery
    • Ideal diode operation in Battery Supplement Mode
  • 1.5-MHz Switching frequency for low profile 1.2-mm inductor
  • I 2C Port for optimal system performance and status reporting
  • Autonomous battery charging with or without host management
    • Battery charge enable and preconditioning
    • Charge termination and recharge
  • High Accuracy
    • ±0.5% Charge voltage regulation
    • ±7% Charge current regulation
    • ±7.5% Input current regulation
    • ±3% Output voltage regulation in USB OTG Boost Mode
  • High Integration
    • Power path management
    • Synchronous switching MOSFETs
    • Integrated current sensing
    • Bootstrap diode
    • Internal loop compensation
  • Safety
    • Battery temperature sensing for charging and discharging in OTG Mode
    • Battery charging safety timer
    • Thermal regulation and thermal shutdown
    • Input and system overvoltage protection
    • MOSFET Over-current protection
  • Charge status outputs for LED or host processor
  • Maximum power tracking capability by input voltage regulation
  • 20-µA Low battery leakage current and support Shipping Mode
  • 4.00-mm x 4.00-mm VQFN-24 package
  • Safety-Related Certifications:
    • TUV IEC 62368 Certification (BQ24297)
  • 90% High efficiency Switch Mode 3-A charger
  • 3.9-V to 6.2-V Single input USB-compliant charger with 6.4-V overvoltage protection
    • USB Host or charging port D+/D- detection compatible to USB battery charger spec (BC1.2)
    • Supports nonstandard 2-A/1-A adapters detection (BQ24297)
    • Input voltage and current limit supports USB 2.0 and USB 3.0
    • Input current limit: 100 mA, 150 mA, 500 mA, 900 mA, 1 A, 1.5 A, 2 A, and 3 A
  • USB OTG with adjustable output 4.55 V to 5.5 V at 1 A or 1.5 A
    • Fast OTG startup (22 ms typ)
    • 90% 5-V Boost Mode efficiency
    • Accurate ±15% Hiccup Mode overcurrent protection
  • Narrow VDC (NVDC) power path management
    • Instant system on with no battery or deeply discharged battery
    • Ideal diode operation in Battery Supplement Mode
  • 1.5-MHz Switching frequency for low profile 1.2-mm inductor
  • I 2C Port for optimal system performance and status reporting
  • Autonomous battery charging with or without host management
    • Battery charge enable and preconditioning
    • Charge termination and recharge
  • High Accuracy
    • ±0.5% Charge voltage regulation
    • ±7% Charge current regulation
    • ±7.5% Input current regulation
    • ±3% Output voltage regulation in USB OTG Boost Mode
  • High Integration
    • Power path management
    • Synchronous switching MOSFETs
    • Integrated current sensing
    • Bootstrap diode
    • Internal loop compensation
  • Safety
    • Battery temperature sensing for charging and discharging in OTG Mode
    • Battery charging safety timer
    • Thermal regulation and thermal shutdown
    • Input and system overvoltage protection
    • MOSFET Over-current protection
  • Charge status outputs for LED or host processor
  • Maximum power tracking capability by input voltage regulation
  • 20-µA Low battery leakage current and support Shipping Mode
  • 4.00-mm x 4.00-mm VQFN-24 package
  • Safety-Related Certifications:
    • TUV IEC 62368 Certification (BQ24297)

The BQ24296/BQ24297 are highly-integrated switch-mode battery charge management and system power path management devices for 1 cell Li-Ion and Li-polymer batteries in a wide range of smart phone and tablet applications.

Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charge time and extends battery life during discharging phase. The I 2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports 3.9-V to 6.2-V USB input sources, including standard USB host port and USB charging port with 6.4-V over-voltage protection. The device is compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. To set the default input current limit, the BQ24296 takes the result from the detection circuit in the system, such as USB PHY device and the BQ24297 detects the input source through D+/D- detection following the USB battery charging spec 1.2. In addition, the BQ24297 detects non-standard 2-A/1-A adapters. The device also supports USB On-the-Go operation by providing fast startup and supplying adjustable voltage 4.55-V to 5.5-V (default 5 V) on the VBUS with an accurate current limit up to 1.5 A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable). With this feature, the system keeps operating even when the battery is completely depleted or removed. When the input source current or voltage limit is reached, the power path management automatically reduces the charge current to zero and then starts discharges the battery until the system power requirement is met. This supplement mode operation keeps the input source from getting overloaded.

The device initiates and completes a charging cycle when host control is not available. It automatically charges the battery in three phases: pre-conditioning, constant current, and constant voltage. In the end, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. Later on, when the battery voltage falls below the recharge threshold, the charger automatically starts another charging cycle.

The charge device provides various safety features for battery charging and system operation, including negative thermistor monitoring, charging safety timer, and over-voltage/over-current protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable).

The STAT output reports the charging status and any fault conditions. The INT immediately notifies the host when a fault occurs.

The BQ24296 and BQ24297 are available in a 24-pin, 4.00 x 4.00 mm 2 thin VQFN package.

The BQ24296/BQ24297 are highly-integrated switch-mode battery charge management and system power path management devices for 1 cell Li-Ion and Li-polymer batteries in a wide range of smart phone and tablet applications.

Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charge time and extends battery life during discharging phase. The I 2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports 3.9-V to 6.2-V USB input sources, including standard USB host port and USB charging port with 6.4-V over-voltage protection. The device is compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. To set the default input current limit, the BQ24296 takes the result from the detection circuit in the system, such as USB PHY device and the BQ24297 detects the input source through D+/D- detection following the USB battery charging spec 1.2. In addition, the BQ24297 detects non-standard 2-A/1-A adapters. The device also supports USB On-the-Go operation by providing fast startup and supplying adjustable voltage 4.55-V to 5.5-V (default 5 V) on the VBUS with an accurate current limit up to 1.5 A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable). With this feature, the system keeps operating even when the battery is completely depleted or removed. When the input source current or voltage limit is reached, the power path management automatically reduces the charge current to zero and then starts discharges the battery until the system power requirement is met. This supplement mode operation keeps the input source from getting overloaded.

The device initiates and completes a charging cycle when host control is not available. It automatically charges the battery in three phases: pre-conditioning, constant current, and constant voltage. In the end, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. Later on, when the battery voltage falls below the recharge threshold, the charger automatically starts another charging cycle.

The charge device provides various safety features for battery charging and system operation, including negative thermistor monitoring, charging safety timer, and over-voltage/over-current protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable).

The STAT output reports the charging status and any fault conditions. The INT immediately notifies the host when a fault occurs.

The BQ24296 and BQ24297 are available in a 24-pin, 4.00 x 4.00 mm 2 thin VQFN package.

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Documentación técnica

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Tipo Título Fecha
* Data sheet BQ2429x I2C Controlled 3-A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG datasheet (Rev. D) PDF | HTML 14 abr 2023
Application note Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers PDF | HTML 10 nov 2022
Application note USB D+/D- Input Current Limit Detection PDF | HTML 30 dic 2020
EVM User's guide bq24296 and bq24297 EVM (PWR021) User’s Guide 28 ago 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

BQ24297EVM-021 — Cargador de USB NVDC-1 de una celda de 3 A controlado por I2C con tensión ajustable y módulo de eval

I2C Controlled 4.5A Single Cell Charger with Narrow VDC Power Path Management; Default Setting (BATREG = 4.208, ICHG = 2A, VINDPM = 4.36V) and USB OTG

The BQ24297EVM-021 requires USB Interface Adaptive Evaluation Module “USB-TO-GPIO” for I2C interface. If one is not already available to (...)

Guía del usuario: PDF
Software de aplicación y estructura

TI-CHARGER-GUI — Software GUI para su uso con USB2ANY y módulos de evaluación de carga de la batería

The TI-CHARGER-GUI offers a web-based or standalone graphical user interface to assist in the process of evaluating, designing with, configuring or testing battery charger products. The software provides full access to registers and an easy interface to send and sequence commands.
Soporte de software

SLUC495 bq24295, 96, 97 V0003 Setup Software

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ24295 Cargador de batería de 1 celda y 3 A controlado por I2C con USB, tensión ajustable y 1,5 A OTG BQ24296 Cargador reductor controlado por I2C de 1 celda y 3 A con tensión ajustable, USB OTG y regulación mí BQ24297 Cargador de batería de 1 celda y 3 A controlado por I2C con USB NVDC-1, tensión ajustable y USB OTG
Desarrollo de hardware
Placa de evaluación
BQ24295EVM-549 Cargador de una celda de 3 A controlado por I2C con tensión ajustable y módulo de evaluación 1,5 A O BQ24296EVM-021 Cargador de USB NVDC-1 de una celda de 3 A controlado por I2C con tensión ajustable y módulo de eval BQ24297EVM-021 Cargador de USB NVDC-1 de una celda de 3 A controlado por I2C con tensión ajustable y módulo de eval
Diseños de referencia

TIDA-00280 — Cargador de una sola celda de 3 A controlado por I2C USB NVDC con impulsor OTG síncrono de 1.5 A

TIDA-00280 is an evaluation module for fully-integrated single-cell NVDC 3A charger bq24296/bq24297 with 1.5A synchronous boost operation. This board could be used to evaluate the performance of USB detection, the flexibility to change the charging profile and OTG operation. The two charger ICs are (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RGE) 24 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

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Soporte y capacitación

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

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