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电池充电器 IC

BQ24295

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具有 USB、可调节电压和 1.5A OTG 的 I2C 控制型单节电池 3A 电池充电器

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BQ25620 正在供货 具有 18V 最大输入、集成 ADC 和 OTG 输出的 I²C 控制型单芯 3.5A 降压电池充电器 BQ25620 is a wide VIN range and lower quiescent current option.

BQ24295

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产品详情

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 3 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 Vin (max) (V) 6.2 Absolute max Vin (max) (V) 15 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Control interface I2C Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 3 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 Vin (max) (V) 6.2 Absolute max Vin (max) (V) 15 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Control interface I2C Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² (4 mm × 4 mm)
  • 90% High Efficiency Switch Mode 3-A Charger
  • 3.9-V to 6.2-V Single Input USB-Compliant Charger with 6.4-V Over-Voltage Protection
    • USB Host or Charging Port D+/D– Detection Compatible to USB Battery Charger Spec (BC1.2)
    • Support Non-Standard 2-A/1-A Adapters Detection
    • Input Voltage and Current Limit Supports USB2.0 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
  • Synchronous Boost Converter in Battery Boost Mode with
    • Adjustable Output 4.55 V – 5.5 V at 1.5 A
    • 90% 5.1-V Boost Mode Efficiency
    • Fast OTG Startup (22 ms Typ)
  • 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
  • I2C Port for Optimal System Performance and Status Reporting
  • Autonomous Battery Charging with or without Host Management
    • Battery Charge Enable
    • Battery Charge 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 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 Boost Mode
    • Battery Charging Safety Timer
    • Thermal Regulation and Thermal Shutdown
    • Input and System Over-Voltage 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
  • 4mm × 4mm VQFN-24 Package
  • 90% High Efficiency Switch Mode 3-A Charger
  • 3.9-V to 6.2-V Single Input USB-Compliant Charger with 6.4-V Over-Voltage Protection
    • USB Host or Charging Port D+/D– Detection Compatible to USB Battery Charger Spec (BC1.2)
    • Support Non-Standard 2-A/1-A Adapters Detection
    • Input Voltage and Current Limit Supports USB2.0 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
  • Synchronous Boost Converter in Battery Boost Mode with
    • Adjustable Output 4.55 V – 5.5 V at 1.5 A
    • 90% 5.1-V Boost Mode Efficiency
    • Fast OTG Startup (22 ms Typ)
  • 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
  • I2C Port for Optimal System Performance and Status Reporting
  • Autonomous Battery Charging with or without Host Management
    • Battery Charge Enable
    • Battery Charge 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 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 Boost Mode
    • Battery Charging Safety Timer
    • Thermal Regulation and Thermal Shutdown
    • Input and System Over-Voltage 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
  • 4mm × 4mm VQFN-24 Package

The bq24295 is a highly-integrated switch-mode battery charge management and system power path management devices for 1 cell Li-Ion and Li-polymer battery in a wide range of power bank, tablet and other portable device applications.

Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports 3.9V – 6.2V USB input sources, including standard USB host port and USB charging port with 6.4V over-voltage protection. The bq24295 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 bq24295 detects the input source through D+/D– detection following the USB battery charging spec 1.2. In addition, the bq24295 detects non-standard 2A/1A adapters. The bq24295 supports battery boost operation by supplying adjustable voltage 4.55 – 5.5V (default 5.1V) on PMID pin with minimum current of 1.5A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This supplement mode operation prevents overloading the input source.

The devices initiate and complete a charging cycle without software control. It automatically detects the battery voltage and charges the battery in three phases: pre-conditioning, constant current and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automatically start another charging cycle.

The devices provide 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 bq24295 is available in a 24-pin, 4×4 mm2 thin VQFN package.

The bq24295 is a highly-integrated switch-mode battery charge management and system power path management devices for 1 cell Li-Ion and Li-polymer battery in a wide range of power bank, tablet and other portable device applications.

Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports 3.9V – 6.2V USB input sources, including standard USB host port and USB charging port with 6.4V over-voltage protection. The bq24295 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 bq24295 detects the input source through D+/D– detection following the USB battery charging spec 1.2. In addition, the bq24295 detects non-standard 2A/1A adapters. The bq24295 supports battery boost operation by supplying adjustable voltage 4.55 – 5.5V (default 5.1V) on PMID pin with minimum current of 1.5A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This supplement mode operation prevents overloading the input source.

The devices initiate and complete a charging cycle without software control. It automatically detects the battery voltage and charges the battery in three phases: pre-conditioning, constant current and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automatically start another charging cycle.

The devices provide 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 bq24295 is available in a 24-pin, 4×4 mm2 thin VQFN package.
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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 bq24295 I2C Controlled 3A Single Cell USB Charger With Narrow VDC 4.5-5.5V Adjustable Voltage at 1.5A Synchronous Boost Operation 数据表 (Rev. B) PDF | HTML 2016-12-30
应用手册 Selection of Single-Cell Buck Narrow VDC Switching Battery Chargers PDF | HTML 2022-11-10
应用手册 BQ2419x、BQ2429x、BQ2589x、BQ25898x、BQ2560x 和 BQ2561x 的 USB D+ D- 输入电流限值检测 PDF | HTML 英语版 PDF | HTML 2021-10-26
模拟设计期刊 如何让电源为电池充电提供最大功率 英语版 2014-6-6

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

BQ24295EVM-549 — 具有可调电压和 1.5A OTG 评估模块的 I2C 控制 3A 单节 USB 充电器

由 I2C 控制并采用窄 VDC 电源路径管理的 2.5A 单节电池充电器和 USB OTG，最大可支持 5V 电压和 1.5 ADC
用户指南: PDF
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应用软件和框架

TI-CHARGER-GUI — 用于 USB2ANY 和电池充电评估模块的 GUI 软件

TI-CHARGER-GUI 提供基于网络的或独立的图形用户界面，可辅助评估、设计、配置或测试电池充电器产品。该软件可实现对寄存器的全面访问，并提供一个简单接口用于发送时序命令。
支持的产品和硬件
支持软件

SLUC495 — bq24295, 96, 97 V0003 Setup Software

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RGE) 24 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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