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BQ24151

NOT RECOMMENDED FOR NEW DESIGNS

I2C 1cell 1.25A Buck battery charger with OTG and Automatic High Impedance Mode

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Data sheet

BQ24151

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

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 USB OTG integrated Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 85
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 USB OTG integrated Vin (min) (V) 4 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 20 3.96 mm² 1.8 x 2.2
  • Charge Faster than Linear Chargers
  • 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%
  • 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-V Maximum Operating Input Voltage
  • Built-In Input Current Sensing and Limiting
  • Integrated Power FETs for Up To 1.25-A Charge Rate
  • Programmable Charge Parameters through I2C Interface (up to 3.4 Mbps):
    • Input Current
    • Fast-Charge/Termination Current
    • Charge Voltage (3.5 V to 4.44 V)
    • Safety Timer
    • 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
  • Safety Timer with Reset Control
  • 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 – bq24150
  • Automatic High Impedance Mode – bq24151
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery): 2.5 V to 4.5 V
    • Output Voltage for VBUS: 5.05 V
  • 1.976 x 1.946mm 20-Pin WCSP Package
  • APPLICATIONS
    • Mobile and Smart Phones
    • MP3 Players
    • Handheld Devices
  • Charge Faster than Linear Chargers
  • 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%
  • 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-V Maximum Operating Input Voltage
  • Built-In Input Current Sensing and Limiting
  • Integrated Power FETs for Up To 1.25-A Charge Rate
  • Programmable Charge Parameters through I2C Interface (up to 3.4 Mbps):
    • Input Current
    • Fast-Charge/Termination Current
    • Charge Voltage (3.5 V to 4.44 V)
    • Safety Timer
    • 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
  • Safety Timer with Reset Control
  • 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 – bq24150
  • Automatic High Impedance Mode – bq24151
  • Boost Mode Operation for USB OTG:
    • Input Voltage Range (from Battery): 2.5 V to 4.5 V
    • Output Voltage for VBUS: 5.05 V
  • 1.976 x 1.946mm 20-Pin WCSP Package
  • APPLICATIONS
    • Mobile and Smart Phones
    • MP3 Players
    • Handheld Devices

The bq24150/1 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 bq24150/1 integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.

The bq24150/1 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, bq24150/1 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 is reported to the host using the I2C interface.

During the charging process, the bq24150/1 monitors its junction temperature (TJ) and reduces the charge current once TJ increases to approximately 125°C. To support USB OTG device, bq24150/1 provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150/1 is available in 20-pin WCSP package.

The bq24150/1 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 bq24150/1 integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.

The bq24150/1 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, bq24150/1 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 is reported to the host using the I2C interface.

During the charging process, the bq24150/1 monitors its junction temperature (TJ) and reduces the charge current once TJ increases to approximately 125°C. To support USB OTG device, bq24150/1 provides VBUS (approximately 5.05 V) by boosting the battery voltage. The bq24150/1 is available in 20-pin WCSP package.
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Technical documentation

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Type Title Date
* Data sheet Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance* datasheet (Rev. A) 19 Jan 2010
Application note Building your own Battery Simulator 14 Oct 2013
User guide bq2415x YFF EVM (HPA256) (Rev. C) 21 Jun 2011
White paper Battery Chargers in USB OTG Devices 01 Jun 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Driver or library

BQ2415XSW-LINUX — Linux Driver for 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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Support software

BQ2415XEVM-SW — BQ2415x EVM Sowtware Setup

The BQ2415x EVM Software provides a software interface for the BQ24150/1 EVM boards. Use this software to change the BQ24150/1 IC registers via the USB Interface Adapter.

Supported products & hardware

Supported products & hardware

Products
Battery charger ICs
BQ24150A — I2C 1cell 1.25A Buck battery charger with OTG and 2KV HBM BQ24151 — I2C 1cell 1.25A Buck battery charger with OTG and Automatic High Impedance Mode BQ24151A — I2C 1cell 1.25A Buck battery charger with OTG and 2KV HBM & Automatic High Impedance Mode BQ24152 — I2C 1cell 1.25A Buck battery charger with OTG and no battery detection at power up BQ24155 — I2C 1cell 1.25A Buck battery charger
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DSBGA (YFF) 20 View options
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