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BQ24138

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I2C-gesteuertes 1-Zellen-Abwärtsladegerät mit 4 uA Ruhestrom, 5 A, maximal 14 V Eingangsspannung

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BQ24138

AKTIV
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Produktdetails

Rating Catalog Operating temperature range (°C) to
Rating Catalog Operating temperature range (°C) to
DSBGA (YBG) 30 5.46 mm² 2.6 x 2.1
  • High-efficiency 5A, 1.5MHz, synchronous switch mode buck charger for single cell battery
    • >90% efficiency down to 10mA output current from 5V input
    • Charge current up to 5A in 80mA steps
    • Charge termination from 60 to 1000mA in 10mA steps
    • Flexible JEITA profile for safe charging over temperature
  • BATFET control to support shutdown and full system reset
    • 4µA quiescent current in battery only mode
    • 1.5µA quiescent current in ultra low power mode
    • 0.1µA battery leakage current in shutdown
  • Supports USB On-The-Go (OTG)
    • Boost mode operation with 3.84V to 7.52-V output
    • Programmable current limit up to 3.2A
  • Supports a wide range of input sources
    • 3.9V to 14 -V wide input operating voltage range with 22 -V absolute maximum input voltage
    • VINDPM threshold automatically tracks battery voltage
    • Input Current Optimizer (ICO) to maximize input power without overloading adapters
  • Efficient battery operation with 7mΩ BATFET
  • Narrow VDC (NVDC) power path management
    • System instant-on with depleted or no battery
    • Battery supplement when adapter is fully loaded
  • Flexible autonomous or I2C-controlled modes
  • Integrated 12-bit ADC for voltage, current, and temperature monitoring
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±5% charge current regulation
    • ±5% input current regulation
  • Safety
    • Battery temperature sensing
    • Thermal regulation and thermal shutdown
    • Battery/converter overcurrent protection
    • Charging safety timer
  • High-efficiency 5A, 1.5MHz, synchronous switch mode buck charger for single cell battery
    • >90% efficiency down to 10mA output current from 5V input
    • Charge current up to 5A in 80mA steps
    • Charge termination from 60 to 1000mA in 10mA steps
    • Flexible JEITA profile for safe charging over temperature
  • BATFET control to support shutdown and full system reset
    • 4µA quiescent current in battery only mode
    • 1.5µA quiescent current in ultra low power mode
    • 0.1µA battery leakage current in shutdown
  • Supports USB On-The-Go (OTG)
    • Boost mode operation with 3.84V to 7.52-V output
    • Programmable current limit up to 3.2A
  • Supports a wide range of input sources
    • 3.9V to 14 -V wide input operating voltage range with 22 -V absolute maximum input voltage
    • VINDPM threshold automatically tracks battery voltage
    • Input Current Optimizer (ICO) to maximize input power without overloading adapters
  • Efficient battery operation with 7mΩ BATFET
  • Narrow VDC (NVDC) power path management
    • System instant-on with depleted or no battery
    • Battery supplement when adapter is fully loaded
  • Flexible autonomous or I2C-controlled modes
  • Integrated 12-bit ADC for voltage, current, and temperature monitoring
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±5% charge current regulation
    • ±5% input current regulation
  • Safety
    • Battery temperature sensing
    • Thermal regulation and thermal shutdown
    • Battery/converter overcurrent protection
    • Charging safety timer

The BQ24138 is a highly-integrated 5A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer batteries. The design is highly integrated with built-in current sensing, loop compensation, input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The device uses NVDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. The 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 BQ24138 a truly flexible design.

The BQ24138 is a highly-integrated 5A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer batteries. The design is highly integrated with built-in current sensing, loop compensation, input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The device uses NVDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. The 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 BQ24138 a truly flexible design.
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* Data sheet BQ24138 I2 C Controlled, Single Cell 5A Charger With NVDC Power Path Management and USB OTG Boost Output datasheet PDF | HTML 28 Jan 2026

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