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BQ24810

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SMBus 1-4 cell buck battery charge controller with hybrid power boost, battery boost mode and GaN

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Data sheet

BQ24810

ACTIVE
Data sheet Order now

Product details

Rating Catalog Number of series cells 1, 2, 3, 4 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH Charge current (max) (A) 8.128 Features IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.5 Vin (max) (V) 24 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Control interface SMBus Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1, 2, 3, 4 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH Charge current (max) (A) 8.128 Features IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.5 Vin (max) (V) 24 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Control interface SMBus Operating temperature range (°C) -40 to 85
WQFN (RUY) 28 16 mm² 4 x 4
  • Hybrid Power Boost Mode to power up system from adapter and battery together
    • Ultra-fast transient response of 100µs to enter Hybrid Power Boost Mode
    • Ultra-fast ICHG recovery within 60µs after exiting Hybrid Power Boost Mode
  • Battery Only Boost Mode to support larger system transients and extend battery run time
  • Peak power two-level input current limit to maximize the power from adapter and minimize battery discharge
  • Charge 1- to 4-cell battery pack from 4.5V to 24V adapter
  • High accuracy power and current monitoring for CPU throttling
    • Comprehensive PROCHOT profile
    • ± 2% Current monitor accuracy
    • ± 5% System Power Monitor Accuracy (PMON)
  • Automatic NMOS power source selection from adapter or battery
    • ACFET fast turn on in 100µs when exiting learn mode from battery removal
  • Programmable input current, charge voltage, charge and discharge current limit
    • ±0.4% Charge voltage (16mV/step)
    • ±2% Input current (64mA/step)
    • ±2% Charge current (64mA/step)
    • ±2% Discharge current (512mA/step)
  • High integration
    • Battery LEARN function
    • Battery present monitor
    • Boost Mode indicator
    • Loop compensation
    • BTST Diode
  • Enhanced safety features for overvoltage protection, overcurrent protection, battery, inductor, and MOSFET short-circuit protection
  • Switching frequency: 300kHz, 400kHz, 600kHz, and 800kHz
  • Realtime system control on ILIM pin to limit charge and discharge current
  • 0.65mA Adapter standby quiescent current for Energy Star
  • Input current limit (IINDPM) up to 21.12A/10.56A with 5mΩ/10mΩ sense resistor
  • VSYSMIN regulation up to 16.128V+2.3V during battery only boost mode
  • Hybrid Power Boost Mode to power up system from adapter and battery together
    • Ultra-fast transient response of 100µs to enter Hybrid Power Boost Mode
    • Ultra-fast ICHG recovery within 60µs after exiting Hybrid Power Boost Mode
  • Battery Only Boost Mode to support larger system transients and extend battery run time
  • Peak power two-level input current limit to maximize the power from adapter and minimize battery discharge
  • Charge 1- to 4-cell battery pack from 4.5V to 24V adapter
  • High accuracy power and current monitoring for CPU throttling
    • Comprehensive PROCHOT profile
    • ± 2% Current monitor accuracy
    • ± 5% System Power Monitor Accuracy (PMON)
  • Automatic NMOS power source selection from adapter or battery
    • ACFET fast turn on in 100µs when exiting learn mode from battery removal
  • Programmable input current, charge voltage, charge and discharge current limit
    • ±0.4% Charge voltage (16mV/step)
    • ±2% Input current (64mA/step)
    • ±2% Charge current (64mA/step)
    • ±2% Discharge current (512mA/step)
  • High integration
    • Battery LEARN function
    • Battery present monitor
    • Boost Mode indicator
    • Loop compensation
    • BTST Diode
  • Enhanced safety features for overvoltage protection, overcurrent protection, battery, inductor, and MOSFET short-circuit protection
  • Switching frequency: 300kHz, 400kHz, 600kHz, and 800kHz
  • Realtime system control on ILIM pin to limit charge and discharge current
  • 0.65mA Adapter standby quiescent current for Energy Star
  • Input current limit (IINDPM) up to 21.12A/10.56A with 5mΩ/10mΩ sense resistor
  • VSYSMIN regulation up to 16.128V+2.3V during battery only boost mode

The BQ24810 device is a high-efficiency, synchronous buck multi-chemistry battery charger supporting 1-, 2-, 3-, or 4-series Li+ cells, or other battery chemistries up to 19.2V.

Through SMBus, a host microcontroller programs charge current, charge voltage, input current limit and discharge current limit with high regulation accuracies. Additionally, the BQ24810 supports a two level input current limit (Peak Power mode) to fully utilize the adapter capabilities and reduce battery discharge. The BQ24810 provides adapter current (IADP), battery discharge current (IDCHG), and system power (PMON) signals to the host microcontroller and outputs the PROCHOT signal to throttle back CPU speed when needed.

The BQ24810 supports hybrid power boost mode to boost the battery voltage to supplement the adapter when system power demand is temporarily higher than the adapter is able to provide. When the adapter is not present, the BQ24810 supports battery only boost mode to boost the battery voltage above the minimum system operating voltage, providing more headroom to support system transients.

The BQ24810 device is a high-efficiency, synchronous buck multi-chemistry battery charger supporting 1-, 2-, 3-, or 4-series Li+ cells, or other battery chemistries up to 19.2V.

Through SMBus, a host microcontroller programs charge current, charge voltage, input current limit and discharge current limit with high regulation accuracies. Additionally, the BQ24810 supports a two level input current limit (Peak Power mode) to fully utilize the adapter capabilities and reduce battery discharge. The BQ24810 provides adapter current (IADP), battery discharge current (IDCHG), and system power (PMON) signals to the host microcontroller and outputs the PROCHOT signal to throttle back CPU speed when needed.

The BQ24810 supports hybrid power boost mode to boost the battery voltage to supplement the adapter when system power demand is temporarily higher than the adapter is able to provide. When the adapter is not present, the BQ24810 supports battery only boost mode to boost the battery voltage above the minimum system operating voltage, providing more headroom to support system transients.
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Technical documentation

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* Data sheet BQ24810 SMBus 1- to 4-Cell Buck Battery Charge Controller With Peak Power, Hybrid Power Boost and Battery Only Boost Modes datasheet PDF | HTML 21 Aug 2025
Application brief Using BQ24810's Battery-Only Boost Feature to Reduce Inrush Current PDF | HTML 19 Mar 2026
Technical article Hot plugging DC/DC converters safely PDF | HTML 02 Sep 2025
Certificate BQ24810 EU Declaration of Conformity (DoC) 13 Aug 2025

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Evaluation board

BQ24810EVM — BQ24810 evaluation module

The BQ24810 evaluation module (EVM) is an evaluation system for the BQ24810 IC. The BQ24810 IC is a buck-only battery charge controller with hybrid power boost mode, battery-only boost, and processor hot monitoring capability. The input voltage range is between 4.5V and 24V, with a programmable (...)
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WQFN (RUY) 28 Ultra Librarian
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