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電池充電器 IC

BQ24800

現行

支援混合動力升壓和電池升壓模式的 SMBus 1 至 4 節降壓電池充電控制器

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產品規格表

BQ24800

現行
產品規格表 立即訂購

產品詳細資料

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 150µs to enter 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
  • Hybrid Power Boost Mode to power up system from adapter and battery together
    • Ultra-fast transient response of 150µs to enter 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

The BQ24800 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 BQ24800 supports a two level input current limit (Peak Power mode) to fully utilize the adapter capabilities and reduce battery discharge. The BQ24800 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 BQ24800 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 BQ24800 supports battery only boost mode to boost the battery voltage above the minimum system operating voltage, providing more headroom to support system transients.

The BQ24800 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 BQ24800 supports a two level input current limit (Peak Power mode) to fully utilize the adapter capabilities and reduce battery discharge. The BQ24800 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 BQ24800 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 BQ24800 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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重要文件 類型 標題 格式選項 日期
* Data sheet BQ24800 SMBus 1- to 4-Cell Buck Battery Charge Controller With Peak Power, Hybrid Power Boost and Battery Only Boost Modes datasheet (Rev. A) PDF | HTML 2025年 1月 6日
Application note Autonomous Smart Battery Guide PDF | HTML 2021年 10月 15日

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BQ24800EVM — SMBus 2-S 至 4-S 混合動力升壓模式電池充電控制器評估模組

BQ24800EVM 評估模組 (EVM) 是具有混合升壓和處理器熱監控功能的 SMBus 2 芯至 4 芯混合動力升壓模式電池充電控制器。輸入電壓範圍介於 4.5 V 和 24 V 之間，可編程輸出為 2-4 芯充電電壓和 128-mA 至 8.128-A 充電電流。此 EVM 不包含 EV2400 介面裝置；必須另外訂購才能評估 BQ24800EVM。
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BQSTUDIO-STABLE — Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

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BQSTUDIO-TEST — Battery Management Studio (bqStudio) Software – Beta version downloads

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

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