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電池管理 IC
電池充電器 IC

BQ24072

現行

獨立式 1 芯 1.5-A 線性充電器、電源路徑、4.2-V VBAT 和 VOUT=VBAT + 225mV

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
BQ25185 現行 具電源路徑和太陽能輸入支援的 1 芯 1A 獨立線性電池充電器 BQ25185 comes with wider Vin, higher battery discharge and solar input support.
BQ25188 現行 I2C，1A 單芯線性電池充電器，18V 輸入，PowerPath，運送模式與電池追蹤 New power path linear charger with I2C and better performance

BQ24072

現行
立即訂購

產品詳細資料

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 1.5 Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.35 Vin (max) (V) 6.4 Absolute max Vin (max) (V) 28 Control topology Linear Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 1.5 Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.35 Vin (max) (V) 6.4 Absolute max Vin (max) (V) 28 Control topology Linear Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 85
VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • Fully compliant USB charger
    • Selectable 100-mA and 500-mA maximum input current
    • 100-mA Maximum current limit ensures compliance to USB-IF standard
    • Input-based dynamic power management (VIN-DPM) for protection against poor USB sources
  • Functional Safety-Capable (BQ24074)
  • 28-V Input rating with overvoltage protection
  • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
  • Supports up to 1.5-A charge current with current monitoring output (ISET)
  • Programmable input current limit up to 1.5 A for wall adapters
  • System output tracks battery voltage (BQ24072)
  • Programmable termination current (BQ24074)
  • Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
  • Programmable pre-charge and fast-charge safety timers
  • Reverse current, short-circuit and thermal protection
  • NTC thermistor input
  • Proprietary start-up sequence limits inrush current
  • Status indication – charging/done, power good
  • Safety-Related Certification:
    • IEC 62368-1 Certification (BQ24072)
  • Fully compliant USB charger
    • Selectable 100-mA and 500-mA maximum input current
    • 100-mA Maximum current limit ensures compliance to USB-IF standard
    • Input-based dynamic power management (VIN-DPM) for protection against poor USB sources
  • Functional Safety-Capable (BQ24074)
  • 28-V Input rating with overvoltage protection
  • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
  • Supports up to 1.5-A charge current with current monitoring output (ISET)
  • Programmable input current limit up to 1.5 A for wall adapters
  • System output tracks battery voltage (BQ24072)
  • Programmable termination current (BQ24074)
  • Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
  • Programmable pre-charge and fast-charge safety timers
  • Reverse current, short-circuit and thermal protection
  • NTC thermistor input
  • Proprietary start-up sequence limits inrush current
  • Status indication – charging/done, power good
  • Safety-Related Certification:
    • IEC 62368-1 Certification (BQ24072)

The BQ2407x series of devices are integrated Li-Ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or an AC adapter and support charge currents up to 1.5 A. The input voltage range with input overvoltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407x to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configured USB sources.

The BQ2407x features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus enabling the use of a smaller adapter.

The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.

The BQ2407x series of devices are integrated Li-Ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or an AC adapter and support charge currents up to 1.5 A. The input voltage range with input overvoltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407x to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configured USB sources.

The BQ2407x features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus enabling the use of a smaller adapter.

The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 BQ2407x Standalone 1-Cell 1.5-A Linear Battery Charger with PowerPath datasheet (Rev. N) 2021/10/27
應用說明 Designing the TS Pin Network for Battery Chargers with Current-Based Battery NTC Temperature Sensing PDF | HTML 2026/6/22
設計指南 High-Efficiency 24-VAC to 5-V, 3.3-V Ref Design With Battery Backup and Charging PDF | HTML 2023/6/30
應用說明 Configuring Standalone Linear Power Path Chargers (Rev. A) PDF | HTML 2020/4/6
應用說明 Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018/5/1
技術文章 How to choose the right linear charger for your application PDF | HTML 2017/11/17
EVM User's guide bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion (Rev. E) PDF | HTML 2017/1/3
類比設計期刊 Battery-charging considerations for low-power applications 2016/4/26
Product overview Battery Management Solutions for Point of Sale Systems 2014/8/18
Product overview Power Bank Charger ICs 2013/2/25
應用說明 Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 2012/11/8
類比設計期刊 Designing a linear Li-Ion battery charger with power-path control 2009/5/1
類比設計期刊 Q2 2009 Issue Analog Applications Journal 2009/5/1
使用指南 Power-Path Li-Ion Charger Selection 2008/10/17

設計與開發

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開發板

BQ24072EVM — BQ24072 USB 鋰離子電池充電器和電源路徑管理評估模組 | 線性

This user’s guide describes the bq24072/3/4/5/9(T) and bq24230/2 (bqTiny-III™) evaluation module (EVM). The EVM provides a convenient method for evaluating the performance of a charge management and system power solution for portable applications using the bq24072/3/4/5/9(T) and (...)

使用指南: PDF | HTML
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參考設計

TIDA-00044 — USB 鋰離子電池充電器和電源路徑管理參考設計

This reference design delivers up to 1000 mA of continuous current to the battery output when programmed with a resistor on the ISET pin and is programmed at the factory for ~540mA. The USB current limit modes are selected by the ISET2 pin and limits current to a maximum of 500 mA (logic high) or (...)

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參考設計

TIDA-010932 — 具有電池備援的 24-VAC 功率級參考設計

此參考設計專門針對使用 24 VAC 電源的智慧空調與其它閘道建築自動化終端設備，提供高效率的功率級解決方案。此功率級採用 24-VAC 輸入，並產生 5 V 與 3.3 V 輸出軌，可在新增時為額外的負載點轉換器供電。此設計提供 LiPo 電池充電，並在供電不足時無縫切換至電池電源。BoosterPack 外型尺寸允許設計人員利用其它 launchpad 評估此電源架構，並且包含 LED 驅動器和電流感測功能。

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參考設計

TIDA-01358 — 適用於智慧空調、具有寬輸入電壓轉換器和備用電池的 24V AC 功率級參考設計

TIDA-01358 參考設計為智慧恆溫器及其他建築自動化終端設備，提供低物料成本 (BOM)、高效率的電源級解決方案。此功率級採用 24Vac 輸入，並產生 5V 與 3.3V 輸出軌，可在新增時為額外的負載點轉換器供電。此設計在 24Vac 供電不足時提供 LiPo 電池充電，並無縫切換至電池電源。電源路徑功能可提供電池供電輔助，允許系統負載暫態超過 24Vac 轉 DC 系統的電流限制，進而使用成本更低的寬輸入 Vin 降壓。
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參考設計

TIDA-01395 — 適用於智慧空調、具有寬輸入電壓轉換器和電池電量計的 24V AC 功率級參考設計

此參考設計為智慧型恆溫器與其他閘道建築自動化設計提供低 BOM 數量、高效率功率級。此功率級採用 24-V AC 輸入，並產生 5-V 與 3.3-V 輸出軌，可在新增時為額外的負載點轉換器供電。此設計在 24-V AC 供電不足時提供 LiPo 電池充電，並無縫切換至電池電源。電源路徑功能可提供電池供電輔助，允許負載暫態超過 24-V AC 轉 DC 系統的電流限制，進而使用成本更低的寬輸入電壓降壓。電池電量計幫助設計人員保留電池壽命並透過中央處理器做出更智慧的節能和系統功能決策來確保正常運作。
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