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電池管理 IC
電池充電器 IC

BQ24230

現行

具動態電源管理、6.6V OVP 且適用 USB 的 0.5A 鋰離子充電器

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BQ21061 現行 500-mA 單芯線性充電器，具備 10-nA 運送模式、電源路徑、穩壓系統電壓與 LDO This product is a 500-mA 1-cell I2C linear charger with 10-nA IQ, power path and a LDO

BQ24230

現行
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產品詳細資料

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 0.5 Features BAT temp thermistor monitoring (hot/cold profile), 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) 0.5 Features BAT temp thermistor monitoring (hot/cold profile), 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
  • 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 500-mA Charge Current With Current Monitoring Output (ISET)
  • Programmable Input Current Limit up to 500 mA for Wall Adapters
  • Programmable Termination Current (bq24232)
  • Programmable Precharge 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
  • Small 3 mm × 3 mm 16-Lead QFN Package
  • 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
  • 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 500-mA Charge Current With Current Monitoring Output (ISET)
  • Programmable Input Current Limit up to 500 mA for Wall Adapters
  • Programmable Termination Current (bq24232)
  • Programmable Precharge 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
  • Small 3 mm × 3 mm 16-Lead QFN Package

The bq2423x series of devices are highly 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 ac adapter and support charge currents between 25 mA and 500 mA. The high-input-voltage range with input overvoltage protection supports low-cost, unregulated adapters. The USB input current limit accuracy and start-up sequence allow the bq2423x to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing poorly designed or incorrectly configured USB sources.

The bq2423x 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, this enables instant system turn-on even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, 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 bq2423x series of devices are highly 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 ac adapter and support charge currents between 25 mA and 500 mA. The high-input-voltage range with input overvoltage protection supports low-cost, unregulated adapters. The USB input current limit accuracy and start-up sequence allow the bq2423x to meet USB-IF inrush current specification. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing poorly designed or incorrectly configured USB sources.

The bq2423x 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, this enables instant system turn-on even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, 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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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 bq2423x USB-Friendly Lithium-Ion Battery Charger And Power-Path Management IC datasheet (Rev. J) PDF | HTML 2017/4/8
應用說明 Configuring Standalone Linear Power Path Chargers (Rev. A) PDF | HTML 2020/4/6
應用說明 BQ2423X external NTC control reference design 2019/3/22
應用說明 Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018/5/1
類比設計期刊 2Q 2016 Analog Applications Journal Issue 2016/4/26
類比設計期刊 Battery-charging considerations for low-power applications 2016/4/26
應用說明 Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 2012/11/8
應用說明 MSP430 Based Lithium-Ion Polymer Battery Charging and Gauging Solution Using USB (Rev. A) 2012/6/27

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開發板

BQ24230EVM — BQ24230 評估模組

This user’s guide describes the bq24072/3/4/5 and bq24320/2 (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 and bq24320/2 product (...)

使用指南: PDF | HTML
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參考設計

TIDA-00600 — 適用於 CC2530 ZigBee 無線 MCU 的電源和電池管理參考設計

TIDA-00600 的主要目標是為需要可充電電池和 DC 連接器電源的 ZigBee 系統提供小型化和成本最佳化的電源管理解決方案。TIDA-00600 設計提供了電源管理部分的測試資料、設計指南和 Gerber 文檔。

此參考設計採用了 LP5907（一款超小型 LDO，具有高 PSRR 和低雜訊）和 BQ24230（一款獨立式電池充電器）。

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