產品詳細資料

Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 6.5 TI functional safety category Functional Safety-Capable Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, Input OVP, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.5 Rating Catalog Operating temperature range (°C) 0 to 125
Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 6.5 TI functional safety category Functional Safety-Capable Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, Input OVP, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.5 Rating Catalog Operating temperature range (°C) 0 to 125
WSON (DSQ) 10 4 mm² 2 x 2
  • Charging
    • 1% Charge voltage accuracy
    • 10% Charge current accuracy
    • Pin selectable USB 100 mA and 500 mA maximum input current limit
    • Programmable termination and precharge threshold, BQ24040 and BQ24045
    • High voltage (4.35 V) chemistry support with BQ24045
  • Protection
    • 30V Input rating; with 6.6 V or 7.1 V input overvoltage protection
    • Input voltage dynamic power management
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT Short-circuit protection and ISET short detection
    • Operation over JEITA range via battery NTC – 1/2 fast-charge-current at Cold, 4.06V at Hot, BQ24040 and BQ24045
    • Fixed 10 hour safety timer, BQ24040 and BQ24045
  • System
    • Automatic termination and timer disable mode (TTDM) for absent battery pack with thermistor, BQ24040 and BQ24045
    • Status indication – charging and done
    • Available in small 2 × 2 mm2 DFN-10 package
    • Integrated auto start function for production line testing, BQ24041
  • Functional Safety-Capable (BQ24040)
  • Safety-Related Certifications:
    • IEC 62368-1 CB Certification (BQ24040, BQ24045)
  • Charging
    • 1% Charge voltage accuracy
    • 10% Charge current accuracy
    • Pin selectable USB 100 mA and 500 mA maximum input current limit
    • Programmable termination and precharge threshold, BQ24040 and BQ24045
    • High voltage (4.35 V) chemistry support with BQ24045
  • Protection
    • 30V Input rating; with 6.6 V or 7.1 V input overvoltage protection
    • Input voltage dynamic power management
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT Short-circuit protection and ISET short detection
    • Operation over JEITA range via battery NTC – 1/2 fast-charge-current at Cold, 4.06V at Hot, BQ24040 and BQ24045
    • Fixed 10 hour safety timer, BQ24040 and BQ24045
  • System
    • Automatic termination and timer disable mode (TTDM) for absent battery pack with thermistor, BQ24040 and BQ24045
    • Status indication – charging and done
    • Available in small 2 × 2 mm2 DFN-10 package
    • Integrated auto start function for production line testing, BQ24041
  • Functional Safety-Capable (BQ24040)
  • Safety-Related Certifications:
    • IEC 62368-1 CB Certification (BQ24040, BQ24045)

The BQ2404x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.

The BQ2404x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer.

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 an 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 pre-charge current and termination current threshold are programmed through an external resistor on the BQ24040 and BQ24045. The fast charge current value is also programmable through an external resistor.

The BQ2404x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.

The BQ2404x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer.

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 an 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 pre-charge current and termination current threshold are programmed through an external resistor on the BQ24040 and BQ24045. The fast charge current value is also programmable through an external resistor.

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類型 標題 日期
* Data sheet BQ2404x 1A, Single-Input, Single Cell Li-Ion and Li-Pol Battery Charger datasheet (Rev. H) 2021年 2月 1日
Technical article Benefits of rechargeable batteries in real-time location system trackers PDF | HTML 2020年 8月 10日
Technical article Accelerate your electric mask design PDF | HTML 2020年 7月 1日
Functional safety information BQ24040 Pin FMA 2020年 1月 15日
Functional safety information BQ2404x FIT Rate 2019年 12月 20日
Application note BQ2404x, BQ2405x, and BQ2409x Frequently Asked Questions 2019年 2月 25日
Application note BQ24040 Quick Start Guide 2018年 6月 28日
Technical article How to choose the right linear charger for your application PDF | HTML 2017年 11月 17日
Analog Design Journal Battery-charging considerations for low-power applications 2016年 4月 26日
Product overview Battery Management Solutions for Point of Sale Systems 2014年 8月 18日
Product overview Battery Management Solutions for Wearable and Fitness Devices (Rev. C) 2014年 8月 18日
Application note Building your own Battery Simulator 2013年 10月 14日
Product overview Power Bank Charger ICs 2013年 2月 25日
User guide 1-A Single-Input, Single-Cell Li-Ion Battery Charger 2012年 12月 31日
Application note Selecting the Best bq2404x/5x/9x Single Cell Battery Charger for your Applicatio 2012年 11月 29日
Analog Design Journal 2Q 2012 Issue Analog Applications Journal 2012年 4月 26日
Analog Design Journal Charging a three-cell nickel-based battery pack with a Li-Ion charger 2012年 4月 26日
User guide 0.8-A, Single-Input Single-Cell Li-Ion Battery Charger UG 2009年 9月 29日

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開發板

BQ24040EVM — BQ24040 評估模組:1A 單輸入單芯鋰離子電池充電器

BQ24040 Evaluation Module: 1A Single-Input, Single-Cell Li-Ion Battery Charger

The bq2404x series of devices are highly integrated Li-ion linear charger devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter.The bq2404x has a single power (...)

使用指南: PDF
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Gerber 檔案

Linear Charger NTC Calculator

SLUC670.ZIP (350 KB)
參考設計

TIDA-00042 — 1A 單輸入、單芯鋰離子電池充電器參考設計

This reference design is targeted at space-limited portable applications. The devices in the design operate from either a USB port or AC adapter. The solution has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system (...)
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DSQ) 10 Ultra Librarian

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