現在提供此產品的更新版本

open-in-new 比較替代產品
功能與所比較的裝置相似
BQ25171-Q1 現行 適用於 1-2 節鋰離子、磷酸鐵鋰和 1-6 節鎳氫電池的車用 800mA 線性電池充電器 This product is an automotive 800-mA Linear Battery Charger for single and multicell Li-ion, LiFePO4 and NiMH

產品詳細資料

Vin (min) (V) 4.35 Vin (max) (V) 6.4 Absolute max Vin (max) (V) 28 Charge current (max) (A) 1.5 Control topology Linear Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Rating Automotive Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Battery charge voltage (min) (V) 4.1 Battery charge voltage (max) (V) 4.1 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 125
Vin (min) (V) 4.35 Vin (max) (V) 6.4 Absolute max Vin (max) (V) 28 Charge current (max) (A) 1.5 Control topology Linear Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Rating Automotive Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Battery charge voltage (min) (V) 4.1 Battery charge voltage (max) (V) 4.1 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 125
VQFN (RGT) 16 9 mm² 3 x 3
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4A
  • 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
  • 4.1-V Battery Regulation Voltage
  • 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
  • Battery Disconnect Function with SYSOFF Input
  • 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
  • Small 3 mm × 3 mm 16 Lead VQFN Package with Wettable Flank
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4A
  • 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
  • 4.1-V Battery Regulation Voltage
  • 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
  • Battery Disconnect Function with SYSOFF Input
  • 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
  • Small 3 mm × 3 mm 16 Lead VQFN Package with Wettable Flank

The bq24079QW-Q1 is an integrated Li-ion linear charger and system power-path management device targeted at space-constraint automotive applications such as telematics/eCall. The device can operate from 4.35 V to 6.4 V 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 bq24079QW-Q1 to meet the USB-IF inrush current specification. Additionally, the input dynamic power management (VIN-DPM) prevents the system load from crashing incorrectly configured USB sources.

The bq24079QW-Q1 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 along with the 4.1-V battery regulation voltage helps to extend battery life time by reducing the number of charge and discharge cycles on the battery, allowing for proper charge termination and enabling 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 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 bq24079QW-Q1 is an integrated Li-ion linear charger and system power-path management device targeted at space-constraint automotive applications such as telematics/eCall. The device can operate from 4.35 V to 6.4 V 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 bq24079QW-Q1 to meet the USB-IF inrush current specification. Additionally, the input dynamic power management (VIN-DPM) prevents the system load from crashing incorrectly configured USB sources.

The bq24079QW-Q1 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 along with the 4.1-V battery regulation voltage helps to extend battery life time by reducing the number of charge and discharge cycles on the battery, allowing for proper charge termination and enabling 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 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.

下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 2
類型 標題 日期
* Data sheet bq24079QW-Q1 Automotive Qualified 4.1-V Battery Voltage Li-Ion Battery Charger with NTC Monitoring and Power Path datasheet (Rev. B) PDF | HTML 2018年 11月 1日
Application note Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018年 5月 1日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BQ24075EVM — BQ24075 評估模組

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
Gerber 檔案

Linear Charger NTC Calculator

SLUC670.ZIP (350 KB)
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RGT) 16 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

內容係由 TI 和社群貢獻者依「現狀」提供,且不構成 TI 規範。檢視使用條款

若有關於品質、封裝或訂購 TI 產品的問題,請參閱 TI 支援。​​​​​​​​​​​​​​

影片