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電池管理 IC
電池充電器 IC

BQ25173

現行

適用於單芯至 4 芯超級電容器的 800-mA 線性充電器

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產品規格表

BQ25173

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry SuperCap Battery charge voltage (max) (V) 10.5 Absolute max Vin (max) (V) 40 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation, Input OVP Vin (min) (V) 3 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry SuperCap Battery charge voltage (max) (V) 10.5 Absolute max Vin (max) (V) 40 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation, Input OVP Vin (min) (V) 3 Rating Catalog Operating temperature range (°C) -40 to 125
WSON (DSG) 8 4 mm² 2 x 2
  • Input voltage up-to 40-V tolerant
  • Automatic Sleep mode for low power consumption
    • 350-nA leakage current
    • 2-µA input leakage current when charge disabled
  • Supports 1- to 4-cell supercapacitor
  • Supports charging supercapacitor from 0 V
  • External resistor programmable operation
    • FB pin to adjust supercapacitor regulation voltage
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±1% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • CE pin for charging function control
    • Open-drain output for status and fault indication
    • Open-drain output for power-good indication
  • Integrated fault protection
    • 18-V IN overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • ISET pin short/open protection
  • Input voltage up-to 40-V tolerant
  • Automatic Sleep mode for low power consumption
    • 350-nA leakage current
    • 2-µA input leakage current when charge disabled
  • Supports 1- to 4-cell supercapacitor
  • Supports charging supercapacitor from 0 V
  • External resistor programmable operation
    • FB pin to adjust supercapacitor regulation voltage
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±1% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • CE pin for charging function control
    • Open-drain output for status and fault indication
    • Open-drain output for power-good indication
  • Integrated fault protection
    • 18-V IN overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • ISET pin short/open protection

The BQ25173 is an integrated 800-mA linear charger for 1- to 4-cell supercapacitors targeted at space-limited applications. The device has a single power output that charges the supercapacitor. The system load can be placed in parallel with the supercapacitor; the charge current is shared between the system and supercapacitor.

During charging, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold, TREG, is exceeded. This feature allows for fast charging of a fully discharged supercapacitor.

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 function control. The charge voltage and fast-charge current are programmable through external resistors.

The BQ25173 is an integrated 800-mA linear charger for 1- to 4-cell supercapacitors targeted at space-limited applications. The device has a single power output that charges the supercapacitor. The system load can be placed in parallel with the supercapacitor; the charge current is shared between the system and supercapacitor.

During charging, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold, TREG, is exceeded. This feature allows for fast charging of a fully discharged supercapacitor.

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 function control. The charge voltage and fast-charge current are programmable through external resistors.
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最新 BQ25173-Q1 現行 適用具狀態針腳一至四芯超級電容器的車用 800-mA 可編程線性充電器 Automotive supercapacitor charger with larger QFN package and better thermals.

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類型 標題 日期
* Data sheet BQ25173 800-mA Linear Battery Charger for 1- to 4-Cell Supercapacitor datasheet 2021年 11月 15日
Application note How to Quickly and Safely Charge Supercapacitors PDF | HTML 2023年 3月 27日
Application brief Selecting the Correct Charger for Your Supercapacitor Designs PDF | HTML 2021年 12月 13日
User guide BQ25173EVM Evaluation Module User's Guide 2021年 11月 30日
Certificate BQ25173EVM EU RoHS Declaration of Conformity (DoC) 2021年 10月 20日

設計與開發

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開發板

BQ25173EVM — BQ25173 評估模組，適用於單芯至 4 芯超級電容器的 800-mA 線性電池充電器

BQ25173EVM 評估模組 (EVM) 的設計目的在於協助評估和測試 BQ25173 的各種運作模式，這是一款適用於單芯至 4 芯超級電容器的線性充電器 IC。充電電壓可利用 OUT 和 FB 之間的外部電阻分壓器調整。使用 ISET 上的外部電阻器，充電電流可設定爲 10 mA 至 800 mA。

使用指南: PDF
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  • 資格摘要
  • 進行中可靠性監測
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