BQ25173-Q1
- AEC-Q100 qualified
for automotive applications
- Temperature grade 1: –40°C ≤ T A ≤ 125°C
- HBM ESD classification level 2
- CDM ESD classification level C4B
- 40-V load-dump tolerant to support charging back-up supercapacitor, 3-V to 18-V operating
- Automatic Sleep mode for low power consumption
- 350-nA output leakage current
- 2-µA input leakage current when charge disabled
- Support 1- to 4-cell supercapacitor charging 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
- ISET pin short protection
The BQ25173-Q1 is an automotive rated, 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 and 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, T REG, 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.
技術文件
| 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 | BQ25173-Q1 Automotive, Standalone 800-mA Linear Battery Charger for 1- to 4-Cell Supercapacitor datasheet | PDF | HTML | 2023/7/31 | ||
| 應用說明 | Designing the TS Pin Network for Battery Chargers with Current-Based Battery NTC Temperature Sensing | PDF | HTML | 2026/6/22 | |||
| Application brief | Designing a fast charging and discharging supercapacitor backup system for automotive applications | PDF | HTML | 2024/11/21 | |||
| 證書 | BQ25173Q1EVM EU Declaration of Conformity (DoC) | PDF | HTML | 2023/8/14 |
設計與開發
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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。
BQ25173Q1EVM — 適用於 1 芯至 4 芯超級電容器之 800mA 線性充電器的 BQ25173-Q1 評估模組
此評估模組的設計目的在於評估和測試 BQ25173-Q1 裝置的各種運作模式。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。