BQ25185
- 1A linear battery charger
- 3.0V to 18V input voltage operating range
- 25V tolerant input voltage
- External resistor programmable operation
- ILIM/VSET pin sets battery regulation voltage to 3.6V, 3.65V, 4.02V, 4.1V, 4.2V, 4.35V, or 4.4V
- ILIM/VSET pin sets input current limit to 100mA, 500mA, or 1100mA
- ISET pin sets charge current from 5mA to 1A
- Supports Li-ion, Li-poly, and LiFePO4 chemistries
- 115mΩ battery FET on-resistance
- Supports up to 3.125A discharge current for high system loads
- Power path management for powering the system and charging the battery
- Regulated system voltage (SYS) at 4.5V
- Configurable input current limit
- Supports USB suspend mode
- Battery tracking input voltage dynamic power management (VINDPM) for high-impedance input sources
- Dynamic power path management optimizes charging from weak adapters
- Ultra-low quiescent current
- 4µA in battery-only mode
- 30µA input adapter IQ in sleep mode
- 3.2µA battery discharge current in factory mode
- Integrated fault protection
- Input overvoltage protection (VIN_OVP)
- Battery undervoltage protection (BUVLO)
- Battery short protection (BATSC)
- Battery overcurrent protection (BATOCP)
- Input current limit protection (ILIM)
- Thermal regulation (TREG) and thermal shutdown (TSHUT)
- Battery thermal fault protection (TS)
- Safety timer fault
-
System short protection
-
System overvoltage protection
- Short and open protection on the ISET and ILIM/VSET pins
The BQ25185 is a linear battery charger IC optimized for small solution size and low quiescent current to extend battery life. The device is available in a small leadless package with a thermal pad for heat dissipation. The device supports up to 1A charging and system loads up to 3.125A.
The battery is charged using a standard Li-ion or LiFePO4 charging profile with three phases: precharge, constant current, and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is optimized for battery-to-battery charging with 3V minimum input voltage operation and can withstand 25V absolute maximum line transients. The device integrates a single pushbutton input to reduce the total solution footprint.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ25185 1-Cell, 1A Standalone Linear Battery Charger with Power Path, Factory Mode, and Battery Tracking VINDPM datasheet (Rev. A) | PDF | HTML | 2026年 1月 9日 |
| Application brief | Using Battery Tracking VINDPM to Make the Most of Solar and High-Impedance Power Sources | PDF | HTML | 2025年 3月 25日 | |
| Certificate | BQ25185EVM EU Declaration of Conformity (DoC) | 2023年 10月 26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)。
BQ25185EVM — 適用於 1 芯、1-A 獨立線性電池充電器的 BQ25185 評估模組
BQ25185 評估模組 (EVM) 的設計目的在於評估和測試 BQ25185 裝置的各種運作模式。此 EVM 設計為完整的測試友好型平台，並配有視覺指示器。BQ25185 是一款整合式電池充電管理 IC，專為搭載可充電電池的太陽能工業設備設計，整合了以下常見功能：線性充電，穩壓輸出，電池模式和電池追蹤 VINDPM。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DLH) | 10 | Ultra Librarian |
訂購與品質
- 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
- 晶圓廠位置
- 組裝地點
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。