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Product Overview
The BQ294708DSGT from Texas Instruments is a secondary overvoltage protection IC designed for 4-series Li-ion battery packs. It monitors individual cell voltages and provides a programmable overvoltage threshold with high accuracy. Housed in a compact 8-WSON (2x2 mm) package, it is ideal for space-constrained applications requiring reliable battery protection.
Detailed Technical Specifications
| Parameter |
Value |
| Number of Cells |
4 |
| Overvoltage Threshold |
Programmable (3.0V to 4.5V) |
| Accuracy |
±25 mV |
| Supply Voltage |
2.5V to 10V |
| Quiescent Current |
1 µA (typical) |
| Operating Temperature |
-40°C to +85°C |
| Package |
8-WSON (2x2 mm) |
Key Features
- Secondary overvoltage protection for 4-series Li-ion cells
- Programmable overvoltage threshold via external resistors
- Low quiescent current (1 µA) for minimal battery drain
- High accuracy (±25 mV) ensures reliable protection
- Small 8-WSON package saves PCB space
- Internal hysteresis prevents oscillation
Target Applications
- 5G base station backup battery packs
- Automotive dashboard battery monitoring
- Power tools and cordless equipment
- Portable medical devices
- Energy storage systems (ESS)
Global Supply Chain & Wholesale Solutions
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BQ294708DSGT. Our core advantages include:
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and seals to ensure ESD protection and physical integrity.
產品概述
BQ294708DSGT 是德州儀器推出的二次過壓保護 IC,專為 4 串鋰離子電池組設計。它監控每個電芯的電壓,並提供可編程的過壓閾值,精度高。採用緊湊的 8-WSON(2x2 mm)封裝,適合空間受限且需要可靠電池保護的應用。
詳細技術參數
| 參數 |
數值 |
| 電芯數量 |
4 |
| 過壓閾值 |
可編程(3.0V 至 4.5V) |
| 精度 |
±25 mV |
| 供電電壓 |
2.5V 至 10V |
| 靜態電流 |
1 µA(典型值) |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
8-WSON(2x2 mm) |
核心特性
- 為 4 串鋰離子電芯提供二次過壓保護
- 通過外部電阻可編程過壓閾值
- 低靜態電流(1 µA),減少電池損耗
- 高精度(±25 mV),確保可靠保護
- 小型 8-WSON 封裝節省 PCB 空間
- 內部遲滯防止振盪
典型應用場景
- 5G 基站備用電池組
- 汽車儀表板電池監控
- 電動工具和無線設備
- 便攜式醫療設備
- 儲能系統(ESS)
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