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Product Overview
The BQ2002ESNTR from Texas Instruments is a high-performance, low-cost NiCd/NiMH battery fast-charge management IC. It integrates a linear charger controller with programmable charge current, voltage, and timer termination. The device operates from a 4.5V to 5.5V supply and is available in an 8-pin SOIC package. It is designed for single-cell or multi-cell NiCd/NiMH battery packs, providing safe and efficient fast charging with automatic charge termination.
Detailed Technical Specifications
| Parameter |
Value |
| Input Voltage Range |
4.5V to 5.5V |
| Charge Current (Max) |
2A (external pass transistor) |
| Charge Termination |
Negative delta voltage (-ΔV), max temperature, max timer |
| Battery Chemistry |
NiCd, NiMH |
| Number of Cells |
1 to 4 cells |
| Package |
8-SOIC |
| Operating Temperature |
-20°C to +70°C |
| Charge Voltage Regulation |
1% accuracy |
Key Features
- Fast charge with -ΔV, max temperature, and max timer termination
- Programmable charge current via external resistor
- Low dropout voltage (200mV typical at 1A)
- Charge status output (open-drain)
- Automatic recharge
- Thermal shutdown protection
- Small 8-pin SOIC package
Target Applications
- Portable consumer electronics: digital cameras, handheld games, portable media players
- Industrial handheld devices: barcode scanners, portable data terminals
- Medical devices: portable patient monitors, infusion pumps
- Communication equipment: two-way radios, portable base stations
- Power tools: cordless screwdrivers, drills
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
BQ2002ESNTR. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
BQ2002ESNTR 是德州儀器 (TI) 推出的一款高性能、低成本鎳鎘/鎳氫電池快速充電管理 IC。它集成了線性充電控制器,具有可編程充電電流、電壓和定時器終止功能。該器件可在 4.5V 至 5.5V 電源下工作,採用 8 引腳 SOIC 封裝。專為單節或多節鎳鎘/鎳氫電池組設計,提供安全高效的快速充電,並具有自動充電終止功能。
詳細技術參數
| 參數 |
數值 |
| 輸入電壓範圍 |
4.5V 至 5.5V |
| 最大充電電流 |
2A(外部傳輸晶體管) |
| 充電終止方式 |
負電壓變化 (-ΔV)、最高溫度、最長時間 |
| 電池化學類型 |
NiCd、NiMH |
| 電池節數 |
1 至 4 節 |
| 封裝 |
8-SOIC |
| 工作溫度範圍 |
-20°C 至 +70°C |
| 充電電壓精度 |
1% |
核心特性
- 快速充電,支持 -ΔV、最高溫度和最長時間終止
- 通過外部電阻可編程充電電流
- 低壓差電壓(1A 時典型值 200mV)
- 充電狀態輸出(開漏)
- 自動再充電
- 熱關斷保護
- 小型 8 引腳 SOIC 封裝
典型應用場景
- 便攜式消費電子:數碼相機、手持遊戲機、便攜媒體播放器
- 工業手持設備:條碼掃描器、便攜數據終端
- 醫療設備:便攜病人監護儀、輸液泵
- 通信設備:對講機、便攜基站
- 電動工具:無繩螺絲刀、電鑽
環球供應鏈與批發合作夥伴方案
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我們的核心優勢包括:
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