BQ2016
- Provides Accurate Measurement of Available Capacity in Nicd or NiMH Batteries
- Measures a Wide Dynamic-Current Range
- Requires <1 Square Inch of PCB Space for Easy Pack Integration
- Measures Charge Flow Using a Low-Offset V-to-F Converter
- Automatically Compensates Measurements for Rate and Temperature
- Supports 5 LEDs for Remaining Capacity Indication
- Provides a 1-Wire HDQ Communication Interface
- Packaging: 28-Pin SSOP
The bq2016 gas gauge IC for battery pack or in-system installation maintains an accurate record of available battery capacity. To integrate charge and discharge activity of the battery, the IC monitors a voltage drop across a sense resistor connected in series with the cells of the battery. The bq2016 compensates for battery temperature, charge/discharge rate, and battery self-discharge to the charge counter to provide available-capacity information across a wide range of operating conditions. The bq2016 works with NiCd or NiMH battery packs that have a capacity of 1 to 4.5 Ah and that are designed for high discharge rate applications such as power tools.
The VPFC input sets the initial full charge reference of the battery pack. The bq2016 learns the true discharge capacity of the battery pack and automatically updates the full-charge reference during the course of a discharge cycle from full to empty. The remaining capacity is reported as the ratio between the actual discharge capacity and the full-charge capacity. The bq2016 communicates available capacity using 5 LEDs or the 1-wire communications port.
The 1-wire serial communication port (5Kb/s) allows an external processor to read and write the internal registers of the bq2016. Communication with the bq2016 is useful for pack testing or host processing of the available battery information. The internal registers include available battery capacity, voltage, temperature, current, and battery status. The RBI input maintains the register set in the event of pack voltage collapse due to a high discharge pulse.
The bq2016 circuit can operate from the cells in the pack. The REG output and an external FET provide a simple, inexpensive voltage regulator to supply power to the circuit from the cells.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | Gas Gauge IC for High Discharge Rates データシート (Rev. A) | 2002年 11月 21日 | |||
セレクション・ガイド | 電源 IC セレクション・ガイド 2018 (Rev. R 翻訳版) | 英語版 (Rev.R) | 2018年 9月 13日 | |||
アプリケーション・ノート | HDQ Communication Basics for TI Battery Monitor ICs | 2001年 5月 16日 |
設計および開発
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パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
SSOP (DBQ) | 28 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点