I2C 1-4 cell NVDC Buck battery charge controller with system monitor & processor hot indicator
製品の詳細
パラメータ
パッケージ|ピン|サイズ
特長
- Host-controlled NVDC-1 1S-4S Battery Charge Controller with 4.5-24 V Input Range
- Support SMBus (bq24770) and I2C (bq24773)
- System Instant-on Operation with no Battery or Deeply Discharged Battery
- Supplement Mode with Synchronous BATFET Control when Adaptor is fully loaded
- Ultra Fast Input Current DPM at 100 µs
- Ultra Low Quiescent Current of 600 µA and High PFM Light Load Efficiency >80% at 20 mA Load to Meet Energy Star and ErP Lot6.
- High Accuracy Power / Current Monitor for CPU Throttling
- Comprehensive PROCHOT Profile
- Input and Battery Current Monitor (IADP/IBAT)
- System Power Monitor (PMON)
- Programmable Input Current Limit, Charge Voltage, Charge Current and Minimum System Voltage Regulation
- ±0.5% Charge Voltage (16 mV/step)
- ±2% Input/charge Current (64 mA/step)
- ±2% 40x Input / 16x Discharge / 20x Charge Current Monitor
- Support Battery LEARN Function
- High Integration
- NMOS ACFET and RBFET Driver
- PMOS battery FET Gate Driver
- Internal Loop Compensation
- Independent Comparator
- Automatic Trickle Charge to Wake up Gas Gauge
- 600kHz to 1.2MHz Programmable Switching Frequency
概要
The bq2477x is high-efficiency, synchronous, NVDC-1 battery charge controllers, offering low component count for space-constraint, multi-chemistry battery charging applications.
The power path management allows the system to be regulated at battery voltage but does not drop below system minimum voltage (programmable). With this feature, the system keeps operating even when the battery is completely discharged or removed. The power path management allows the battery to provide supplement current to the system to keep the input supply from being overloaded.
The bq2477x provides drivers and power path management for N-channel ACFET and reverse blocking FET. The devices provides driver to control NVDC operation of external P-channel battery FET. It also drives high-side and low-side MOSFETs of the switching regulator.
The bq2477x monitors adapter current (IADP), battery charge/discharge current (IBAT) and system power (PMON). The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.
技術資料
種類 | タイトル | 英語版のダウンロード | 日付 | |
---|---|---|---|---|
* | データシート | bq2477x NVDC Battery Charge Controller With System Power Monitor and Processor Hot Indicator データシート | 2016年 12月 19日 | |
技術記事 | When to use rechargeable batteries in small battery applications | 2019年 10月 1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) | 英語版をダウンロード (Rev.R) | 2018年 9月 13日 | |
技術記事 | Using battery charger ICs to shrink your design for vacuum robots | 2018年 3月 21日 | ||
ユーザー・ガイド | bq2477x EVM User’s Guide | 2016年 11月 8日 | ||
技術記事 | Understanding battery charger features and charging topologies | 2016年 9月 19日 | ||
技術記事 | Selecting the right battery charger for industrial applications | 2016年 7月 13日 |
設計と開発
追加の事項や他のリソースを参照するには、以下のタイトルをクリックすると、詳細ページを表示できます。ハードウェア開発
概要
The bq2477x evaluation module (EVM) is an SMBus controlled NVDC-1 charge controller with N-CH MOSFET Selector and Current Monitoring. The input voltage range, for the buck converter, is between 6 and 24 V, with a programmable output of 1–4 cells (bq2477x) and a charge output current range of (...)
特長
- Host-controlled NVDC-1 1S-4S Battery Charge controller : bq24770 SMBus; bq24773 I2C
- Provide test point for /PROCHOT, IADP, IBAT, PMON, ILIM, REGN, ACOK, ACDET and switching node
- Programmable Input Current Limit, Charge Voltage, Charge Current and Minimum System
ソフトウェア開発
特長
- Real-time Gauge Dashboard for monitoring basic registers
- Full register access and logging
- Full data memory access and logging
- Product configuration and monitoring tools
- Import and export of product configurations
- Calibration and test automation
- Export of FS files for the target production environment
CAD/CAE シンボル
パッケージ | ピン数 | ダウンロード |
---|---|---|
WQFN (RUY) | 28 | オプションの表示 |
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 rating/ リフローピーク温度
- MTBF/FIT の推定値
- 原材料組成
- 認定試験結果
- 継続的な信頼性モニタ試験結果
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