製品詳細

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features IINDPM (Input current limit), Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 8 Vin (max) (V) 24 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 1.024 Battery charge voltage (max) (V) 19.2 Absolute max Vin (max) (V) 30 Control topology Switch-Mode Buck Control interface SMBus Features IINDPM (Input current limit), Input OVP, Power Path Vin (min) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (RUY) 28 16 mm² 4 x 4
  • 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
  • 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

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.

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.

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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 bq2477x NVDC Battery Charge Controller With System Power Monitor and Processor Hot Indicator データシート (Rev. C) PDF | HTML 2016年 12月 19日
アプリケーション・ノート Autonomous Smart Battery Guide PDF | HTML 2021年 10月 15日
EVM ユーザー ガイド (英語) bq2477x EVM User’s Guide (Rev. C) 2016年 11月 8日
アプリケーション・ノート Implementing Peak Power Shift Function With bq24770 2016年 5月 19日

設計および開発

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評価ボード

BQ24770EVM-540 — NVDC バッテリ・チャージ・コントローラ、SMBus 評価モジュール付き

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 (...)

ユーザー ガイド: PDF
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
WQFN (RUY) 28 Ultra Librarian

購入と品質

記載されている情報:
  • 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
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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