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ルネサス エレクトロニクス株式会社 (Renesas Electronics Corporation) - 6月はプライド月間として、LGBTQ+の権利や文化、コミュニティについて啓発する世界的な活動月間です

特長

  • Fully integrated battery management with battery capacity measurement and programmable protection
  • Supports 3 to 7 series Li-ion or Li-Polymer cells
  • Operation voltage range: 4.0V to 40V
  • Low Power Sleep Mode with Hardware Protection: (25uA typ.)
  • Memory: 64kB Code Flash, 4kB Data Flash, and 5.5kB SRAM
  • 21 GPIO ports
  • Communication: I2C, UART, and CSI
  • High-precision A/D converters, 15-bit ADC for Voltage/Temperature, 18-bit coulomb counter
  • Protection: Short circuit, Charge/Discharge over current, Over/Under voltage
  • Regulator: 3.3V output
  • Low-side N-channel MOSFET drive for charge/discharge control
  • Cell balancing
  • 48-pin QFP package, 7.0mm x 7.0mm

説明

The RAJ240301 is Renesas' Li-ion battery fuel gauge IC (FGIC), integrating an MCU and an AFE into a single package. It offers advanced battery management capabilities, powered by a Renesas RL78 CPU core with multiple low-power modes that deliver high performance during ultra-low power operation.

Equipped with embedded flash memory on the MCU, similar to other RL78 family devices, it stores program instructions and data to execute critical battery management tasks. These include measuring battery voltage, current, and temperature, estimating remaining capacity, and providing over-current, over-voltage, and over-temperature protection. The RAJ240301 ensures reliable and efficient battery operation, making it a robust solution for modern power management needs.

パラメータ

属性
Series Cells3 to 7 Cells
Supply Voltage (V)4 - 40
Comm. InterfaceI2C, UART
Flash Memory (KB)64
Charge/Discharge FET ControlLow Side

パッケージオプション

Pkg. TypePkg. Dimensions (mm)Lead Count (#)
LFQFP7 x 7 x 1.648

製品比較

RAJ240301GFPRAJ240080DFPRAJ240090GFPRAJ240091GNP
Series Cells3 to 7 Cells2 to 5 Cells3 to 8 Cells3 to 7 Cells
Supply Voltage4.0 - 404.0 - 284.0 - 504.0 - 50
Comm. InterfaceI2C, UARTI2C, UARTCAN, I2C, UARTI2C, UART
Flash Memory (KB)6464128128
Charge/Discharge FET ControlLow SideHigh SideHigh / Low SideHigh / Low Side
Pkg. TypeLFQFPLFQFPLFQFP, LQFPQFN
Pkg. Dimensions (mm)7 x 7 x 1.67 x 7 x 1.710 x 10 x 1.6, 10 x 10 x 1.76 x 6 x 1.0

アプリケーション・ブロック図

Humanoid battery management system block diagram features cell balancing and monitoring, charge and discharge protection, pack voltage and current sensing, battery pack control, communications, auxiliary power, and active cooling.
ヒューマノイド用バッテリマネジメントシステム
安全なリアルタイムの電力管理、保護機能、およびバッテリ状態制御を実現する、ヒューマノイドロボット向け統合BMS。

その他アプリケーション

  • Vacuum Cleaner
  • Power Tool
  • Drone
  • E-Bike
  • Pedal-Assist Bicycle
  • Battery Backup System
  • Energy Storage System (ESS)

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Part NumberStatusSamplesStockPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pb (Lead) Free
RAJ240301A20GFP#HC3ActiveN/AOut of StockLFQFP48#Tape & Reel3Yes

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更に設計開発を進めるための製品を探してみましょう