Renesas offers a dedicated single-package solution with an MCU and analog front end (AFE) for battery management systems that constantly monitors the battery state.

Safety Features

  • Built-in self-diagnostic functions for microcontroller and analog front-end (AFE)
  • Low power mode for safe storage
  • Protection functions (Over/Under voltage, Over charge/discharge current, Short current, Over/Under temperature)

High Accuracy

  • High-precision delta-sigma A/D converter specialized for current, voltage, and temperature detection
  • Battery level calculation takes battery deterioration into account
Battery Management Controllers Block Diagram

电源管理

产品选型表

    Processing table
    器件号
    Series Cells (#)
    Supply Voltage (V)
    Comm. Interface
    Flash Memory (KB)
    Charge/Discharge FET Control
    Pkg. Type
    RAJ240045DNP
    2 to 4 Series Li-ion Battery Fuel Gauge IC    		 2 to 4 Cells 4 - 25 I2C (SMBus), UART 64 High Side QFN32
    RAJ240047DNP
    2 to 4 Series Li-ion Battery Fuel Gauge IC    		 2 to 4 Cells 4 - 25 I2C (SMBus), UART 128 High Side QFN32
    RAJ240071DNP
    2 to 5 Series Li-ion Battery Fuel Gauge IC    		 2 to 5 Cells 4 - 25 I2C (SMBus), UART 32 High Side QFN32
    RAJ240075DNP
    2 to 5 Series Li-ion Battery Fuel Gauge IC    		 2 to 5 Cells 4 - 25 I2C (SMBus), UART 64 High Side QFN32
    RAJ240090GFP
    3 to 8 Series Li-ion Battery Fuel Gauge IC    		 3 to 8 Cells 4 - 50 CAN, I2C (SMBus), UART 128 High / Low Side LQFP64
    RAJ240100GFP
    3 to 10 Series Li-ion Battery Fuel Gauge IC    		 3 to 10 Cells 4 - 50 CAN, I2C (SMBus), UART 128 High / Low Side LQFP64
    RAJ240310GNP
    3 to 10 Series Li-ion Battery Fuel Gauge IC    		 10 8 - 50 I2C (SMBus), UART 64 Low Side QFN40
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product

    文档

    文档标题 类型 日期
    Battery Management Solutions Brochure
    PDF1.11 MB
    手册
    Battery Fuel Gauge IC Functional Safety
    PDF198 KB
    传单
    Lithium-Ion Battery Management Solution

    Learn about how Renesas' Li-ion battery management solution solves the issues of cell-balancing and safety.

    Video List
    Lithium-Ion Battery Management Solution