Power & Power Management

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

Product Selection Table

    Processing table
    Series Cells
    Supply Voltage (V)
    Comm. Interface
    Flash Memory (KB)
    Charge/Discharge FET Control
    Pkg. Type
    Part Number
    RAA241200GBM
    Single Cell Li-ion Battery Management IC    		 1 Cell 2 - 5.5 I2C, UART 64 Low Side WLBGA16
    RAJ240045DNP
    2 to 4 Series Li-ion Battery Fuel Gauge IC    		 2 to 4 Cells 4 - 25 I2C, UART 64 High Side QFN32
    RAJ240047DNP
    2 to 4 Series Li-ion Battery Fuel Gauge IC    		 2 to 4 Cells 4 - 25 I2C, UART 128 High Side QFN32
    RAJ240071DNP
    2 to 5 Series Li-ion Battery Fuel Gauge IC    		 2 to 5 Cells 4 - 25 I2C, UART 32 High Side QFN32
    RAJ240075DNP
    2 to 5 Series Li-ion Battery Fuel Gauge IC    		 2 to 5 Cells 4 - 25 I2C, UART 64 High Side QFN32
    RAJ240090GFP
    3 to 8 Series Li-ion Battery Fuel Gauge IC    		 3 to 8 Cells 4 - 50 CAN, I2C, 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, UART 128 High / Low Side LQFP64
    RAJ240310GNP
    3 to 10 Series Li-ion Battery Fuel Gauge IC    		 3 to 10 Cells 8 - 50 I2C, 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

    Documentation

    Title
    		Type Date
    Battery Management Solutions Brochure
    PDF 1.11 MB     		Brochure
    Battery Fuel Gauge IC Filefish
    PDF 270 KB     		Flyer
    Battery Fuel Gauge IC Functional Safety
    PDF 198 KB     		Flyer
    3 items
    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