Reference Design

A system-level evaluation board that combines ROHM's IC and discrete products. We have already solved not only the characteristics of individual products but also the problems that may occur when combining them to build a system, thus contributing significantly to the reduction of development time for our customers.

(Battery Management Reference Design for All-solid-state Batteries)
Maxell's All-solid-state Battery × Nano Energy™ Collaboration Board

Maxell x ROHM


    This reference design enables easy consideration of battery management solutions using all-solid-state batteries from Maxell, making it ideal for monitoring applications in the consumer sector and measurement equipment in the industrial market.
    (Please contact a sales representative or click here for more information on the REFLVBMS002-EVK-001 reference board .)
    Generally, in addition to being less prone to leakage and electrolyte degradation than rechargeable batteries such as li-ion that use a liquid electrolyte, all-solid-state batteries are attracting attention as next-generation batteries due to their wide operating temperature range, longer life, and higher reliability.
    The REFLVBMS002 is a reference design that combines a charge control IC jointly developed with Maxell, ROHM’s power supply IC that incorporates original ultra-low current technology Nano Energy™, a reset IC, and Maxell’s all-solid-state battery (PSB401010H). Optimized for Maxell’s all-solid-state battery, the circuit provides a solution for the battery and power supply blocks that supports a wide range of applications.


    *Nano Energy™ is a trademark or registered trademark of ROHM Co., Ltd.


    • Equipped with Maxell's all-solid-state battery that delivers high heat resistance*1, long life*2, and increased safety*3 over a wide range of temperature
    • Boost DC-DC converter IC utilizing original ultra-low current consumption technology Nano Energy™ significantly extends battery life
    • Built-in linear charger capable of CCCV charging suitable for Maxell’s all-solid-state battery
    • Battery voltage can be monitored by mounting a reset IC (optional)

    *1 High heat resistance: ~125°C environments. Based on Maxell test conditions.
    *2 Long life: Life expectancy based on various evaluations, analysis, and calculations.
    *3 Increased safety: No ignition or smoke in various safety tests such as heating to 200°C, nail puncture, or external short circuits.


    Model No.
    Reference Board Part No.
    REFLVBMS002-EVK-001(Board Dimensions: 30mm × 21mm)
    Onboard BatteryMaxell's All-solid-state Battery [PSB401010H]
    Nominal Voltage: 2.3V, Battery Capacity: 8mAh
    Boost DC-DC Quiescent Current180nA(Typ.)
    Output Voltage1.8V, 3.0V, 3.3V (Selectable via jumpers)
    Input Voltage2.9V~5.5V
    Charge MethodCCCV (already set to recommended charging conditions for the PSB401010H)
    EN FunctionCan be turned ON/OFF with onboard jumpers
    Battery Voltage Monitoring FunctionMonitor battery voltage and
    set the ON/OFF voltage of the DC-DC converter IC by mounting a reset IC (BU49xxFVE)

    Application Examples

    • Industrial equipment: Various measurement instruments, backup power supplies for infrastructure, etc.
    • Consumer devices: Monitoring applications, etc.

    Reference Board Image

    Onboard Products

    Part No.Dedicated ICDesign ManualPurchase Board
    PSB401010H Maxell's all-solid-state battery that provides high heat resistance, long life, and increased safetyReference Board User’s GuideContact Information
    BD7090NUV (Dedicated IC)Linear charger for Maxell’s all-solid-state battery
    BD8B133NVX (Under development)Boost DC-DC converter IC with 180nA quiescent current
    BU49xxFVELow voltage CMOS reset IC

    Design Data

    For inquires, please contact