Coin cell battery life booster with adaptive power optimization

The NBM7100A/B is a battery energy management device designed to maximize usable capacity from non-rechargeable, primary batteries when used in low-voltage, low-power applications requiring burst current loads. The devices overcome voltage drop and battery life limitations associated with extracting high pulse currents (Figure 1) from lithium primary batteries such as 3 V lithium manganese dioxide (LiMnO2) coin cells. which are commonly used in wireless, low-power IoT sensor applications.

The NBM7100A/B contains two stages of high efficiency DC-DC conversion and an intelligent learning algorithm. The first stage DC-DC conversion transfers energy from the lithium battery at a low constant current to a capacitive storage element. Once charged, a second DC-DC conversion cycle utilizes this stored energy to supply a regulated voltage with high pulse load current capability on the VDH output pin. The battery is never directly subjected to large load pulse currents, resulting in a longer, more predictable battery lifetime.

The proprietary learning algorithm monitors the energy used during repetitive load pulse cycles and optimizes first stage DC-DC conversion to minimize the residual charge in the storage capacitor.

A serial interface allows a microcontroller to change default configuration settings and read-back system information.

Table 1. Related devices

Type number

Bus interface








≥ 200 mA




≥ 200 mA

Figure 1. IoT pulsed load profile

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
NBM7100ABQ NBM7100ABQX 935691195115 SOT763-1 Order product

Features and benefits

  • Programmable constant battery load current: 2 mA to 16 mA

  • Protection against battery voltage dips (Brown-out)

  • Pulse output current: > 200 mA

  • Low ripple regulated programmable output voltage, VDH: 1.8 V to 3.6 V

  • Ultra-low standby current: < 50 nA

  • Peak conversion efficiency > 90% with adaptive optimization

  • Integrated fuel gauge

  • Small 16 pin lead-free package (SOT763-1/DHVQFN16; 2.5 mm × 3.5 mm × 0.85 mm)

  • Specified from -40 °C to +85 °C


  • Battery powered wireless microcontroller applications (IoT): Bluetooth®, LoRaWAN®, Sigfox™, LTE-M, NB-IoT, Zigbee, etc.
  • Industrial: temperature, occupancy, e-metering, electronic shelf label, asset tracking, irrigation monitoring

  • Consumer/wearable: location tags, heart rate monitor, blood glucose meter, remote controls, key fobs

Figure 1. Simplified Application


Type numberProduct statusBus interfaceAuto startStorage cap charge balance functionMax storage cap voltage (V)Pulse ILOAD [max] (mA)Package versionPackage name
NBM7100ABQProductionI²CYesNot Supported11200SOT763-1DHVQFN16

PCB Symbol, Footprint and 3D Model

Model NameDescription


Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
( 9356 911 95115 )

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicator
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
NBM7100Coin cell battery life booster with adaptive power optimizationData sheet2023-06-29
nexperia_document_leaflet_battery_life_booster_NBM5100_NBM7100Coin cell battery life boosterLeaflet2023-06-22
NBM7100ABQ_Nexperia_Product_ReliabilityNBM7100ABQ Nexperia Product ReliabilityQuality document2023-05-29
NBM5100_NBM7100_GUI_bert_v_1_9GUI for NBM5100 NBM7100 evaluation boardSoftware2023-10-27
UM90022NBM5100; NBM7100 Evaluation board moduleUser manual2023-07-11
SOT763-1_115DHVQFN16; Reel pack, SMD, 7" Q1/T1 product orientationPacking information2020-02-13


If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.


File nameTitleTypeDate
NBM5100_NBM7100_GUI_bert_v_1_9GUI for NBM5100 NBM7100 evaluation boardSoftware2023-10-27

PCB Symbol, Footprint and 3D Model

Model NameDescription

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
NBM7100ABQNBM7100ABQX935691195115SOT763-1_115- Order product


As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.