Coin cell battery life booster with adaptive power optimization

The NBM5100A/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 3.6 V lithium thionyl chloride (Li-SOCl2), which are commonly used in wireless, low-power IoT sensor applications.

The NBM5100A/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








≥ 150 mA




≥ 150 mA

Figure 1. IoT pulsed load profile

Features and benefits

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

  • Protection against battery voltage dips (Brown-out)

  • Pulse output current: > 150 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

  • Integrated capacitor voltage balancing circuit

  • 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 number Product status Bus interface Auto start Storage cap charge balance function Max storage cap voltage (V) Pulse ILOAD [max] (mA) Package version Package name
NBM5100BBQ Production SPI No Supported 5.5 150 SOT763-1 DHVQFN16


Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
Active M5100B SOT763-1
SOT763-1 SOT763-1_115


Part number Description Type Quick links Shop link
The NBM5100A/B evaluation board enables the evaluation of Nexperia battery booster products, which are integrated circuits intended to expand the lifetime and current capability of primary batteries (such as coin cell or Lithium Thionyl batteries). The integration of all necessary components and the associated intuitive GUI enable fast evaluation and development of new solutions.
Evaluation board
Quick links
Shop link

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
NBM5100BBQ NBM5100BBQX NBM5100BBQ rohs rhf rhf
Quality and reliability disclaimer


Documentation (10)

File name Title Type Date
NBM5100 Coin cell battery life booster with adaptive power optimization Data sheet 2023-06-29
SOT763-1 3D model for products with SOT763-1 package Design support 2019-10-03
nexperia_document_leaflet_battery_life_booster_NBM5100_NBM7100 Coin cell battery life booster Leaflet 2023-06-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
DHVQFN16_SOT763-1_mk plastic, dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 0.85 mm body Marcom graphics 2017-01-28
SOT763-1 plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body Package information 2023-05-11
SOT763-1_115 DHVQFN16; Reel pack, SMD, 7" Q1/T1 product orientation Packing information 2020-04-21
NBM5100BBQ_Nexperia_Product_Reliability NBM5100BBQ Nexperia Product Reliability Quality document 2023-05-29
NBM5100_NBM7100_GUI_bert_v_1_9 GUI for NBM5100 NBM7100 evaluation board Software 2023-10-27
UM90022 NBM5100; NBM7100 Evaluation board module User manual 2023-07-11


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 name Title Type Date
SOT763-1 3D model for products with SOT763-1 package Design support 2019-10-03

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
NBM5100BBQ NBM5100BBQX 935691194115 Active SOT763-1_115 3,000 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.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
NBM5100BBQ NBM5100BBQX 935691194115 SOT763-1 Order product