Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)
NBM7100ABQ

NBM7100ABQ Production

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

Auto

start

Pulse

ILOAD

NBM7100A

I²C

Yes

≥ 200 mA

NBM7100B

SPI

No

≥ 200 mA
Figure 1. IoT pulsed load profile
  • Product details
  • Documentation
  • Support
  • Ordering
  • Interactive datasheet

Product details

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: 20 nA (typ)

  • Peak conversion efficiency up to 93% 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

Applications

  • 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

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More information

Quality and reliability disclaimer

Support

Please contact us if you have any questions. If you are in need of design support, please fill in the technical support form, we will get back to you shortly.

Please visit our engineer exchange forum or contact us for further support.

Longevity

The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.

Sample

As a Nexperia customer you can order samples via our sales organization.

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. Check out the list of official distributors.

Interactive datasheet

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.

Interactive datasheet