Nexperia
  • Products
    Bipolar transistors
    • Special feature transistors
    • 3-terminal adjustable shunt regulators
    • General purpose and low VCEsat bipolar transistors
    • LED driver / Constant current source
    • Resistor Equipped Transistors (RETs)
    Diodes
    • Automotive diodes
    • Zener diodes
    • Switching diodes
    • Schottky diodes and rectifiers
    • Recovery rectifiers
    • Silicon Germanium (SiGe) rectifiers
    ESD protection, TVS, signal conditioning
    • Automotive ESD protection and TVS
    • ESD protection
    • EMI solutions with integrated protection
    • Transient Voltage Suppressors (TVS)
    MOSFETs
    • Small signal MOSFETs
    • Power MOSFETs
    • Automotive MOSFETs
    • Application Specific MOSFETs
    GaN FETs
    Analog & Logic ICs
    • Automotive logic
    • Analog
    • Asynchronous interface logic
    • I/O expansion logic
    • Synchronous interface logic
    • Control logic
    Automotive
    • Automotive bipolar transistors
    • Automotive diodes
    • Automotive ESD protection and TVS
    • Automotive MOSFETs
    • Automotive logic
  • Applications
    Automotive
    • ADAS radar sensor module
    • Airbag controller with Safing MOSFET
    • Anti-locking braking systems
    • Automatic HVAC - BLDC blower motor
    • Cooling Fan
    • Electronic Fuel Injection
    • Electronic Power Steering
    • Adaptive Front LED lights
    • In-Vehicle Network (CAN / LIN / FlexRay) protection
    • Multimedia / infotainment bus protection
    • LED backlight for touch screens and cameras
    • Constant current source for interior LED lighting
    • High power, high efficiency DC/DC converter
    • Step-down DC/DC converter
    Mobile and Wearables
    • AR / VR glasses
    • Earbuds
    • GPS tracker
    • Smartwatch / fitness tracker
    • Smartphone
    • USB-Type-C AC/DC Wall Charger
    • Wired and wireless fast charging
    Industrial and Power
    • 12–48 V power tools and cordless equipment
    • 48/12 V DC/DC conversion (Telecoms / Server)
    • 5G marco / micro-cell power supplies
    • 80 PLUS Titanium Industrial PSU (GaN-based)
    • AC EV wallbox / Bidirectional DC wallbox
    • Electric forklift truck
    • Factory Automation and Industry 4.0
    • Fluid Pump Control
    • Hot swap for communications infrastructure
    • HVAC (Air conditioning)
    • Industrial Power Supply Units (PSUs)
    • Intelligent outdoor street lighting
    • Photovoltaic (PV) single-phase string inverter
    • Power Sourcing Equipment / Power over Ethernet
    • Smart electricity e-meter
    Computing and Consumer
    • E-Bike
    • High performance computing / Server
    • Hot swap for blade server
    • Medical diagnostics and therapy
    • Smoke / Fire detector
    • Solid-state drive (SSD)
    • Unmanned aerial vehicles (UAVs)
    Sub-systems
    • Antenna protection (NFC / Bluetooth)
    • Constant current source
    • ESD protection for USB Type-C connections
    • I2C voltage translation
    • Shift register based LED driver
    • Solenoid driver
    • USB4 connectivity and compatibility 
    • DC/DC conversion for MCU core supply
    • Battery-powered motor control drive (25-100 V)
    • Asynchronous step-down DC/DC
    • Synchronous step-down DC/DC
    Reference designs
    • H-bridge motor controller power supply circuit
    • Broadcom GAN039-650NBB half bridge evaluation board
    • USB Type-C ESD protection evaluation
    Application notes
    Interactive application notes
    • Tutorial
    • IAN50001 - Reverse battery protection in automotive applications
    • IAN50002 - LED side light SEPIC DC-to-DC converter
    • IAN50003 - Driving solenoids in automotive applications
    • IAN50004 - Using power MOSFETs in DC motor control applications
    • IAN50005 - Paralleling power MOSFETs in high power applications
    • IAN50007 - Conducted battery line transients
    • IAN50009 - Power MOSFET applications in automotive BLDC and PMSM drives
  • Quality
  • Support
  • Shop
  • Careers
  • About
  • News
  • Blogs
  • Shopping cart
  • Hello,
    • Distributor Portal
    • My Nexperia
    • My account
    • Logout
  • My Nexperia
  • English
  • 中文
Search
  • Search
  • Cross reference
  • Parametric search
Or cross multiple parts
  1. Home
  2. Applications
  3. Computing and Consumer
  4. Smoke / Fire detector
Preference settings under My Nexperia

You can change your Change Notification (CN) preferences in My Nexperia. These preferences set your CN view in My Nexperia and the CN emails.

By default you will see all Change Notifications that are available to you.

Change preferences
×

Smoke / Fire detector

Building safety has become an increasingly important issue across the world, especially in taller buildings, with early and accurate fire detection being vital to enable residents to safely evacuate in time. Smoke detectors play a vital role in this regard. With 10-year sealed battery alarms, battery replacements and late-night battery chirps are eliminated for a decade. However that means systems must be extremely efficient and reliable, while at the same time driving designs towards smaller, cost-effective batteries.

  • Overview

Block diagram

Highlighted components are Nexperia focus products

Products: DC:DC / Battery 

  • Battery FET: 12-20 V, P-channel, DFN2020
  • Boost FET: 12-20 V, N-channel, DFN2020 / TSOP6
  • Schottky rectifiers: 30 V, IF < 2 A
  • Zener diodes: SOD323 / DFN1006

Products: HMI / MMI

  • Voltage translation: Output drive ± 24 mA
  • Loadswitches: MOSFET, 12-20 V, DNF2020
  • UI switch: Bipolar transistor, ≤ 60 V
  • ESD protection (Wireless)

Design challenges

  • Low-cost, battery driven smoke / fire detectors are increasingly a regularory requirement across the world
  • Long lifetime requires low leakage Schottky rectifiers
  • Low Voltage Low Rds on MOSFETs in leaded SOT457 and leadless DFN2020 packages
  • Nexperia has a broad discretes portfolio which can be used for driving a discrete IR (highlighted) or PWM IR directly from the microcontroller

MOSFET and GaN FET Handbook

Drawing on over 20 years’ of experience, the MOSFET and GaN FET Application Handbook: A Power Design Engineer’s Guide brings together a comprehensive set of learning and reference materials relating to the use of MOSFETs and GaN FETs in real world systems.

Download your copy today 

Logic Application Handbook

Download Nexperia’s Logic Design Engineer’s Guide and get a better understanding of Logic products, their features and properties, timing and interfacing aspects as well as get an overview of application insights.

Download it now

Efficiency wins

Products

  • Bipolar transistors
  • Diodes
  • ESD protection, TVS, signal conditioning
  • MOSFETs
  • GaN FETs
  • Analog & Logic ICs
  • Automotive

Tools & Support

  • Packages
  • Quality portal
  • Request IMDS upload
  • Documentation center
  • Technical support

About Nexperia

  • Distributor locations
  • Careers
  • Contact
  • Monthly newsletter
  • Privacy Policy
  • Terms of use
  • Terms & Conditions
  • 粤ICP备17077980
  • Contact us

Ever used a chatbot for any questions? I’m called Nano. Why don’t you give it a try?

Nexperia Chatbot

Cart

This product was successfully added to your cart

Something went wrong, please try again later.

You have %% in your shopping cart.

Order more products
Checkout as guest
Checkout as My Nexperia user