mobile | classic
Dataweek Electronics & Communications Technology Magazine





Follow us on:
Follow us on Facebook Share via Twitter Share via LinkedIn


Search...

Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2017


 

Monolithic buck battery charger
15 November 2017, Power Electronics / Power Management

Analog Devices, which recently acquired Linear Technology, introduced the LTC4091, a complete lithium-ion battery backup management system for 3,45 V to 4,45 V supply rails that must be kept active during a long duration main power failure. The LTC4091 employs a 36 V monolithic buck converter with adaptive output control to provide power to a system load and enable high-efficiency battery charging from the buck output.

When external power is available, the device can provide up to 2,5 A of total output current and up to 1,5 A of charge current for single-cell 4,1 V or 4,2 V Li-Ion batteries. If the primary input source fails and can no longer power the load, the LTC4091 provides up to 4 A to the system output load from the backup Li-Ion battery via an internal ideal diode, and unlimited current if an external ideal diode transistor is used.

To protect sensitive downstream loads, the maximum output load voltage is 4,45 V. The device’s PowerPath control provides a seamless switchover between input power and backup power during a power fail event, and enables reverse blocking with a shorted input. Typical applications include fleet and asset tracking, automotive GPS data loggers and telematics systems, security systems, communications and industrial backup systems.

The LTC4091 includes 60 V absolute maximum input over-voltage protection, making the IC immune to high input voltage transients. The LTC4091’s battery charger provides two pin-selectable charge voltages optimised for Li-Ion battery backup applications: the standard 4,2 V, and a 4,1 V option that trades off battery run time for increased charge/discharge cycle life.

Other features include soft start and frequency foldback to control output current during startup and overload, as well as trickle charge, automatic recharge, low battery precharge, charge timer termination, thermal regulation and a thermistor pin for temperature-qualified charging.

The LTC4091 is housed in a low profile (0,75 mm) 22-pin, 3 mm x 6 mm DFN package with a backside metal pad for excellent thermal performance. The device operates from –40°C to 125°C in both E and I grades.

For more information contact Conrad Coetzee, Arrow Altech Distribution, +27 (0)11 923 9600, ccoetzee@arrow.altech.co.za, www.arrow.altech.co.za


Credit(s)
Supplied By: Arrow Altech Distribution (AAD)
Tel: +27 11 923 9600
Fax: +27 11 923 9884
Email: info@arrow.altech.co.za
www: www.arrow.altech.co.za
  Share on Facebook Share via Twitter Share via LinkedIn    

Further reading:

  • Navigating a way through GNSS
    16 May 2018, Arrow Altech Distribution (AAD), Telecoms, Datacoms, Wireless
    Having four major satellite navigation systems available worldwide is a big step forward for global navigational satellite systems.
  • Wireless power development system
    16 May 2018, Power Electronics / Power Management, Telecoms, Datacoms, Wireless
    Under the name 760308EMP-WPT-200W, Würth Elektronik eiSos and Infineon Technologies are offering a 200 Watt development system for wireless power transfer. What makes the development kit special is ...
  • Sigfox expansion software for LoRa dev kit
    16 May 2018, Arrow Altech Distribution (AAD), Telecoms, Datacoms, Wireless
    STMicroelectronics’ STM32Cube software ecosystem now offers a Sigfox expansion package (X-CUBE-SFOX) that includes a set of libraries, open routines and application examples to help reduce time to market. ...
  • PWM controllers for LED lighting
    16 May 2018, EBV Electrolink, Power Electronics / Power Management
    ON Semiconductor has announced two new QR PSR PWM controllers for LED lighting with power factor control (PFC) function. The dimmable NCL30386 and the non-dimmable NCL30388 provide options for designers ...
  • Reliable, affordable energy storage – the key to unlocking the renewables drive
    16 May 2018, Power Electronics / Power Management
    The power purchase agreements (PPAs) signed recently by state-owned power utility Eskom, ended three years of waiting and uncertainty, and represent a significant step towards a truly sustainable energy ...
  • PoE ICs for powered devices
    16 May 2018, NuVision Electronics, Power Electronics / Power Management
    Silicon Labs has released two new Power over Ethernet (PoE) powered device (PD) families that include all necessary high-voltage discrete components on a single chip. The Si3406x and Si3404 families support ...
  • Compact power modules
    16 May 2018, Arrow Altech Distribution (AAD), Power Electronics / Power Management
    STMicroelectronics’ new ACEPACK (Adaptable Compact Easier PACKage) modules provide cost-effective and highly integrated power conversion for 3-30 kW applications including industrial motor drives, air ...
  • DC-DC converters for railway applications
    16 May 2018, Conical Technologies, Power Electronics / Power Management
    Traco Power announced the release of its new TMR 3WIR and TMR 6WIR series DC-DC converters, delivering 3 Watts and 6 Watts of power, respectively, and certified for railway applications. Packaged in ...
  • Step-down power module
    16 May 2018, Power Electronics / Power Management
    With the MagI³C-VDMM (Variable Step Down MicroModule), Würth Elektronik eiSos is expanding its product series of power modules with high power density, very few external components and elevated electromagnetic ...
  • High-voltage contactors
    16 May 2018, Electrocomp, Switches, Relays & Keypads, Power Electronics / Power Management
    The new HVC200A from TDK is a bipolar, high-voltage contactor for the switching of high DC voltages and currents. It is designed for operating voltages of up to 450 V d.c. and a high continuous current ...
  • Driver for low-power LED strings
    16 May 2018, Infineon Technologies, Power Electronics / Power Management
    For driving low-power LED strings and strips supplied by a DC voltage source, Infineon Technologies’ BCR430U features extended flexibility in terms of voltage headroom. It is a linear LED controller IC ...
  • Synchronous switching regulators
    16 May 2018, Arrow Altech Distribution (AAD), Power Electronics / Power Management
    The L6986, L6986F and L6985F step-down monolithic switching regulators from STMicroelectronics offer input voltage capability up to 61 V, buck converters able to deliver output currents up to 6 A, and ...

 
 
         
Contact:
Technews Publishing (Pty) Ltd
1st Floor, Stabilitas House
265 Kent Ave, Randburg, 2194
South Africa
Publications by Technews
Dataweek Electronics & Communications Technology
Electronic Buyers Guide (EBG)

Hi-Tech Security Solutions
Hi-Tech Security Business Directory

Motion Control in Southern Africa
Motion Control Buyers’ Guide (MCBG)

South African Instrumentation & Control
South African Instrumentation & Control Buyers’ Guide (IBG)
Other
Terms & conditions of use, including privacy policy
PAIA Manual





 

         
    Classic | Mobile

Copyright © Technews Publishing (Pty) Ltd. All rights reserved.