Search for:	Search what?


	Jul 6, 2008

Newsletters

Subscribe Free to Product News Alerts

Receive customized, daily news on the products you want.
Subscribe View Sample

DC/DC Converter consumes 100 µA quiescent current.

August 19, 2005 - Step-down switching regulator Model LT3437 operates within VIN range of 3.3–60 V, making it suited for load dump or cold-crank conditions found in automotive applications. Rated at 500 mA, internal switch can deliver up to 400 mA of continuous output current at voltages as low as 1.25 V. Housed in 3 x 3 mm DFN package, unit features 200 kHz switching frequency, Burst Mode operation, external synchronization from 240–700 kHz, and soft-start capability.

Related categories: Electrical Equipment and Systems | Electronic Components and Devices

Archive Press Release
(Products mentioned in this Archive Press Release may or may not be available from the manufacturer.)

Release date: July 28, 2005

60V, 200kHz, 500mA (ISW) Step-Down DC/DC Converter Consumes Only 100uA Quiescent Current

MILPITAS, CA - July 28, 2005 - Linear Technology Corporation announces the LT3437, a 60V (with transients up to 80V) 200kHz step-down switching regulator with quiescent current under 100uA. The LT3437 operates within a VIN range of 3.3V to 60V, making it ideal for load dump or cold-crank conditions commonly found in automotive applications. Its 500mA internal switch can deliver up to 400mA of continuous output current at voltages as low as 1.25V. The LT3437's Burst Mode operation offers ultra-low quiescent current, well suited for applications such as automotive or telecom systems, which demand always-on operation and optimum battery life. The combination of its 3mm x 3mm DFN package (or thermally enhanced TSSOP-16E) and 200kHz switching frequency, which keeps external inductors and capacitors small, provides a very compact, thermally efficient footprint.

The LT3437 utilizes a high efficiency 500mA, 0.8 Ohm switch with the necessary oscillator, control and logic circuitry integrated into a single die. Special design techniques and a high voltage process enable high efficiency over a wide input voltage range while its current mode topology enables fast transient response and excellent loop stability. Other features include external synchronization (from 240kHz to 700kHz), soft-start capability and Burst Mode defeat for low noise applications.

Pricing for the LT3437EDD DFN version starts at $2.25. The LT3437IDD, which is tested and guaranteed to operate from a -40°C to 125°C operating junction temperature, is priced at $2.70 each. The LT3437EFE TSSOP-16E version pricing starts at $2.30 each. All prices are for 1,000-piece quantities and all versions are available from stock.

Summary of Features: LT3437

• Wide Input Range: 3.3V to 60V

• Load Dump (Input Transient) Protection to 80V

• 500mA Peak Switch Current

• Burst Mode Operation: 100uA Quiescent Current

• Burst Mode Operation Defeat

• 200kHz Switching Frequency

• Saturating Switch Design: 0.8 Ohm On-Resistance

• 1.25V Feedback Reference Voltage

• Easily Synchronizable

• Soft-Start Capability

• Small 3mm x 3mm DFN-10 or Thermally Enhance TSSOP-16E Package

Company Background

Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, and many other analog functions. Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.

LT, LTC and Burst Mode are registered trademarks of Linear Technology Corp.

Worldwide Contacts

North America and General Information

John Hamburger

Tel: (408) 432-1900 ext. 2419

jhamburger@linear.com

Doug Dickinson

Tel: (408) 432 1900 ext. 2233

ddickinson@linear.com

Contacts:

Marketing:
Doug Dickinson
USA
Phone: 408-432-1900 ext 2233

E-mail this person

General Information:
John Hamburger
USA
Phone: 408-432-1900 ext 2419

E-mail this person

Company Information:
Name: Linear Technology Corp.
Address: 1630 McCarthy Blvd.
City: Milpitas
State: CA
ZIP: 95035-7417
Country: USA
Phone: 408-432-1900
FAX: 408-434-6441
http://www.linear-tech.com

Related keywords: AUTOMOTIVE | STEP DOWN | DC DC CONVERTER | SWITCHING REGULATOR

Story Tools

Go Back |

E-Mail | Print | Post

Click here for copyright permissions!
Copyright 2008 Thomas Publishing Company

	Contact company
	View Company Profile at ThomasNet.com
	Company web site
	More news from this company
	Search the industrial web for: "AUTOMOTIVE, STEP DOWN, DC DC CONVERTER, SWITCHING REGULATOR"
	Search for suppliers of: DC To DC Converters Switching Regulators
	Join the forum discussion at: Tools of the Trade Wired In

Related Stories:
Jul 1, 2008	DC/DC Converters offer 1 kVdc isolation and 88% efficiency.
Jun 30, 2008	DC/DC Converter delivers isolated 2 W single output power.
Jun 25, 2008	DC/DC Converter has dual digital control for LED lighting.
Jun 24, 2008	Power Manager IC has 7 outputs.
Jun 24, 2008	Eighth Brick DC/DC Converter delivers quarter brick power.
Jun 23, 2008	DC/DC Regulator operates from 3-36 V input supply.
Jun 23, 2008	DC/DC Converters have output voltage tracking function.
Jun 19, 2008	PFM DC/DC Converter promotes LED lighting efficiency.
Jun 18, 2008	DC-DC Converters have 10-36 V wide input range.
Jun 13, 2008	Step-Down DC-DC Converter suits portable applications.
Jun 11, 2008	DC/DC Converter features output current cut-off function.
Jun 2, 2008	DC/DC Converters feature switching frequency of 400 kHz.
May 27, 2008	Switching Regulator provides up to 10 A from 3-75 V input.
May 16, 2008	DC/DC Converters are available with 1-3 W output power.
May 14, 2008	Step-Down DC/DC Converter includes LDO controller.
May 9, 2008	Buck Regulator features integrated dual power monitor.
May 8, 2008	Buck DC/DC Regulator integrates dual power monitor.
May 7, 2008	Regulator and Current Multipler form DC-DC converter system.
May 2, 2008	DC-DC Converters feature 93% efficiency.
Apr 29, 2008	Switching Regulators have supply voltage rating up to 50 V.

More New Product News from this company:
Jun 23, 2008	DC/DC Regulator operates from 3-36 V input supply.
Jun 23, 2008	Single-Channel Voltage Monitors draw 500 nA quiescent current.
Jun 23, 2008	Triple-Output Converter has peak efficiency of 94%.
Jun 23, 2008	Battery Back-Up System Manager offers multimodal operation.
Jun 5, 2008	Voltage Regulator comes in compact surface mount package.
Jun 2, 2008	Logarithmic RF Power Detector has 40 MHz to 3.8 GHz range.
Jun 2, 2008	USB Battery Charger targets handheld applications.
Jun 2, 2008	DC/DC Converters offer output disconnect and soft start.
May 22, 2008	Dual ADC Drivers offer guaranteed gain matching.
May 19, 2008	ADCs feature 0.5 µA shutdown current in 3 x 2 mm DFN package.
May 14, 2008	White LED Driver powers up to 10 LEDs.
Apr 25, 2008	Analog-to Digital Converter conserves FPGA I/O pins.
Apr 8, 2008	Boost/Buck Regulators are contained in 3 x 3 mm QFN package.
Apr 8, 2008	Synchronous N-Channel MOSFET Driver delivers up to 5 A.
Apr 8, 2008	Adjustable TFT BIAS Power Supply incorporates LED driver.
Apr 8, 2008	DC/DC Step-Down Regulator operates from -55 to +125°C.
Apr 8, 2008	Synchronous Step-Down Regulator comes in military plastic.
Mar 25, 2008	IC comes in 2 x 3 mm DFN package.
Mar 25, 2008	Buck Regulators have 300 kHz to 3 MHz switching frequency.
Mar 25, 2008	Switch-mode USB Power Manager maximizes battery run time.

Other News from this company:
Apr 05, 2006	Linear Technology Launches First European Design Center in Munich
Apr 03, 2006	Linear Technology and Primarion Announce Digital Power Alliance

Brought to you by Thomasnet.com Browse ThomasNet Directory

News provided by ThomasNet Industrial Newsroom^® (TIN). TIN is a comprehensive source of new and timely product information in the industrial marketplace. TIN supplies new product information to the web sites, e-marketplaces and print publications that serve the industrial marketplace. For press release submissions please go to http://www.productnews.com/SubmitPRPage.html. BY ACCESSING, BROWSING AND/OR USING THIS WEB SITE AND/OR ANY WEB SITES PROVIDED BY ProductNews.com, YOU AGREE TO BE BOUND BY THE TERMS OF USE AGREEMENT.