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Micrel Launches High Power Monolithic Boost LED Driver With 3.5A Integrated FET

Micrel, Inc., an industry leader in analog, high bandwidth communications and Ethernet IC solutions, rolled out the MIC3223, a high power Boost regulator for driving high power LEDs.

MIC3223 is a monolithic switching regulator with integrated 3.5A, 37V power switch and can be used for driving high brightness 1-W or 3-W LEDs. The MIC3223 is currently available in volume quantities, with pricing starting at $1.46 for 1K quantities. Samples can be ordered at: http://www.micrel.com/ProductList.do

“Micrel's MIC3223 provides the performance, flexibility and ease-of-use required by LED lighting system designers to meet backlighting challenges,” noted Doyle Slack, senior marketing director of analog power, linear and RF at Micrel. “In addition to the low feedback reference voltage and an integrated high current power MOSFET, the MIC3223 provides the ability to drive an external N-channel switch to control the brightness of the series connected high power LEDs.”

The MIC3223 is capable of driving up to ten LEDs in series with +/- 5 percent current accuracy from an input voltage range of 4.5V to 20V. With its peak current mode control boost architecture and integrated power switch delivering greater than 90 percent efficiency, the solution is well positioned to provide constant current with changes in input voltage and output load. The device implements a fixed 1.0 MHz PWM control scheme to allow flexibility in the design. The LED current can be programmed to a wide range of values through the use of an external resistor.

The MIC3223 features a PWM dimming input and an output driver to drive an external N-channel FET for PWM dimming at frequencies up to 20 kHz. It also offers an enable pin for very low power shutdown and an UVLO. The device has a wide range of protection features including output over voltage protection and an over temperature protection. In addition to enhanced power driving capability/reliability, the MIC3223 comes in an exposed pad TSSOP-16L package and operates over a junction temperature range of -40degC to 125degC.


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Samsung Launches M5650 With music-focused handset

2009. 12. 30. 15:13 Posted by 비회원

 

SEOUL, Korea (Dtalker David) – Samsung Electronics Co. Ltd, a leading mobile phone provider, today unveiled the Samsung M5650, a music-focused addition to its popular lineup of full touch screen handsets for young mobile users.

 

Following on the launch of the Corby(S3650), the Samsung M5650 further strengthens Samsung’s offering for digitally savvy young users who seek colorful and bold designs, easy connectivity and great functionality.

 

Tailored for music lovers, the Samsung M5650 is equipped with a one-touch key for listening to your favorite tunes on top of all the diverse features of the Corby, which swept the global market with sales of 3.5 million units within two months of its launch in September.

 

The Samsung M5650’s bold design emphasizes the same contoured exterior as seen in the Corby, adding curved edges on its reverse side to maximizing its smooth and sophisticated feel.

 

In addition, the Samsung M5650 offers enhanced social networking features for those who are actively digitally connected through means such as e-mail, instant messaging and blogs. Additionally, the Samsung M5650 allows quick access to MySpace, Facebook and Twitter, and the ability to easily upload photos and videos.

 

Offering 3G connectivity, the Samsung M5650 comes with a full range of features such as WiFi, a 3-megapixel camera, FM radio, MP3 player, USB 2.0, Bluetooth, One Finger Zoom and a Cartoon UI.

 

We are always looking for ways to satisfy the next generation of mobile phone users,” said Younghee Lee, Vice President of Marketing for the Mobile Communications Division of Samsung Electronics. “The Samsung M5650 builds on the appeal of our popular Corby with exciting new music functions and speedy 3G connectivity, expanding our product lineup of hip and trendy mobile phones for young consumers.”

 

Samsung M5650 is currently available in Portugal and soon expand to other Europe markets, Southeast Asia, the Middle East, Africa, India and China. The battery cover is available in blue or black.


 

(David : dtalker@daum.net)



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T-Mobile launches BlackBerry Curve 8320 Sunset

2008. 8. 5. 18:10 Posted by 비회원
[English News BlogTimes 오세경(리포터)] T-Mobile launches BlackBerry Curve 8320 Sunset

사용자 삽입 이미지

BlackBerry's Curve gets a "sunset" rust-color treatment, in the 8320 version available from T-Mobile from today. It’s always nice to see some more color choices on T-Mobile, though. We were getting pretty darn tired of the gold and titanium Curves. 2-megapixel cam Supporting, Wi-Fi and quad-band phone.
It will be available at select T-Mobile retail stores and online at www.t-mobile.com for $149.99 with a two-year service agreement.
사용자 삽입 이미지

Here’s the full spec rundown in case any of you were MIA for the past year:
  • GSM, GPRS, EDGE, Wi-Fi
  • Quad-band world phone 850/900/1800/1900 MHz
  • 2.5” display, 320×240 pixels, QVGA display with more than 65,000 colors
  • 3.5 mm headset jack
  • Dimensions: 4.2 x 2.4 x 0.6 inches; 3.9 ounces
  • microSD slot supporting up to 4 GB of optional removable memory
  • 2 megapixel camera
  • T-Mobile myFaves-enabled
  • Stereo Bluetooth® capability

Larger pics after the jump as well as the press release! [BGR]


http://media.blogtimes.org/3
(Reporter : 오세경 iblogtimes@naver.com)

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