Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC2298
Edited by the Electronicstalk Editorial
Team on 11 May 2007
Compact driver provides powerful LED
flashes
The MIC2298 is billed as the industry's tiniest and most powerful LED driver for portable applications.
Micrel describes its latest offering, the MIC2298, as the industry's tiniest and most powerful LED driver for portable applications The device is a 7W, high-efficiency boost DC/DC convertor housed in a tiny 3 x 3mm MLF package
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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Targeting photoflash and torchlight applications in mobile phones, PDAs, and digital cameras, the MIC2298 is available in volume with pricing starting at US $1.65 for 1000-unit quantities.
"Mobile phones and PDAs have dramatically increased the camera resolution they offer consumers", noted Ralf Muenster, Micrel's Marketing Director for Power Products.
"However, even these high resolution cameras continue to perform poorly in low light situations".
"Micrel's new MIC2298 LED driver gives designers the ability to enhance their integrated cameras with a powerful high brightness LED flash that consumes only minimal board space and battery life".
The MIC2298 offers a guaranteed switch current of 3.5A allowing the device to deliver 1A into two high brightness WLEDs connected in series.
This enables a powerful flash that improves picture quality, particularly in 2Mpixel and higher cameras.
The LED brightness can be dynamically controlled by applying a voltage or PWM signal to the brightness pin.
The IC operates at a fixed 1MHz switching frequency with greater than 86% efficiency.
The high efficiency enables longer battery life and, when combined with its extremely small footprint, makes Micrel's MIC2298 the best solution for driving high brightness LEDs in advanced mobile phone and PDA applications.
The MIC2298 solution requires only a tiny 2.2uH inductor and small ceramic capacitors making the footprint very compact while minimising solution cost.
Additionally, the solution operates from an input voltage range of 2.5-10V, consistent with the operating range of single- and dual-cell Li-ion batteries.
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