Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC2299
Edited by the Electronicstalk Editorial
Team on 02 October 2007
Tiny driver boosts up to eight HBLEDs
High-efficiency boost DC/DC convertor features an integrated 3.5A guaranteed switch current and delivers a net output power of 7-12W for driving high-brightness LEDs.
Micrel reckons the MIC2299 is the industry's smallest and most powerful LED driver for portable applications This high-efficiency boost DC/DC convertor features an integrated 3.5A guaranteed switch current and delivers a net output power of 7-12W from 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, digital cameras, and emergency lighting, the MIC2299 is currently available in volume quantities with pricing starting at US $1.70 for 1000-unit quantities.
"With a guaranteed 3.5A switch current and a solution footprint of just 0.25in2, Micrel's MIC2299 sets a new standard for driving high brightness LEDs in portable applications without sacrificing valuable battery life", says Ralf Muenster, Micrel's Marketing Director for Power Products.
"In addition, the solution enables up to 30V on the output thereby enabling arrays of up to eight high brightness LEDs in a series".
The powerful, high current integrated switch in the MIC2299 allows the device to deliver at least 1A into two WLEDs or 750mA into three WLEDs connected in series.
This enables a powerful torch for illumination in dark environments or a brilliant flash for improved picture quality in low light situations.
LED brightness can be dynamically controlled by applying a voltage or PWM signal to the brightness pin.
The IC operates at a fixed 2MHz switching frequency with an efficiency reaching up to 90%.
The MIC2299 solution requires only a tiny, low profile inductor and small ceramic capacitors, making the footprint very compact while minimising solution cost.
Finally, consistent with the current operating array of a range of battery configurations, the solution operates from an input voltage range of 2.5-10V.
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