Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC2142
Edited by the Electronicstalk Editorial
Team on 12 March 2001
Convertor can drive white LEDs and bias
LCDs
The world's simplest micropower boost convertor capable of driving white LEDs and providing LCD bias is now available from Micrel Semiconductor for use in cellular phone and PDA applications.
The world's simplest micropower boost convertor capable of driving white LEDs and providing LCD bias is now available from Micrel Semiconductor for use in cellular phone and PDA applications Housed in an IttyBitty SOT23-5 packaging, and requiring only three external components, the MIC2142 is ideal for portable, space-sensitive applications like cellular phones and PDAs
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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World's simplest buck regulator boosted to 2A
Micrel has boosted the output capability of the industry's simplest surface-mount DC/DC switching convertor to 2A while retaining the device's original SO-8 packaging.
Its 2.2-16V input voltage range allows it to be powered from single-cell LiIon or three-cell alkaline/NiMH/NiCad batteries.
The MIC2142 is highly efficient over a range of load currents and applications.
The device features a low quiescent current of only 85uA, allowing high efficiencies in low-power LCD bias applications.
With its low on-resistance integrated 200mA switch, the MIC2142 can easily drive up to four white LEDs.
"The MIC2142's high efficiency, small physical size, and ease of use helps designers maximize battery life while saving valuable board area", says Tony Grizelj, Micrel's marketing manager for power products.
The output voltage of the MIC2142 can be adjusted up to 22V.
Fixed output voltage options of 5, 12 and 15V will soon be available.
In addition to boost topology, the MIC2142 can also be configured for use in SEPIC and flyback applications.
The MIC2142BM5 is available in a SOT23-5 package is priced at $1.50 when purchased in 1000-piece quantities.
Samples are available from stock.
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