Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC4684
Edited by the Electronicstalk Editorial
Team on 04 October 2001
Greater efficiency from simple switcher
Micrel has boosted the efficiency of its simple SO8 buck regulator.
Micrel has boosted the efficiency of its simple SO8 buck regulator The MIC4684, the newest member of the SuperSwitcher family, is a high efficiency, 200kHz, PWM buck regulator
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.
Micrel has increased the efficiency by up to 10% by adding a boost capacitor to the MIC4684.
The boost capacitor increases the available voltage to saturate the internal power switch.
Efficiencies of over 85% are obtainable in a wide range of applications.
The MIC4684 boasts a wide input voltage range of 4 to 34V, and a high 1.5A output current.
Only five external components are required with the MIC4684, making it a very simple-to-use solution.
"The MIC4684 is ideal for applications where space and efficiency are critical.
Its high efficiency operation in conjunction with its fused power SO8 leadframe allows over 1.5A of continuous output current.
The MIC4684 can replace bulky D2PAK and TO-220 packages in many applications", says Tony Grizelj, Micrel's marketing manager for power products.
The MIC4684 allows robust designs with built-in safety features such as a cycle-by-cycle current limit, frequency foldback short circuit protection, and thermal shutdown.
The MIC4684 is available in an adjustable output voltage version, with fixed 3.3 and 5.0V output versions coming soon.
The MIC4684BM is housed in an SO8 package and priced at $2.30 when purchased in 1000-piece quantities.
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