Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC2202 and MIC2204
Edited by the Electronicstalk Editorial
Team on 11 February 2004
High-frequency regulators shrink power
design
Two new simple-to-use high-efficiency 2MHz PWM DC/DC step-down regulators are available housed in small 3 x 3mm packages.
Two new simple-to-use high-efficiency 2MHz PWM DC/DC step-down regulators are available housed in small 3 x 3mm packages The MIC2202 and MIC2204 are ideal for powering low-voltage chipsets in space-sensitive applications such as cellular phones, PDAs, hard disk drives, IP phones and 802.11 WLAN plug-in cards
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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The MIC2202 is a 2MHz synchronous buck regulator that steps voltages down from a 2.3 to 5.5V input.
It features internal power mosfets that can supply 600mA of output current with output voltages down to 0.5V.
The fast 2MHz operation along with a proprietary compensation scheme allows the smallest possible external components.
The MIC2202 can operate with an LC product of 2.2 - a 2.2uH inductor and a 1uF ceramic output capacitor, or vice versa.
Most competing solutions require 5 to 50 times greater output component values, adding size and cost to customers' systems.
"The MIC2202 is a small, simple, and efficient DC/DC solution for powering the latest generation chipsets in today's hand-held applications.
The ultralow external component values allow designers to use small, inexpensive ceramic capacitors and low DC resistance chip inductors in their circuits.
The MIC2202 does not sacrifice noise or efficiency for size.
A proprietary gate drive scheme allows over 95% efficiency across a wide 25mA to 200mA load range while maintaining low-noise constant-frequency PWM operation", says Tony Grizelj, Micrel's Marketing Manager for Power Products.
Along with the MIC2202, Micrel has recently released the MIC2204.
The MIC2204 is similar in function to the MIC2202, and operates with a 4.7uF ceramic capacitor and 4.7uH inductor.
The MIC2204 is a lower cost device that is suitable for applications that are not as space-constrained as those that suit the MIC2202.
The MIC2202 and MIC2204 are available in 3 x 3mm MLFTM-10 and MSOP-10 package options.
The MIC2202 is priced at $1.97 and $1.79 in 1000-piece quantities, respectively.
The MIC2204 is priced at $1.88 and $1.70 in 1000-piece quantities, respectively.
Samples are available from stock, and production quantities are stock to 12 weeks ARO.
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