Micrel Rolls Out New Family of Pre-Bias Safe, High Power Density Integrated Synchronous Buck Regulators

SAN JOSE, CA, Aug 29 (MARKET WIRE) --
Micrel, Inc. (NASDAQ: MCRL), an industry leader in analog, high bandwidth
communications and Ethernet IC solutions, today launched a new family of
pre-bias safe, fully integrated buck regulators targeting the 5V and 3.3V
rails. The MIC22705 can supply a maximum output load current of 7A, while
the MIC22405 and MIC22205 can handle up to 4A and 2A respectively. These
buck regulators achieve more than 95 percent efficiency while switching
at high frequencies, utilizing very small external components.
Applications such as servers, routers, 4G/LTE base stations, Blu-ray
players, computer peripherals and FPGA/ASIC voltage supply can take
advantage of this family of buck regulators. The MIC22705, MIC22405 and
MIC22205 are available in volume quantities with pricing starting at
$2.20, $1.53 and $0.83 respectively, for 1K units. Samples can be ordered
on line at: http://www.micrel.com/ProductList.do.

"High power density in small footprints combined with 95 percent
efficiency offer terrific benefits in advanced applications," noted Doyle
Slack, director of analog marketing, Micrel. "The MIC22x05 family saves
significant BOM costs while setting a new standard for performance."

The MIC22x05 family of buck regulators operates over an input voltage
range of 2.9V to 5.5V, and is optimized for highest efficiency at high
switching frequencies -- achieving more than 95 percent efficiency. The
operating frequency of MIC22705 is fixed at 1MHz, while the MIC22205 and
MIC22405 can be programmed from 300kHz up to 4MHz. The ultra-high speed
control loop keeps the output voltage within regulation even under the
extreme transient load conditions commonly found in FPGAs and low-voltage
ASICs. The output voltage is pre-bias safe and can be adjusted down to
0.7V, to address all low-voltage power needs. The MIC22x05 family offers
a full range of sequencing and tracking options. The Enable/Delay
(EN/DLY) pin, combined with the Power Good (PG) pin, allows multiple
outputs to be sequenced in any way during turn-on and turn-off. The
MIC22705 is available in a 24-pin 4mm x 4mm MLF(R) package while the
MIC22405 and MIC22205 come in 20-pin 3mm x 4mm MLF and 12-pin 3mm x 3mm
MLF(R) packages respectively.

About Micrel, Inc.
Micrel, Inc. is a leading global manufacturer of IC
solutions for the worldwide analog, Ethernet and high bandwidth markets.
The Company's products include advanced mixed-signal, analog and power
semiconductors; high performance communication, clock management,
Ethernet switch and physical layer transceiver ICs. Company customers
include leading manufacturers of enterprise, consumer, industrial,
mobile, telecommunications, automotive, and computer products.
Corporation headquarters and state-of-the-art wafer fabrication
facilities are located in San Jose, CA, with regional sales and support
offices and advanced technology design centers situated throughout the
Americas, Europe and Asia. In addition, the Company maintains an
extensive network of distributors and reps worldwide. Web:
http://www.micrel.com.

Note: MLF is a registered trademark of Amkor Technology.

Contact:
Julieanne DiBene
Marketing Communications
1-408-474-1276
Julie.DiBene@Micrel.com

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