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Micrel Launches New Highly Integrated Intelligent Power Management Solution

Device Combines Dual Regulators With Battery Monitoring for Single AA/AAA Applications

SAN JOSE, CA -- (Marketwired) -- 05/28/14 -- Micrel, Inc. (NASDAQ: MCRL), an industry leader in high performance linear and power solutions, LAN and timing and communications solutions, today introduced the MIC23099 power management solution. The device is targeted at single AA/AAA battery cell applications. Operating from a minimum battery voltage as low as 0.85V, the MIC23099 integrates two switching regulators with an intelligent battery monitoring system that provides the necessary power, monitoring and control for today's most demanding portable applications. This highly integrated, smart power solution offers high switching frequency converters to keep passive components to a minimum count and size, thereby allowing a total footprint of less than 100mm squared. The switching frequency is reduced during light load conditions and is limited to a minimum of 80kHz for the step-down regulator and 100kHz for the step-up regulator. This improves noise immunity in the audio band. In addition, an anti-ringing control switch improves EMI performance at the switch node and high power supply rejection (40dB at 20kHz) for the converters make the MIC23099 ideal for applications such as voice recorders, video game controllers, portable medical devices as well as fuel cell and solar cell applications. The MIC23099 is available in volume quantities with 1,000 quantity pricing starting at $1.75. Samples can be ordered at:

"The MIC23099 provides a high performance, highly integrated power management solution that solves the technical challenges in noise sensitive and space-constrained portable applications," noted Brian Hedayati, vice president of marketing for high performance linear and power solutions at Micrel. "The device reduces overall solution size by over 40 percent and the built-in intelligent power monitoring further reduces system design complexity."

The MIC23099 combines a 1MHz step-up converter capable of delivering 400mW of output power with a step-down converter that provides up to 30mA of output current. Internal sequencing and monitoring control ensures that each regulator starts up in an orderly manner to provide inrush current limiting. Once powered, the regulators and battery are continuously monitored and supervised to ensure proper operation. Other features include an output disconnect switch during shutdown and a low battery monitoring function with LED indicator. The solution also offers power good output, short circuit, and thermal protection. The device is fully specified from -40 to 125-degC and is offered in a tiny 2.5mm x 2.5mm TQFN package.

About Micrel, Inc.
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN and timing and communications markets. The Company's products include advanced mixed-signal, analog and power semiconductors; high performance communication, clock management, MEMs-based clock oscillators and crystal-less clock generators, 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:

Julieanne DiBene
Marketing Communications
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