Power Management IC provides 3 output voltages.
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Press Release Summary:
Housed in 3 x 3 mm MLF(R)-16 package, Model MIC2800 features input range of 2.7-5.5 V, 3 output voltages, and power-on reset. Output 1 is dc-to-dc switching regulator for up to 600 mA, while outputs 2 and 3 are low dropout linear regulators. LOWQ(TM) mode reduces total current drawn to less than 50 µA. Operating at 2 MHz PWM in normal mode with more than 93% efficiency, chip is suited for smart phones, PDAs, cameras, WLAN cards, and Bluetooth applications.
Original Press Release:
Micrel Rolls Out New High Performance Power Management IC
MIC2800 Combines Highly Efficient DC-to-DC Converter With Two LDO Outputs for Peripheral Rails in Portable Applications
SAN JOSE, Calif., May 1 / -- Micrel Inc., (NASDAQ:MCRL), an industry leader in analog, high bandwidth communications and Ethernet IC solutions, today launched the MIC2800, a highly efficient, flexible power management IC that provides three output voltages and a power on reset in a tiny 3mm x 3mm MLF(R)-16 package. The solution is ideal for use in cell phones, Smart phones, PDAs, cameras, portable media players, wireless LAN cards and Bluetooth applications. The MIC2800 is currently available in volume and pricing starts at $2.25 for 1K quantity.
The MIC2800 features a wide input range of 2.7V to 5.5V, three voltage outputs and a power-on reset. Output 1 is a high frequency, high efficiency DC-to DC switching regulator for up to 600mA while output 2 and 3 are low dropout linear regulators. One of the linear regulators works from a low input voltage, allowing it to post-regulate the switching regulator for best efficiency. For example, the high speed DC-to-DC converter can step down the Li-Ion battery input to 1.8V and the LDO can provide 1.6V by post-regulating the 1.8V rail with greater than 80 percent efficiency. One additional low noise linear output can provide a third voltage such as 2.8V for an analog rail. The IC also offers a LOWQ(TM) mode which reduces the total current drawn to less than 50uA.
"As cell phone manufacturers add more features such as video streaming and higher resolution cameras to cell phones, several new chipsets have to be powered to enable these applications," noted Ralf Muenster, Micrel's director of marketing for power products. "The MIC2800 is a no compromise design, meeting the requirements of camera accelerator DSPs or digital multimedia broadcast (DMB) chips used in today's portable applications with the smallest footprints. In addition to these and other auxiliary functions, the part is also suitable to powering a baseband processor core and I/O rails as well as providing a higher low noise analog voltage using the third output."
The MIC2800 is a micronCap design, operating with very small ceramic output capacitors for stability and reducing solution footprint and cost. The DC-to-DC converter provides virtually no noise in light load mode and just 75uVRMS output noise in LOWQ(TM) mode. This allows designers to avoid higher noisy light-load modes that have traditionally interfered with sensitive RF circuitry. The solution operates at 2MHz PWM in normal mode, more than 93 percent efficiency and requires a tiny 2.2uF output capacitor and a 2.2uH inductor for stability. The part also integrates a POR circuit that monitors all three output voltages. Independent enables for the switching and two linear regulators allow for design flexibility. Compared to the smallest discrete solution currently on the market and consisting of one switching DC-to-DC and two LDOs, Micrel's MIC2800 solution footprint is 25 percent smaller.
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. LOWQ is a trademark of Micrel, Inc.
CONTACT: Julieanne DiBene, Marketing Communications of Micrel, Inc., +1-408-474-1276, or Julie.DiBene@Micrel.com
