Product category: Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC2810
Edited by the Electronicstalk Editorial Team on 09 February 2007
Three-output power IC drives wireless
applications
Highly efficient flexible power management IC provides three output voltages and a power-on reset in a tiny 3 x 3mm MLF-16 package.
Micrel has launched the MIC2810, a highly efficient, flexible power management IC that provides three output voltages and a power-on reset in a tiny 3 x 3mm MLF-16 package The solution is ideal for use in cellphones, smart phones, PDAs, cameras, portable media players, wireless LAN cards and Bluetooth applications
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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The MIC2810 is currently available in volume and pricing starts at US $2.25 for 1000-unit quantities.
"The MIC2810 offers the maximum flexibility to power DSPs, CPLDs and graphics chipsets which often require up to three voltages", noted Ralf Muenster, Micrel's Director of Marketing for Power Products.
"Usually, the lower core voltage has the higher current requirement and an efficient buck regulator is the ideal power solution, while the I/O and memory rails can be powered using LDOs".
"The MIC2810 provides these three voltages in a highly flexible, space and energy efficient solution, 25% smaller than current solutions on the market".
The MIC2810 features a wide input range of 2.7 to 5.5V, three voltage outputs and a power-on reset.
Output 1 is a high frequency, high efficiency DC/DC switching regulator for up to 600mA, and outputs 2 and 3 are low-dropout linear regulators.
One of the linear regulators can be directly connected to the output of a DC/DC convertor or to directly to the main power rail.
The MIC2810 is a uCap design, operating with very small ceramic output capacitors for stability and reducing solution footprint and cost.
The DC/DC convertor provides virtually no noise in light load mode and just 75uV RMS output noise in LowQ 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% efficiency, and only requires a tiny 2.2uF output capacitor and a 2.2uH inductor for stability.
The part also integrates a power-on reset (POR) circuit that monitors all three output voltages.
Independent enables for the switching and two linear regulators allow for design flexibility.
Consisting of one switching DC/DC and two LDOs, Micrel's MIC2810 solution footprint is 25% smaller than the smallest discrete solution currently on the market.
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