MIC2800

MIC2800 Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs General Description The MIC2800 is a high performance power management IC, giving three output voltages with maximum efficiency. Integrating a 2MHz DC/DC converter with an LDO post regulator, the MIC2800 gives two high efficiency outputs with a second, 300mA LDO for maximum flexibility. The MIC2800 features a LOWQ® mode, reducing the total current draw while in this mode to less than 30µA. In LOWQ® mode, the output noise of the DC to DC converter is 75µVRMS, significantly lower than other converters which use a PFM light load mode that can interfere with sensitive RF circuitry. The DC to DC converter uses small values of L and C to reduce board space but still retains efficiencies over 90% at load currents up to 600mA. The MIC2800 is a µCap design, operating with very small ceramic output capacitors and inductors for stability, reducing required board space and component cost and it is available in fixed output voltages in the 16-pin 3mm x 3mm MLF® leadless package. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features 2.7V to 5.5V input voltage range 2MHz DC/DC converter and two stand-alone LDOs – LDO1: Low input voltage is powered directly from DC/DC converter for highest efficiency Integrated power-on reset (OR function for all outputs) – Adjustable delay time LOWQ® mode – 30µA Total IQ when in LOWQ® mode Tiny 16-pin 3mm x 3mm MLF...