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reference designMIC2800

Microchip MIC2800

2MHz 600mA DC/DC + Dual 300mA LINear Regulators with LowQ® Mode

Overview

TopologyBuck Converter
Input voltage5 V
Output 11.8 V / 0.6 A
IC revisionA

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.

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
  • DC to DC Converter
    • Output current to 600mA in PWM mode
    • LowQ® Mode: no noise light load mode
    • 75µVRMS output noise in LowQ® mode
    • 2 MHz PWM operation in normal mode

    • 90% efficiency

  • LDOs
  • LDO1 input voltage directly connected to DC/DC converter output voltage for maximum efficiency
    • Ideal for 1.8V to 1.5V conversion
    • 300mA output current from 1.8V input
    • Output voltage down to 0.8V
  • LDO2: 300mA output current capable
  • Thermal Shutdown Protection
  • Current Limit Protection

More information

Products

Order Code
Data­sheet
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Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
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IR(A)
Samples
885012206046
WCAP-CSGP MLCCs 16 V(DC), 100 nF, ±10%
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance100 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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60900213421
WR-PHD Jumper, –, –
Simu­lation–
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
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Operating Temperature -40 °C up to +125 °C
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Insulation Resistance1000 MΩ
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Length2.44 mm
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PackagingBag 
Pins1 
ColorBlack 
GenderJumper 
Rated Current3 A