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Datasheet Microchip MIC2571-1YMM

Part NumberMIC2571-1YMM

MIC2571 is a micropower boost switching regulator that operates from one alkaline, nickel-metal-hydride cell, or lithium cell


  • Download » Datasheet PDF, 583 Kb, Revision: 11-05-2015
    MIC2571 - Single-Cell Switching Regulator
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    MIC2571 Micrel MIC2571
    Single-Cell Switching Regulator
    Final Information General Description Features Micrel’s MIC2571 is a micropower boost switching regulator
    that operates from one alkaline, nickel-metal-hydride cell, or
    lithium cell.
    The MIC2571 accepts a positive input voltage between 0.9V
    and 15V. Its typical no-load supply current is 120ВµA. Operates from a single-cell supply
    0.9V to 15V operation 120ВµA typical quiescent current Complete regulator fits 0.3 in2 area 2.85V/3.3V/5V selectable output voltage (MIC2571-1) Adjustable output up to 36V (MIC2571-2) 1A current limited pass element Frequency synchronization input 8-lead MSOP package The MIC2571 is available in selectable fixed output or adjustable output versions. The MIC2571-1 can be configured for
    2.85V, 3.3V, or 5V by connecting one of three separate
    feedback pins to the output. The MIC2571-2 can be configured for an output voltage ranging between its input voltage
    and 36V, using an external resistor network.
    The MIC2571 has a fixed switching frequency of 20kHz. An
    external SYNC connection allows the switching frequency to
    be synchronized to an external signal.
    The MIC2571 requires only four components (diode, inductor, input capacitor and output capacitor) to implement a
    boost regulator. A complete regulator can be constructed in
    a 0.3 in2 area. Applications Pagers
    LCD bias generator
    Battery-powered, hand-held instruments
    Palmtop computers
    Remote controls
    Battery Backup Supplies All versions are available in an 8-lead MSOP with an operating range from –40°C to +85°. Typical Applications D1 ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




Automotive QualNo
Duty Cycle Max67 %
Input Voltage Range Max15 V
Input Voltage Range Min(V)0.9
Light Load Efficiency ModeNo
Operating Temperature Range-40 to +85 °C
Output Voltage Range Max36 V
Output Voltage Range Min2.85 V
Quiescent Current0.120 mA) typ
Switch current1.1 A) typ
Switching Frequency20 kHz
Synchronous RectifierNo
Vfb0.22 V

Eco Plan


Moldel Line

Series: MIC2571 (4)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Up (Boost) - Non-Synchronous Products

Other Names:

MIC25711YMM, MIC2571 1YMM

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