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Datasheet Microchip MCP1601


The MCP1601 is a synchronous Buck (step-down) switching regulator that can continuously supply 500mA of load current


  • Download » Datasheet PDF, 502 Kb, Revision: 02-05-2013
    MCP1601 Datasheet
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    500 mA Synchronous BUCK Regulator
    Features Description The MCP1601 is a fully integrated synchronous BUCK
    (step down) DC/DC converter for battery powered systems. With an input operating range of 2.7V to 5.5V, the
    MCP1601 is ideal for applications being powered by
    one single cell Li-Ion, 2 to 3 cell NiMH, NiCd or alkaline
    sources. Output voltages can range from 0.9V to VIN to
    accommodate a wide range of applications. Efficiency
    can exceed 92% while operating at 750 kHz with load
    current capability up to 500 mA. The MCP1601 is used
    to minimize space, cost and wasted energy. Input Range of 2.7V to 5.5V
    3 Operating Modes: PWM, PFM and LDO
    Integrated BUCK and Synchronous Switches
    Ceramic or Electrolytic Input/Output Filtering
    750 kHz Fixed Switching Frequency
    Oscillator Synchronization to 1 MHz PWM Mode
    Auto-Switching from PWM/PFM Operation
    100% Duty Cycle Capable for Low Input Voltage
    500 mA Continuous Output Current Capability
    Integrated Under-Voltage Lock-Out Protection
    Integrated Over-Temperature Protection
    Integrated Soft Start Circuitry ...
  • Download » Datasheet PDF, 90 Kb, Revision: 03-19-2003
    MCP1601, 500 mA Synchronous Buck Regulator
    Docket ↓
    MCP1601, 500 mA Synchronous Buck Regulator
    The MCP1601, 500 mA synchronous buck regulator,
    is a fully integrated DC-to-DC switching converter that
    requires neither an external power transistor nor a
    power diode for operation within its rated current range.
    It is designed for down-converting standard battery and
    bus voltages to the operational voltages required in
    various systems. It has an adjustable output range of
    0.9V to VIN and can be powered with an input voltage
    range of 2.7V to 5.5V. Given this input range, the
    MCP1601 is ideal for applications being powered with
    a single cell Li-Ion, or two or three cell NiMH, NiCd or
    alkaline batteries, as well as, from standard system
    bus voltages such as 5.0V, 3.3V or 3.0V. Some typical
    battery powered applications include: Cell Phones,
    PDAs, Digital Cameras, and USB powered devices.
    At the internally set PWM (Pulse Width Modulation)
    frequency of 750 kHZ, the MCP1601 can exceed 92%
    efficiency and deliver 500 mA of load current, while
    using low profile surface mount inductors and ceramic
    capacitors. Together these features minimize space,
    cost and wasted power.
    The MCP1601 has three operating modes; PWM for ...



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




# of Outputs11
Automotive RatedNoNo
Duty Cycle Max, %11
Input Voltage Range, V2.7 - 5.52.7 - 5.5
Light Load Efficiency ModeYesYes
Operating Temperature Range, °C-40 to +85-40 to +85
Output Current, mA) Max500500
Output Voltage Range, V0.90.9
Quiescent Current, mA) type0.1190.119
Regulator TypeStep Down (Buck)Step Down (Buck)
SHUTDOWN Current, µA0.050.05
Switching Frequency, kHz750750
Synchronous RectifierYesYes
Vfb, V0.80.8

Eco Plan


Moldel Line

Series: MCP1601 (2)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 6V

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