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Datasheet Microchip MIC28514


The MIC28514/15 is a wide input range (4


  • Download » Datasheet, PDF, 957 Kb, Revision: 05-19-2017
    MIC28514 75V/5A Hyper Speed Control Synchronous DC/DC Buck Regulator with Exter
    Docket ↓
    75V/5A Hyper Speed Control®
    Synchronous DC/DC Buck Regulator with External Soft Start
    Features Applications Hyper Speed Control® Architecture Enables:
    -High Input to Output Voltage Conversion
    Ratio Capability (VIN = 75V and VOUT = 0.6V)
    -Small Output Capacitance 4.5V to 75V Input Voltage 5A Output Current Capability with up to 95% Efficiency Adjustable Output Voltage from 0.6V to 32V ±1% FB Accuracy Any Capacitor™ Stable:
    -Zero-ESR to High-ESR Output Capacitors 270 kHz to 800 kHz Adjustable Switching Frequency Internal Compensation Built-in 5V Regulator for Single-Supply Operation Auxiliary Bootstrap LDO for Improving System
    Efficiency Internal Bootstrap Diode Adjustable Soft Start Time Programmable Current Limit “Hiccup” Mode Short-Circuit Protection Thermal Shutdown Supports Safe Start-up into a Prebiased Output -40°C to +125°C Junction Temperature Range Available in 32-Pin, 6 mm x 6 mm VQFN Package Distributed Power Systems
    Communications/Networking Infrastructure
    Industrial Power Supplies
    Solar Energy General Description
    The MIC28514 is an adjustable frequency,
    synchronous buck regulator that features a unique
    adaptive on-time control architecture. The MIC28514
    operates over an input supply range of 4.5V to 75V, and
    provides a regulated output of up to 5A of output
    current. The output voltage is adjustable down to 0.6V
    with an accuracy of ±1%.
    Hyper Speed Control architecture allows for an ultra-fast
    transient response, while reducing the output capacitance, and also makes high-VIN/low-VOUT operation
    possible. This adaptive on-time control architecture
    combines the advantages of fixed frequency operation ...



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




# of Outputs1
Automotive QualifiedNo
Automotive Ratedno
Duty Cycle Max, %85
Input Voltage Range, V4.5 - 75
Light Load Efficiency ModeNo
Operating Temperature Range, °C-40 to +125
Output Current, mA) Max5000
Output Voltage Range, V0.6 - 32
Quiescent Current, mA) type1
Regulator TypeStep Down (Buck)
SHUTDOWN Current, µA1
Switch current, A) type5
Switching Frequency, kHz270 to 800
Synchronous RectifierYes
Vfb, V0.6

Eco Plan


Moldel Line

Series: MIC28514 (1)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 75V

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