Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MIC28510

75V/4A DC-DC Buck Regulator w/Hyper Speed Control™

Status: In Production

Features:

  • Hyper Speed Control™ architecture enables
  • High delta V operation (VIN = 75V and VOUT = 0.8V)
  • Small output capacitance
  • 4.5V to 75V voltage input
  • 4A output current capability, up to 95% efficiency
  • Adjustable output voltage form 0.8V to 24V
  • ≤1% FB accuracy
  • Any Capacitor™ stable
  • Zero-ESR to high ESR output capacitors
  • 100kHz to 500kHz switching frequency
  • Internal compensation
  • Foldback current limit and "hiccup" mode short-circuit protection
  • Thermal shutdown
  • Supports safe startup into a pre-biased load
  • -40°C to +125°C junction temperature range
View More
Overview
Documents
Development Environment
RoHS Information
Add To Cart

Device Overview

Summary

The MIC28510 is an adjustable frequency, synchronous buck regulator featuring unique adaptive on-time control architecture. The MIC28510 operates over an input supply range of 4.5V to 75V and provides a regulated output of up to 4A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%.

Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN) / (Low VOUT) operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.

The MIC28510 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, "hiccup" mode short circuit protection, and thermal shutdown.

Additional Features
    • Hyper Speed Control™ architecture enables
    • High delta V operation (VIN = 75V and VOUT = 0.8V)
    • Small output capacitance
    • 4.5V to 75V voltage input
    • 4A output current capability, up to 95% efficiency
    • Adjustable output voltage form 0.8V to 24V
    • ≤1% FB accuracy
    • Any Capacitor™ stable
    • Zero-ESR to high ESR output capacitors
    • 100kHz to 500kHz switching frequency
    • Internal compensation
    • Foldback current limit and "hiccup" mode short-circuit protection
    • Thermal shutdown
    • Supports safe startup into a pre-biased load
    • -40°C to +125°C junction temperature range

    Parametrics
    Name
    Value
    Regulator Type
    Step Down (Buck)
    # of Outputs
    1
    Input Voltage Range Min (V)
    4.5
    Input Voltage Range Max (V)
    75
    Output Voltage Range Min (V)
    0.8
    Output Voltage Range Max (V)
    5.5
    Output Current (mA) max
    4000
    Quiescent Current (mA) typ
    1.4
    Synchronous Rectifier
    Yes
    Operating Temp Range
    -40 to 125
    Vfb (V)
    0.8
    Duty Cycle Max (%)
    0.8
    SHUTDOWN Current (µA) (Typ)
    700

    Documents

    Jump to:

    Software Library

    Development Environment

    • Software Libraries
    Software Libraries
    Analog Simulation - MIC28510

    The Micrel MIC28510 is an adjustable frequency, synchronous buck regulator featuring unique adaptive on-time control architecture. The MIC28510 operates over an input supply range of 4.5V to 75V and...

    Learn More

    RoHS Information

    Part Number
    Device Weight (g)
    Shipping Weight (grams)
    Lead Count
    Package Type
    Package Width
    Solder Composition
    JEDEC Indicator
    RoHS
    China EFUP
    MIC28510YJL-TR
    0.081600
    0.227180
    28
    VQFN
    5x6x0.9mm
    NiPdAu
    e4
    MIC28510HYJL-TR
    0.081600
    0.227180
    28
    VQFN
    5x6x0.9mm
    NiPdAu
    e4
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

    Buy from Microchip

    Grid
    View
    Table
    View
    Filter:
    Apply
    Clear
    Only show products with samples
    Product
    Leads
    Package Type
    Temp Range
    Packing Media
    5K Pricing
    Buy