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MIC26901

28V/9A DC-DC Buck Regulator w/Hyper Speed Control™

Status: In Production

Features:

  • Hyper Speed Control™ architecture enables
  • High delta V operation (VIN = 28V and VOUT = 0.8V)
  • Small output capacitance
  • 4.5V to 28V voltage input
  • 9A output current capability, up to 95% efficiency
  • Adjustable output from 0.8V to 5.5V
  • ±1% feedback accuracy
  • Any Capacitor™ stable -zero-to-high ESR
  • 600kHz switching frequency
  • No external compensation
  • Power Good (PG) output
  • Foldback current-limit and "hiccup mode" short-circuit protection
  • Supports safe startup into a pre-biased load
  • -40°C to +125°C junction temperature range
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC26901 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC26901 operates over an input supply range of 4.5V to 28V and provides a regulated output of up to 9A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz. 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 MIC26901 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under voltage 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. An open-drain Power Good (PG) pin is provided.

Additional Features
    • Hyper Speed Control™ architecture enables
      • High delta V operation (VIN = 28V and VOUT = 0.8V)
      • Small output capacitance
    • 4.5V to 28V voltage input
    • 9A output current capability, up to 95% efficiency
    • Adjustable output from 0.8V to 5.5V
    • ±1% feedback accuracy
    • Any Capacitor™ stable -zero-to-high ESR
    • 600kHz switching frequency
    • No external compensation
    • Power Good (PG) output
    • Foldback current-limit and "hiccup mode" short-circuit protection
    • 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)
    28
    Output Voltage Range Min (V)
    0.8
    Output Voltage Range Max (V)
    5.5
    Output Current (mA) max
    9000
    Quiescent Current (mA) typ
    0.45
    Switching Frequency (kHz)
    600
    Synchronous Rectifier
    Yes
    Operating Temp Range
    -40 to 125
    Vfb (V)
    0.8
    Duty Cycle Max (%)
    0.82
    SHUTDOWN Current (µA) (Typ)
    5

    Documents

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    Development Environment

    • Software Libraries
    Software Libraries
    Analog Simulation - MIC26901

    The Micrel MIC26901 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC26901 operates over an input supply range of 4.5V to 28V and...

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    RoHS Information

    Part Number
    Device Weight (g)
    Shipping Weight (Kg)
    Lead Count
    Package Type
    Package Width
    Solder Composition
    JEDEC Indicator
    RoHS
    China EFUP
    MIC26901YJL-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.

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