MAX5082

1.5A, 40V, MAXPower Step-Down DC-DC Converters


Please check latest availability status for a specific part variant.

Description

The MAX5082/MAX5083 are 250kHz PWM step-down DC-DC converters with an on-chip, 0.3Ω high-side switch. The input voltage range is 4.5V to 40V for the MAX5082 and 7.5V to 40V for the MAX5083. The output is adjustable from 1.23V to 32V and can deliver up to 1.5A of load current.

Both devices utilize a voltage-mode control scheme for good noise immunity in the high-voltage switching environment and offer external compensation allowing for maximum flexibility with a wide selection of inductor values and capacitor types. The switching frequency is internally fixed at 250kHz and can be synchronized to an external clock signal through the SYNC input. Light load efficiency is improved by automatically switching to a pulse-skip mode.

All devices include programmable undervoltage lockout and soft-start. Protection features include cycle-by-cycle current limit, hiccup-mode output short-circuit protection, and thermal shutdown. Both devices are available in a space-saving, high-power (2.7W), 16-pin TQFN package and are rated for operation over the -40°C to +125°C temperature range.

MAX5082, MAX5083: Typical Operating Circuit MAX5082, MAX5083: Typical Operating Circuit Enlarge+

Key Features

  • 4.5V to 40V (MAX5082) or 7.5V to 40V (MAX5083) Input Voltage Range
  • 1.5A Output Current
  • VOUT Range From 1.23V to 32V
  • Internal High-Side Switch
  • Fixed 250kHz Internal Oscillator
  • Automatic Switchover to Pulse-Skip Mode at Light Loads
  • External Frequency Synchronization
  • Thermal Shutdown and Short-Circuit Protection
  • Operates Over the -40°C to +125°C Temperature Range
  • Space-Saving (5mm x 5mm) High-Power 16-Pin TQFN Package
  • Applications/Uses

    • Distributed Power
    • FireWire® Power Supplies
    • Industrial
    Part NumberVIN
    (V)
    VIN
    (V)
    VOUT1
    (V)
    VOUT1
    (V)
    Output Adjust. MethodIOUT1
    (A)
    Switch TypeDC-DC OutputsOper. Freq.
    (kHz)
    Package/PinsBudgetary
    Price
    minmaxminmaxSee Notes
    MAX5082 4.5401.2332Resistor1.5Internal1250
    TQFN/16
    $4.87 @1k
    MAX5083 7.5
    TQFN/16
    $4.86 @1k
    See All Step-Down Switching Regulators (402)
    Pricing Notes:
    This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


    MAX5080EVKIT: Evaluation Kit for the MAX5080, MAX5081, MAX5082, MAX5083

    Quality and Environmental Data

    Request Reliability Report for: MAX5082 
    Lead-Free Package Tin (Sn) Whisker Reports
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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