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MAX5038A, MAX5041A
Dual-Phase, Parallelable, Average-Current-Mode Controllers


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Data Sheet
FULL DATA SHEET (PDF, 696kB)
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Description
The MAX5038A/MAX5041A dual-phase, PWM controllers provide high-output-current capability in a compact package with a minimum number of external components. The MAX5038A/MAX5041A utilize a dual-phase, average-current-mode control that enables optimal use of low RDS(ON) MOSFETs, eliminating the need for external heatsinks even when delivering high output currents.

Differential sensing enables accurate control of the output voltage, while adaptive voltage positioning provides optimum transient response. An internal regulator enables operation with input voltage ranges of +4.75V to +5.5V or +8V to +28V. The high switching frequency, up to 500kHz per phase, and dual-phase operation allow the use of low-output inductor values and input capacitor values. This accommodates the use of PC board-embedded planar magnetics achieving superior reliability, current sharing, thermal management, compact size, and low system cost.

The MAX5038A/MAX5041A also feature a clock input (CLKIN) for synchronization to an external clock, and a clock output (CLKOUT) with programmable phase delay (relative to CLKIN) for paralleling multiple phases. The MAX5038A/MAX5041A also limit the reverse current in case the bus voltage becomes higher than the regulated output voltage. The MAX5038A offers a variety of factory-trimmed preset output voltages (see Selector Guide) and the MAX5041A offers an adjustable output voltage between +1.0V to +3.3V.

The MAX5038A/MAX5041A operate over the extended temperature range (-40°C to +85°C) and are available in a 28-pin SSOP package. Refer to the MAX5037A and MAX5065/MAX5067 data sheets for a VRM 9.0/VRM 9.1- compatible, VID-controlled, adjustable output voltage controller in a 44-pin MQFP/thin QFN or 28-pin SSOP package.

Key Features   Applications/Uses
  • +4.75V to +5.5V or +8V to +28V Input Voltage Range
  • Up to 60A Output Current
  • Internal Voltage Regulator for a +12V or +24V Power Bus
  • True Differential Remote Output Sensing
  • Two Out-Of-Phase Controllers Reduce Input Capacitance Requirement and Distribute Power Dissipation
  • Average-Current-Mode Control
    • Superior Current Sharing Between Individual Phases and Paralleled Modules
    • Accurate Current Limit Eliminates MOSFET and Inductor Derating
  • Limits Reverse-Current Sinking in Paralleled Modules
  • Integrated 4A Gate Drivers
  • Selectable Fixed Frequency 250kHz or 500kHz per Phase (Up to 1MHz for Two Phases)
  • Fixed (MAX5038A) or Adjustable (MAX5041A) Output Voltages
  • External Frequency Synchronization from 125kHz to 600kHz
  • Internal PLL with Clock Output for Paralleling Multiple DC-DC Converters
  • Thermal Protection
  • 28-Pin SSOP Package

 
  • High-End Desktop Computers
  • Large-Memory Arrays
  • Networking Systems
  • Point-of-Load High-Current/High-Density Telecom DC-DC Regulators
  • RAID Systems
  • Servers and Workstations

    Key Specifications:   Step-Down Switching Regulators
    Part Number VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) Preset VOUT (V) IOUT (A) IOUT (A) Output Adj. Method Operating Current, ICC (max) (mA) Number of DC-DC Outputs Operating Freq. (kHz) Package Smallest Available Package (max w/pins) (mm2) Price**
    MAX5038A  4.75 28 1.2 3.3 1.2
    1.5
    1.8
    2.5
    3.3
    60 60 Preset 10 1 500 SSOP/28 82 $2.10 @ 1k
    MAX5041A  1  -  Resistor  
    See All Step-Down Switching Regulators (252)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

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    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-12 of 12

    MAX5038A Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5038AEAI12  
    SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5038AEAI12-T  


    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX5038AEAI15  
    SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +85°C See data sheet
    Materials Analysis
    MAX5038AEAI15-T  


    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX5038AEAI18  
    SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +85°C See data sheet
    Materials Analysis
    MAX5038AEAI18-T  


    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX5038AEAI25  
    SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +85°C See data sheet
    Materials Analysis
    MAX5038AEAI25-T  


    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX5038AEAI33  
    SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5038AEAI33-T  


    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX5041A Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5041AEAI  
    SSOP;28 pin;82 mm²
    Outline Drawing: 21-0056 (PDF)
    Land Pattern: 90-0095 (PDF)
    Use pkgcode/variation: A28-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5041AEAI-T  


    Land Pattern: Not Available

    -40°C to +85°C See data sheet

    Related Products
    MAX5038, MAX5041 Dual-Phase, Parallelable, Average Current-Mode Controllers

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    Document Ref.: 19-3034; Rev 0; 2003-11-07
    This page last modified: 2007-08-17


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