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


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 416kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX5038/MAX5041 dual-phase, PWM controllers provide high-output-current capability in a compact package with a minimum number of external components. The MAX5038/MAX5041 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 MAX5038/MAX5041 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 MAX5038 offers a variety of factory-trimmed preset output voltages (see Selector Guide) and the MAX5041 offers an adjustable output voltage from +1.0V to +3.3V.

The MAX5038/MAX5041 operate over the extended industrial temperature range (-40°C to +85°C) and are available in a 28-pin SSOP package. Refer to the MAX5037 data sheet for a VRM 9.0-compatible, VID-controlled output voltage controller in a 44-pin MQFP or QFN 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
  • Integrated 4A Gate Drivers
  • Selectable Fixed Frequency 250kHz or 500kHz Per Phase (Up to 1MHz for 2 Phases)
  • Fixed (MAX5038) or Adjustable (MAX5041) Output Voltages
  • 0.5% Accurate Reference (MAX5041B)
  • 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
    (V)    		 VIN
    (V)    		 VOUT
    (V)    		 VOUT
    (V)    		 Preset VOUT
    (V)    		 Max. IOUT
    (A)    		 Max. IOUT
    (A)    		 Output Adjust. Method DC-DC Outputs Oper. Freq.
    (kHz)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Price
    min max min max ≥ ≤ max w/pins See Notes
    MAX5038  4.75 28 1.2 3.3
    1.2
    1.5
    1.8
    2.5
    3.3
    		 60 60 Preset 1 500
    SSOP/28
    		 82 -
    MAX5041  1 - Resistor
    SSOP/28
    		 $2.61 @1k
    See All Step-Down Switching Regulators (264)

    Diagram
    MAX5038, MAX5041: Pin Configuration
    Pin Configuration

    Application Notes
  		• Application Note 3177: Powering High-Performance ASICs and Microprocessors - MAX5038

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    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: 1-19 of 19

    MAX5038 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5038EAI33+    
    		Active 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: Lead Free
    Materials Analysis
    MAX5038EAI33+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5038EAI12    
    		Active 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
    MAX5038EAI12-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5038EAI15    
    		Active 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
    MAX5038EAI15-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5038EAI18    
    		Active 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
    MAX5038EAI18-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5038EAI25    
    		Active 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
    MAX5038EAI25-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5038EAI33    
    		Active 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
    MAX5038EAI33-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5041 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5041EVKIT    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX5041EAI  
    		Active 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
    MAX5041EAI-T    
    		Active 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
    MAX5041BEAI  
    		Active 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
    MAX5041BEAI-T    
    		Active 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
    MAX5041EAI+  
    		Active 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: Lead Free
    Materials Analysis
    MAX5041EAI+T    
    		Active 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: Lead Free
    Materials Analysis

    More Information
  		• New Product Press Release 2002-09-03 

    Related Products
    MAX5037 VRM 9.0, Dual-Phase, Parallelable, Average Current-Mode Controller
    MAX5038, MAX5041 Dual-Phase, Parallelable, Average Current-Mode Controllers

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    Document Ref.: 19-2514; Rev 3; 2004-08-13
    This page last modified: 2009-11-04


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