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Maxim > Products > [Power and Battery Management]  [Protection and Isolation]  [Automotive] 
MAX5094A, MAX5094B, MAX5094C, MAX5094D, MAX5095A, MAX5095B, MAX5095C
High-Performance, Single-Ended, Current-Mode PWM Controllers

1MHz, Single-Ended, Current-Mode PWM Controllers with UCC28C43/UCC28C45-Series Pin Compatibility


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 304kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description

The MAX5094A/B/C/D/MAX5095A/B/C BiCMOS, high-performance, current-mode PWM controllers have all the features required for wide input-voltage range isolated/nonisolated power supplies. These controllers are used for low- and high-power universal input voltage and telecom power supplies.

The MAX5094/MAX5095 contain a fast comparator with only 60ns typical delay from current sense to the output for overcurrent protection. The MAX5094 has an integrated error amplifier with the output at COMP. Softstart is achieved by controlling the COMP voltage rise using external components.

The oscillator frequency is adjustable from 20kHz to 1MHz with an external resistor and capacitor. The timing capacitor discharge current is trimmed allowing for programmable dead time and maximum duty cycle for a given frequency. The available saw-toothed waveform at RTCT can be used for slope compensation when needed.

The MAX5095A/MAX5095B include a bidirectional synchronization circuit allowing for multiple controllers to run at the same frequency to avoid beat frequencies. Synchronization is accomplished by simply connecting the SYNC of all devices together. When synchronizing with other devices, the MAX5095A/MAX5095B with the highest frequency synchronizes the other devices. Alternatively, the MAX5095A/MAX5095B can be synchronized to an external clock with an open-drain output stage running at a higher frequency.

The MAX5095C provides a clock output pulse (ADV_CLK) that leads the driver output (OUT) by 110ns. The advanced clock signal is used to drive the secondary-side synchronous rectifiers.

The MAX5094A/B/C are available in the 8-pin SO and 8-pin µMAX® packages. The MAX5094D and MAX5095A/B/C are available in the 8-pin µMAX package. All devices operate over the automotive temperature range of -40°C to +125°C.

Key Features   Applications/Uses
  • Pin-for-Pin Replacement for UCC28C43 (MAX5094A) and UCC28C45 (MAX5094B)
  • 2A Drive Source and 1A Sink Capability
  • Up to 1MHz Switching Frequency Operation
  • Bidirectional Frequency Synchronization (MAX5095A/MAX5095B)
  • Advanced Output Drive for Secondary-Side Synchronous Rectification (MAX5095C)
  • Fast 60ns Cycle-by-Cycle Current Limit
  • Trimmed Oscillator Capacitor Discharge Current Sets Maximum Duty Cycle Accurately
  • Accurate ±5% Start Voltage with 0.8V Hysteresis
  • Low 32µA Startup Current
  • 5V Regulator Output (REF) with 20mA Capability
  • Versions with 0.3V Current-Sense Threshold
  • Overtemperature Shutdown

  
  		• Computer Systems/Servers
  		• Industrial Power Conversion
  		• Isolated Keep-Alive Circuits
  		• Isolated Power-Supply Modules
  		• Isolated Telecom Power Supplies
  		• Networking Systems
  		• Universal Input AC/DC Power Supplies

    Key Specifications:  Isolated Power Supplies
    Part Number VIN
    (V)    		 VIN
    (V)    		 Topology Features Cntrl. Loop Feedback Freq.
    (kHz)    		 Duty Cycle
    (%)    		 ISTARTUP
    (mA)    		 ICC
    (mA)    		 Gate Drive Current
    (A)    		 Oper. Temp.
    (°C)    		 Price
    min max min max max max max See Notes
    MAX5094  8.4 26.5
    Flyback
    Single-Ended Forward
    Adjustable Frequency
    High Voltage Start-Up Circuit
    Internal Error Amplifier
    Thermal Shutdown
    UVLO
    		 Current Mode
    Linear
    Opto
    		 1000
    50
    100
    		 0.065 3 2 -40 to +125 $0.64 @1k
    MAX5095 
    Adjustable Frequency
    High Voltage Start-Up Circuit
    Synchronizable Freqeuncy
    Thermal Shutdown
    UVLO
    		 Opto $0.64 @1k
    See All Isolated Power Supplies (31)

    Diagram
    MAX5094A, MAX5094B, MAX5094C, MAX5094D, MAX5095A, MAX5095B, MAX5095C: Typical Application Circuit
    Typical Application Circuit

    Design Guides
  		• Automotive (PDF)

    Reliability Reports
  		• Reliability Report: MAX5094A.pdf
  		• 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: 1-40 of 40

    MAX5094A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5094AASA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094AASA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094AASA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094AASA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094AAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094AAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094AAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094AAUA+T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094B Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5094BASA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094BASA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094BASA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094BASA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094BAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094BAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094BAUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094BAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094C Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5094CASA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-4*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094CASA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094CASA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094CASA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094CAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094CAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094CAUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094CAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094D Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5094DAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5094DAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5094DAUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5094DAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5095A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5095AAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5095AAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5095AAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5095AAUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5095B Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5095BAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5095BAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5095BAUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5095BAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5095C Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5095CAUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5095CAUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5095CAUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5095CAUA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet

    More Information
  		• New Product Press Release 2005-11-21 

    Related Products
    MAX5068 High-Frequency, Current-Mode PWM Controller with Accurate Programmable Oscillator
    MAX5069 High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers
    MAX5021, MAX5022 Current-Mode PWM Controllers for Isolated Power Supplies
    MAX5070, MAX5071 High-Performance, Single-Ended, Current-Mode PWM Controllers
    MAX5052, MAX5052A, MAX5052B, MAX5053, MAX5053A, MAX5053B Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies

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    Document Ref.: 19-3864; Rev 3; 2006-10-16
    This page last modified: 2007-08-30


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