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Maxim > Products > [Power and Battery Management] 
MAX5052, MAX5052A, MAX5052B, MAX5053, MAX5053A, MAX5053B
Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies

Isolated/Nonisolated Current-Mode PWM Controllers Work with Universal Offline, Telecom, or 12V Input Voltage


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 356kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX5052/MAX5053 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX5052 is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX5053 is well suited for low-input-voltage (10.8VDC to 24VDC) power supplies.

The MAX5052/MAX5053 contain an internal error amplifier that regulates the tertiary winding output voltage. This implements a primary-side regulated, isolated power supply, eliminating the need for an optocoupler. An input undervoltage lockout (UVLO) is provided for programming the input-supply start voltage and to ensure proper operation during brownout conditions. The input-supply start voltage is externally programmable with a voltage-divider. To shutdown the device, the UVLO pin is pulled low. Internal digital soft-start reduces output voltage overshoot. The internal thermal shutdown circuit protects the device in the event the junction temperature exceeds +130°C.

The MAX5052 has an internal bootstrap UVLO with large hysteresis that requires a minimum voltage of 23.6V for startup. The MAX5053 does not have the internal bootstrap UVLO and can be biased directly from a minimum voltage of 10.8V.

The 262kHz switching frequency is internally trimmed to ±12% accuracy; this allows the optimization of the magnetic and filter components resulting in compact, cost-effective power supplies. The MAX5052A/MAX5053A are offered with a 50% maximum duty-cycle limit. The MAX5052B/MAX5053B are offered with a 75% maximum duty-cycle limit. These devices are available in 8-pin µMAX packages and operate over the -40°C to +85°C temperature range.

An evaluation kit is available:  MAX5052AEVKIT  

Key Features   Applications/Uses
  • Available in a Tiny 8-Pin µMAX Package
  • Current-Mode Control
  • 50W Output Power
  • Universal Offline Input Voltage Range
    • Rectified 85VAC to 265VAC (MAX5052)
  • VIN Directly Driven from 10.8V to 24V Input (MAX5053)
  • Digital Soft-Start
  • Programmable Input Startup Voltage
  • Internal Bootstrap UVLO with Large Hysteresis (MAX5052)
  • Internal Error Amplifier with 1% Accurate Reference
  • Thermal Shutdown
  • 45µA (typ) Startup Supply Current
  • 1.4mA (typ) Operating Supply Current
  • Fixed Switching Frequency of 262kHz ±12%
  • 50% Maximum Duty-Cycle Limit (MAX5052A/MAX5053A)
  • 75% Maximum Duty-Cycle Limit (MAX5052B/MAX5053B)
  • 60ns Cycle-by-Cycle Current-Limit Response Time

 
  		• 12V Boost Regulators
  		• 12V SEPIC Regulators
  		• Computer Systems/Servers
  		• Industrial Power Conversion
  		• Isolated Keep-Alive Circuits
  		• Isolated Telecom Power Supplies
  		• Networking Systems
  		• Power Supplies
  		• Universal Input AC

    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
    MAX5052  21.6 375
    Flyback
    Single-Ended Forward
    High Voltage Start-Up Circuit
    Internal Error Amplifier
    Thermal Shutdown
    UVLO
    		 Current Mode
    Linear
    Opto
    		 262
    50
    75
    		 0.045 1.4 1 -40 to +85 $0.66 @1k
    MAX5053  10.8 24 $0.66 @1k
    See All Isolated Power Supplies (31)

    Diagram
    MAX5052, MAX5053: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 2043: A Compact, Isolated Power Supply, 48V to 3.3V at 7A - MAX5052A
  		• Application Note 2400: A Compact 36-72V DC Input, 3.3V/10A Output Power Supply - MAX5052, MAX5052A
  		• Application Note 3363: New Ethernet Systems Distribute DC Power with Data - MAX5052, MAX5053

    Evaluation Kits
  		• MAX5052AEVKIT

    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: 1-18 of 18

    MAX5052A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5052AEUA-G05    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX5052AEUA-TG05    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5052AEUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5052AEUA-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 +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5052AEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5052AEUA+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 +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5052B Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5052BEUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5052BEUA-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 +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5052BEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5052BEUA+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 +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5053A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5053AEUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5053AEUA-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 +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5053AEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5053AEUA+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 +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5053B Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5053BEUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5053BEUA-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 +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX5053BEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5053BEUA+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 +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• New Product Press Release 2002-11-06 

    Related Products
    MAX5021, MAX5022 Current-Mode PWM Controllers for Isolated Power Supplies

    More Like This: View Product Families for Similar Products

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     Description 
     Key Features 
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     Diagram 

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    Document Ref.: 19-2590; Rev 1; 2004-03-11
    This page last modified: 2009-06-01


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