TEA1761T

Synchronous rectification controller with integrated feedback and protection


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The TEA1761T is a member of the new generation of Synchronous Rectifier (SR) controller ICs for switched mode power supplies. Its high level of integration allows the design of a cost-effective power supply with a very low number of external components. The TEA1761T is a controller IC dedicated for synchronous rectification on the secondary side of discontinuous conduction mode and quasi resonant flyback converters. Besides electronics for synchronous rectification, it also has integrated circuitry for output voltage and output current regulation. The TEA1761T is fabricated in a Silicon On Insulator (SOI) process. This NXP SOI process makes possible a wide range of operation.

Features and benefits

  • Combined synchronous rectification and primary feedback control functionality
  • Wide supply voltage range (8.6 V to 38 V)
  • High level of integration, resulting in a very low external component count
  • Wide opto coupler output voltage range (3.5 V to 38 V)
  • Accurate internal voltage reference for voltage control (within 1 %)
  • High driver output voltage of 10 V to drive all MOSFET brands to the lowest RDSon
  • Low current consumption
  • High system efficiency from no load to full load
  • Undervoltage protection
  • Internal over-temperature protection

Applications

  • Intended for adapters and other discontinuous conduction mode systems
All information on this product information page is subject to the subsequent disclaimers:
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Parametric search

Show functional diagram

Block diagram: TEA1761T
Block diagram: TEA1761T

Demo boards

SSL4101DB01SSL4101DB01

SSL4101DB01 150 W SSL reference design

SSL4101DB02SSL4101DB02

SSL4101DB02 150 W 4x 1A SSL reference design


Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
Isinksink currentvoltage on pin DRIVER = 9.5 V2.22.7A
Isourcesource currentVCC = 15 V; voltage on pin DRIVER = 2 V-0.3-0.25-0.2A
tact(sr)(min)minimum synchronous rectification activation timeShort time1.522.5µs
td(act)(drv)driver activation delay time125ns
Tjjunction temperature-20150°C
V_deact(drv)driver deactivation voltage-12mV
V_reg(drv)driver regulation voltage-65-55-45mV
Vact(drv)driver activation voltage-340-310-280mV
VCCsupply voltagecontinuous-0.438V

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
TEA1761T/N2/DGTEA1761T/N2/DG,1189352 886 52118Volume productionSOT96-1
(SO8) 		Tape reel smdStandard Marking

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
TEA1761T/N2TEA1761T/N2,1189352 842 11118Withdrawn
Replacement product		SOT96-1
(SO8) 		Tape reel smdStandard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1SRSENSEsynchronous timing inputPin configuration for TEA1761TSOT96-1
2GNDground
3n.c.not connected
4DRIVERdriver output for SR MOSFET
5OPTOopto coupler driver output
6VSENSEsense input for voltage control
7ISENSEsense input for current control
8VCCsupply voltage

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT96-1SO8plastic small outline package; 8 leads; body width 3.9 mmMS-012 (JEDEC); 076E03 (IEC); 2003-02-18

Related documents

Leaflet

Other type

Reflow soldering

Selection guide

Wave soldering

Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
TEA1761T/N293528421111831-Dec-1030-Jun-11TEA1761T/N2/DGDN 66
  • Multi source product
  • Standard availability
Standard End of Life. A change over to DG only.

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
TEA1761T/N2/DGTEA1761T/N2/DG,118TEA1761T/N2/DGAlways Pb-free11

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
TEA1761T/N2TEA1761T/N2,118Not availableAlways Pb-free11
Quality and reliability disclaimer

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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
TEA1761T/N293528421111831-Dec-1030-Jun-11TEA1761T/N2/DGDN 66
  • Multi source product
  • Standard availability
Standard End of Life. A change over to DG only.

Documentation for this product

File nameTitleTypeFormatDate
TEA1761TGreenChip synchronous rectifier controllerData sheetpdf2007-04-25
AN10580GreenChip TEA1761 synchronous rectification and feedback controllerApplication notepdf2008-03-19
AN10831SSL2102 30 W flyback triac dimmable LED driverApplication notepdf2011-03-23
001aan129GreenChip logoLogogif2012-04-20

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
TEA1761T/N2/DG9352 886 52118TEA1761T/N2/DG,118NADIGI-KEY CORPORATION3,5905/24/2013Buy online 
   NAARROW ELECTRONICS2,5005/24/2013Buy online 
   ASIAWPI2,500250005/24/2013Buy online 
   NAMOUSER ELECTRONICS2,0575/24/2013Buy online 
   ASIAElement 140124/05/2013Buy online 

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Demo boards

SSL4101DB01
SSL4101DB01

SSL4101DB01 150 W SSL reference design

SSL4101DB02
SSL4101DB02

SSL4101DB02 150 W 4x 1A SSL reference design

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