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UCC3750 Status: ACTIVE

Source Ringer Controller


      
         
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Datasheet

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 UCC2750 UCC3750
Operating Supply(Min)(V)4.5  4.5  
Operating Supply(Max)(V)5.5  5.5  
Operating Supply Current(mA)0.5  0.5  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UCC2750: Source Ringer Controller
  • TPS63000: 96% Buck-Boost Converter with 1.8A Current Switches in 3x3 QFN
  • TPS51125: Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs
  • TPS74201: Single Output LDO, 1.5A, Adj.(0.8 to 3.3V), Any or No Cap, Programmable SoftStart

Product Information

Features

  • Provides Control for Flyback Based Four Quadrant Amplifier Topology
  • Onboard Sine Wave Reference with Low THD
  • Selectable Ringing Frequency for Different Phone Systems (20Hz, 25Hz and 50Hz)
  • Programmable Output Amplitude and DC Offset
  • DC Current Limiting for Short Circuit Protection
  • Secondary Side Voltage Mode Control
  • Operates from a Single 5V Supply

Description

The UCC3750 Source Ringer Controller provides a complete control and drive solution for a four quadrant flyback-based ring generator circuit. The IC controls a primary side switch, which is modulated when power transfer is taking place from input to output. It also controls two secondary switches which act as synchronous rectifier switches during positive power flow. These switches are pulse-width-modulated when the power is being delivered back to the source.

The UCC3750 has an onboard sine wave reference with programmable frequencies of 20Hz, 25Hz and 50Hz. The reference is derived from a high-frequency (32kHz) crystal connected externally. Two frequency-select pins control an internal divider to give a sinusoidal output at 20Hz, 25Hz or 50Hz.

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Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC3750DWACTIVE0 to 707.60 | 1kuSOIC (DW) | 28 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC3750DWG4ACTIVE0 to 707.60 | 1kuSOIC (DW) | 28 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC3750DWTRACTIVE0 to 706.90 | 1kuSOIC (DW) | 28 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC3750DWTRG4ACTIVE0 to 706.90 | 1kuSOIC (DW) | 28 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC3750NACTIVE0 to 707.60 | 1kuPDIP (N) | 28 View 13 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC3750NG4ACTIVE0 to 707.60 | 1kuPDIP (N) | 28 View 13 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 9:50 AM GMT, 26 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCC3750DW
AmericasRochester Electronics >1k
EuropeCompel 690
WorldwideDigiKey 114
TI Lead Time*: 20 WeeksUCC3750DWG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC3750DWTR
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC3750DWTRG4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC3750N
AmericasNewark 51
Rochester Electronics >1k
AsiaFarnell Asia 51
TI Lead Time*: 14 WeeksUCC3750NG4
WorldwideMouser Electronics 37
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
UCC3750DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC3750DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC3750DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC3750DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC3750N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UCC3750NG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

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Datasheet

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Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
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TPS74201 Single Output LDO, 1.5A, Adj.(0.8 to 3.3V), Any or No Cap, Programmable SoftStart LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
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