UC3638 Status: ACTIVE

Advanced PWM Motor Controller

      
         
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Datasheet

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 UC3638
Operating Supply(Min)(V)10  
Operating Supply(Max)(V)36  
Operating Supply Current(mA)15  
Peak Output Current(A)0.4  
Pin/Package20PDIP, 20PLCC, 20SOIC  
RatingCatalog  
 Samples
 Inventory

Other qualified versions of UC3638

Version Part Number Definition
Military UC1638 QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

  • UC3176: Full Bridge Power Amplifier
  • UC3770A: High Performance Stepper Motor Drive Circuit
  • UC2637: Switched Mode Controller for DC Motor Drive

More Related Products

Product Information

Features

  • Single or Dual Supply Operation
  • Accurate High Speed Oscillator
  • Differential X5 Current Sense Amplifier
  • Bidirectional Pulse-by-Pulse Current Limiting
  • Programmable Oscillator Amplitude and PWM Deadband
  • Dual 500mA Totem Pole Output Drivers
  • Dual 60V, 50mA Open Collector Drivers
  • Undervoltage Lockout

Description

The UC2638 family of integrated circuits are advanced pulse width modulators intended for a variety of PWM motor drive and amplifier applications requiring either uni-directional or bi-directional drive circuits. Similar in architecture to the UC2637, all necessary circuitry is included to generate an analog error signal and modulate two bi-directional pulse train outputs in proportion to the error signal magnitude and polarity.

Key features of the UC2638 include a programmable high speed triangle oscillator, a 5X differential current sensing amplifier, a high slew rate error amplifier, high speed PWM comparators, and two 50mA open collector as well as two ±500mA totem pole output stages. The individual circuit blocks are designed to provide practical operation to switching frequencies of 500kHz.

Significant improvements in circuit speed, elimination of many external programming components, and the inclusion of a differential current sense amplifier, allow this controller to be specified for higher performance applications, yet maintain the flexibility of the UC2637. The current sense amplifier in conjunction with the error amplifier can be configured for average current feedback. The additional open collector outputs provide a drive signal for the highside switches in a full bridge configuration. The programmable AREFIN pin allows for single or dual supply operation. Oscillator ramp amplitude and PWM deadband are programmable by tapping a voltage divider off the 5V reference to the appropriate programming input (PVSET or DB).

Additional features include a precision externally available 5V reference, undervoltage lockout, pulse-by-pulse peak current limiting, and a remote shutdown port. The UC1638 family is available in the 20 pin N, DW and J packages. Consult the factory for other packaging options.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UC3638DWACTIVE0 to 703.60 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3638DWG4ACTIVE0 to 703.60 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3638DWTRACTIVE0 to 703.30 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3638DWTRG4ACTIVE0 to 703.30 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3638NACTIVE0 to 704.25 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3638NG4ACTIVE0 to 704.25 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3638QACTIVE0 to 704.25 | 1kuPLCC (FN) | 20 View 46 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3638QG3ACTIVE0 to 704.25 | 1kuPLCC (FN) | 20 View 46 | 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

  TI Inventory Status Reported Distributor Inventory
UC3638DWAs of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 10 Weeks AmericasArrow 771
 DigiKey 634
 Mouser Electronics 100
 AsiaWPI 50
 EuropeArrow Southern Europe 275
 EBV Elektronik 1
UC3638DWG4As of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 10 Weeks AmericasAvnet 278
 DigiKey  Available
 EuropeEBV Elektronik 350
 Farnell 66
UC3638DWTRAs of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 8 Weeks AmericasAvnet >1k
 DigiKey  Available
UC3638DWTRG4As of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 8 Weeks AmericasDigiKey  Available
UC3638NAs of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey 479
 Mouser Electronics 45
 Newark 78
 Rochester Electronics 517
 EuropeArrow Southern Europe 500
 Avnet-SILICA 60
 EBV Elektronik 2
UC3638NG4As of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
 EuropeFarnell 61
UC3638QAs of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey 110
 Rochester Electronics 946
UC3638QG3As of 8:09 AM GMT, 03 Jul 2009As of 8:09 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasAvnet 276
 DigiKey  Available
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
UC3638DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3638DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3638DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3638DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3638N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC3638NG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC3638Q RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UC3638QG3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView

* 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

Most useful technical documents for UC3638 Help

Datasheet

Application Notes

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC3176 Full Bridge Power Amplifier   TI customers also evaluated this product.
UC3770A High Performance Stepper Motor Drive Circuit   TI customers also evaluated this product.
UC2637 Switched Mode Controller for DC Motor Drive   TI customers also evaluated this product.
UC3717A Stepper Motor Drive Circuit   TI customers also evaluated this product.
UC3637 Switched Mode Controller for DC Motor Drive   TI customers also evaluated this product.
UC3625 Brushless DC Motor Controller   TI customers also evaluated this product.
UC3770B High Performance Stepper Motor Drive Circuit   TI customers also evaluated this product.

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