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TPS3823-33 Status: ACTIVE

Supply Voltage Supervisor w/Watchdog input and manual reset


      
         
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 TPS3823-25 TPS3823-30 TPS3823-33TPS3823-50 
No. of Supervisors1  1  1  1  
Vit1(Typ)(V)2.25  2.63  2.93  4.55  
Reset Threshold Accuracy(%)2.2  2.3  2.4  2  
Time Delay(ms)200  200  200  200  
IDD(Typ)(uA)15  15  15  15  
Pin/Package5SOT-23  5SOT-23  5SOT-23  5SOT-23  
RatingCatalog  Catalog  Catalog  Catalog  
 SamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventory

Other qualified versions of TPS3823-33

Version Part Number Definition
Automotive TPS3823-33-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Customers Who Evaluated This Product Also Evaluated

  • TLC7733: Single SVS For 3.3V Systems W/Programmable Time Delay
  • TPS3823-25: Supply Voltage Supervisor w/Watchdog input and manual reset
  • TPS3809K33: 3-Pin Supply Voltage Supervisor
  • TPS2042B: Dual, Current-Limited, Power-Distribution Switches
  • TPS74801: Single Output LDO, 1.5A, Adj. (0.8 to 3.6V), Programmable Soft-Start
  • BQ2057W: Low Dropout Linear 2-cell Li-Ion Charge Controller with AutoCompTM, 8.4V

Product Information

Features

  • Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820)
  • Manual Reset Input (TPS3820/3/5/8)
  • Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824) and Open-Drain (TPS3828)
  • Supply Voltage Supervision Range
        2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog Timer (TPS3820/3/4/8)
  • Supply Current of 15 µA (Typ)
  • SOT23-5 Package
  • Temperature Range: –40°C to +85°C
  • APPLICATIONS
    • Applications Using DSPs, Microcontrollers, or Microprocessors
    • Industrial Equipment
    • Programmable Controls
    • Automotive Systems
    • Portable/Battery-Powered Equipment
    • Intelligent Instruments
    • Wireless Communications Systems
    • Notebook/Desktop Computers

All trademarks are the property of their respective owners.

Description

The TPS382x family of supervisors provides circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power-on, RESET is asserted when supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage VIT– . An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT–. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage VIT– set by an internal voltage divider.

The TPS3820/3/5/8 devices incorporate a manual reset input, MR. A low level at MR causes RESET to become active. The TPS3824/5 devices include a high-level output RESET. TPS3820/3/4/8 have a watchdog timer that is periodically triggered by a positive or negative transition at WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval, ttout, RESET becomes active for the time period td. This event also reinitializes the watchdog timer. Leaving WDI unconnected disables the watchdog. In applications where the input to the WDI pin may be active (transitioning high and low) when the TPS3820/3/4/8 is asserting RESET, the TPS3820/3/4/8 does not return to a non-reset state when the input voltage is above Vt. If the application requires that input to WDI is active when RESET is asserted, WDI must be decoupled from the active signal. This decoupling can be accomplished by using an N-channel FET in series with the WDI pin, with the gate of the FET connected to the RESET output as shown in Figure 1.

The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a SOT23-5 package. The TPS382x devices are characterized for operation over a temperature range of –40°C to +85°C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
TPS3823-33DBVRACTIVE-40 to 850.70 | 1kuSOT-23 (DBV) | 5 View 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
TPS3823-33DBVRG4ACTIVE-40 to 850.70 | 1kuSOT-23 (DBV) | 5 View 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
TPS3823-33DBVTACTIVE 0.80 | 1kuSOT-23 (DBV) | 5 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TPS3823-33DBVTG4ACTIVE 0.80 | 1kuSOT-23 (DBV) | 5 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples

* 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 10:05 AM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksTPS3823-33DBVR
AmericasAvnet >1k
AsiaFarnell Asia 191
WPI 872
EuropeAbacus Polar >1k
Avnet-SILICA >1k
Farnell 162
TI Lead Time*: 20 WeeksTPS3823-33DBVRG4
EuropeEBV Elektronik >1k
TI Lead Time*: 20 WeeksTPS3823-33DBVT
AmericasRochester Electronics 1k
EuropeArrow Southern Europe 500
Avnet-SILICA >1k
TI Lead Time*: 20 WeeksTPS3823-33DBVTG4
AsiaFarnell Asia 582
EuropeEBV Elektronik >1k
Farnell 487
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
TPS3823-33DBVR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS3823-33DBVRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS3823-33DBVT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS3823-33DBVTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* 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 TPS3823-33 Help

Datasheet

Application Notes

View Application Notes for Supervisory Circuits(Voltage Supervisors)

Customers Who Evaluated This Product Also Evaluated...
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