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UCC2946-Q1 Status: ACTIVE

Automotive Catalog Microprocessor Supervisor With Watchdog Timer


      
         
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 UCC2946-Q1
No. of Supervisors1  
Reset Threshold Accuracy(%)2  
Time Delay(ms)Prog  
IDD(Typ)(uA)12  
Pin/Package8TSSOP  
RatingAutomotive  
 Samples
 Inventory

Other qualified versions of UCC2946-Q1

Version Part Number Definition
Catalog UCC2946 TI's standard catalog product

Customers Who Evaluated This Product Also Evaluated

  • UCC2946: Microprocessor Supervisor with Watchdog Timer
  • TL431B: Adjustable Precision Shunt Regulator
  • TPS61161: White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm QFN Package
  • TPS65053: 5-Channel Power Mgmt IC with two step down converters and 3 low-input voltage LDOs

Product Information

Features

  • Qualified for Automotive Applications
  • Fully Programmable Reset Threshold
  • Fully Programmable Reset Period
  • Fully Programmable Watchdog Period
  • 2% Accurate Reset Threshold
  • Input Voltage Down to 2 V
  • Input 18-µA Maximum Input Current
  • Reset Valid Down to 1 V

Description

The UCC2946 is designed to provide accurate microprocessor supervision, including reset and watchdog functions. During power up, the device asserts a reset signal RES with VDD as low as 1 V. The reset signal remains asserted until the VDD voltage rises and remains above the reset threshold for the reset period. Both reset threshold and reset period are programmable by the user.

The UCC2946 is also resistant to glitches on the VDD line. Once RES has been deasserted, any drops below the threshold voltage need to be of certain time duration and voltage magnitude to generate a reset signal. These values are shown in. An I/O line of the microprocessor may be tied to the watchdog input (WDI) for watchdog functions.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC2946TPWRQ1ACTIVE-40 to 1051.60 | 1kuTSSOP (PW) | 8 View 2000 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 9:49 AM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCC2946TPWRQ1
None Reported
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** 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
UCC2946TPWRQ1 RoHS Compliant Pb-Free (RoHS) CU NIPDAU 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 UCC2946-Q1 Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCC2946 Microprocessor Supervisor with Watchdog Timer POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS) TI customers also evaluated this product.
TL431B Adjustable Precision Shunt Regulator VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE TI customers also evaluated this product.
TPS61161 White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm QFN Package LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
TPS65053 5-Channel Power Mgmt IC with two step down converters and 3 low-input voltage LDOs POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER TI customers also evaluated this product.
TPS2046B Current-Limited Power-Distribution Switches PCMCIA AND USB-USB POWER SWITCHES TI customers also evaluated this product.
TPS23753A IEEE 802.3-2005 PoE Interface and Isolated Converter Controller with Enhanced ESD Ride-Through POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES TI customers also evaluated this product.
TPS51100 3A Source/Sink DDR terminator Regulator LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
REF02 +5V Precision Voltage Reference VOLTAGE REFERENCE-SERIES VOLTAGE REFERENCE TI customers also evaluated this product.
TPS79333 Single Output LDO, 200mA, Fixed(3.3V), High PSRR, Low Noise LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
TPS2151 Adjustable LDO Plus 5V Switch with Dual Current Limit for High Power USB Peripherals PCMCIA AND USB-USB POWER CONTROLLERS TI customers also evaluated this product.
TPS54620 4.5V to 17V Input, 6A Synchronous Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.

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