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BQ2205LY Status: ACTIVE

Battery Back-up Supervisor for Dual SRAM Banks


      
         
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Datasheet

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 BQ2205LY
No. of Supervisors1  
Vit1(Typ)(V)2.9  
Reset Threshold Accuracy(%)1.7  
IDD(Typ)(uA)210  
Pin/Package16TSSOP  
RatingCatalog  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • TPS3606-33: Battery-Backup Supervisor for Low Power Processor
  • TPS3619-33: Battery-Backup Supervisors for RAM Retention
  • TPS3620-33: 3.3-V Battery-Backup Supervisors for RAM Retention

Product Information

Features

  • Power Monitoring and Switching for Non-Volatile Control of SRAMs
  • Input Decoder Allows Control of 1 or 2 Banks of SRAM
  • Write-Protect Control
  • 3-V Primary Cell Input
  • 3.3-V Operation
  • Reset Output for System Power-On Reset
  • Less than 20-ns Chip Enable Propagation Delay
  • Small 16-Lead TSSOP Package
  • APPLICATIONS
    • NVSRAM Modules
    • Point-of-Sale Systems
    • Facsimile, Printers and Photocopiers
    • Internet Appliances
    • Servers
    • Medical Instrumentation and Industrial Products

Description

The CMOS bq2205 SRAM non-volatile controller with reset provides all the necessary functions for converting one or two banks of standard CMOS SRAM into non-volatile read/write memory.

A precision comparator monitors the 3.3-V VCC input for an out-of-tolerance condition. When out-of-tolerance is detected, the two conditioned chip-enable outputs are forced inactive to write-protect both banks of SRAM.

Power for the external SRAMs, VOUT, is switched from the VCC supply to the battery-backup supply as VCC decays. On a subsequent power-up, the VOUT supply is automatically switched from the backup supply to the VCC supply. The external SRAMs are write-protected until a power-valid condition exists. The reset output provides power-fail and power-on resets for the system.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2205LYPWACTIVE-20 to 701.95 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2205LYPWG4ACTIVE-20 to 701.95 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2205LYPWRACTIVE-20 to 701.75 | 1kuTSSOP (PW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2205LYPWRG4ACTIVE-20 to 701.75 | 1kuTSSOP (PW) | 16 View 2000 | LARGE 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 11:45 AM GMT, 09 Feb 2010
RegionCompanyIn StockPurchase
TI Lead Time*: 22 WeeksBQ2205LYPW
None Reported
View Distributors
TI Lead Time*: 22 WeeksBQ2205LYPWG4
None Reported
View Distributors
TI Lead Time*: 22 WeeksBQ2205LYPWR
None Reported
View Distributors
TI Lead Time*: 22 WeeksBQ2205LYPWRG4
None Reported
View Distributors
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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
BQ2205LYPW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2205LYPWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2205LYPWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2205LYPWRG4 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 BQ2205LY Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS3606-33 Battery-Backup Supervisor for Low Power Processor POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS) TI customers also evaluated this product.
TPS3619-33 Battery-Backup Supervisors for RAM Retention POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS) TI customers also evaluated this product.
TPS3620-33 3.3-V Battery-Backup Supervisors for RAM Retention POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS) TI customers also evaluated this product.

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