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TPS3818G125 Status: PREVIEW

Low Quiescent Current, Programmable-Delay Supervisory Circuit


      
         
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Functional Block Diagram


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 TPS3818G01 TPS3818G09 TPS3818G12 TPS3818G125TPS3818G15 TPS3818G18 TPS3818G25 TPS3818G30 TPS3818G33 
No. of Supervisors1  1  1  1  1  1  1  1  1  
Vit1(Typ)(V)Adj  0.84  1.12  1.16  1.4  1.67  2.33  2.79  3.07  
Reset Threshold Accuracy(%)0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  0.5  
Time Delay(ms)      Prog    
# of supplies monitored1  1  1  1  1  1  1  1  1  
IDD(Typ)(uA)2.4  2.4  2.4  2.4  2.4  2.4  2.4  2.4  2.4  
Pin/Package6SON  6SON  6SON  6SON  6SON  6SON  6SON  6SON  6SON  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 Inventory Not AvailableInventory Not AvailableInventory Not AvailableInventory Not AvailableInventory Not AvailableInventory Not AvailableInventoryInventory Not AvailableInventory Not Available

Product Information

Features

  • Power-On Reset Generator withAdjustable Delay Time: 1.25ms to 10s
  • Very Low Quiescent Current: 2.4µA typ
  • High Threshold Accuracy: 0.5% typ
  • Fixed Threshold Voltages for Standard Voltage Rails from 0.9V to 5V and Adjustable Voltage Down to 0.4V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: -40°C to +125°C
  • Small SOT23 and 2mm × 2mm QFN Packages
  • APPLICATIONS
    • DSP or Microcontroller Applications
    • Notebook/Desktop Computers
    • PDAs/Hand-Held Products
    • Portable/Battery-Powered Products
    • FPGA/ASIC Applications

PowerPAD Is a trademark of Texas Instruments
All other trademarks are the property of their respective owners

Description

The TPS3818xxx family of microprocessor supervisory circuitsmonitor system voltages from 0.4V to 5.0V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3818 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3V. The reset delay time can be set to 20ms by disconnecting the CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25ms and 10s by connecting the CT pin to an external capacitor. When used with an external capacitor, the TPS3818xxx gives a more accurate delay time than the similar TPS3808xxx device. The TPS3818 has a very low typical quiescent current of 2.4µA so it is well-suited to battery-powered applications. It is available in either a small SOT23 and an ultra-small 2mm × 2mm QFN PowerPAD package, and is fully specified over a temperature range of -40°C to +125°C (TJ).

    

Pricing / Packaging / CAD Design Tools / Samples

PackagingSamples
DeviceStatusTemp (oC)Package | PinsSamples
TPS3818G125DRVRPREVIEW-40 to 125SON (DRV) | 6 Not Available
TPS3818G125DRVTPREVIEW-40 to 125SON (DRV) | 6 Not Available

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