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TPS22949 Status: ACTIVE

Current Limited Load Switch With Low Noise Regulation Capability


      
         
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 TPS22941 TPS22942 TPS22943 TPS22944 TPS22945 TPS22946 TPS22949TPS22949A 
Adjustable Current Limit(Min)(A)0.04  0.1  0.04  0.1  0.1  0.155 ,0.07 ,0.03  0.1  0.1  
rDS(on) per FET(Typ)(mOhms)400  400  400  400  400  300  300  300  
Number of FETs1  1  1  1  1  1  2  2  
Enable/ShutdownActive Low  Active Low  Active High  Active High  Active High  Active High  Active High  Active High  
Vin(Min)(V)1.62  1.62  1.62  1.62  1.62  1.62  1.62  1.62  
Vin(Max)(V)5.5  5.5  5.5  5.5  5.5  5.5  4.5  4.5  
Iq(Typ)(uA)40  40  40  40  40  1  85  85  
Pin/Package5SC70  5SC70  5SC70  5SC70  5SC70  6DSBGA  8DSBGA  8DSBGA, 8SON  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS22949A: Current Limited Load Switch With Low Noise Regulation Capability and Inrush Current Limit
  • TPS51220A: Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller
  • TPS61165: High Brightness White LED Driver in 2mm x 2mm QFN Package
  • TPS51117: 1.8V to 28V Input Sync. Step Down Controller with DCAP™ Mode, Optimized for Light Load Efficiency

Product Information

Features

  • Integrated Current Limiter
    • Input Voltage Range: 1.62 V to 4.5 V
    • Low ON-Resistance
      rON = 300-m at VIN = 4.5 V
      rON = 350-m at VIN = 3.3 V
      rON = 400-m at VIN = 2.5 V
      rON = 600-m at VIN = 1.8 V
    • Integrated 100-mA Minimum Current Limit
    • Undervoltage Lockout
    • Fast-Current Limit Response Time
    • Integrated Fault Blanking and Auto Restart
  • Stable Without Current Limiter Output Capacitor (TPS22949A Only)
  • Integrated Low-Noise RF LDO
    • Input Voltage Range: 1.62 V to 4.5 V
    • Low Noise: 50 µVrms (10 Hz to 100 kHz)
    • 80-dB VIN PSRR (10 Hz to 10 kHz)
    • Fast Start-Up Time: 130 µs
    • Low Dropout 100 mV at Iload =100 mA
    • Integrated Output Discharge
    • Stable With 2.2-µF Output Capacitor
  • 1.8-V Compatible Control Input Threshold
  • ESD Performance Tested Per JESD 22
    • 3500-V Human-Body Model
      (A114-B, Class II)
    • 1000-V Charged-Device Model
      (C101)

View All Features in Datasheet

Description

The TPS22949 and TPS22949A are devices that provides protection to systems and loads in high-current conditions. The device contains a 500-m current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 4.5 V as well as a low-dropout (LDO) regulator with a fixed output voltage of 1.8 V.

The switch is controlled by an on/off input (EN1), which is capable of interfacing directly with low-voltage control signals. When the switch current reaches the maximum limit, the TPS22949/TPS22949A operates in a constant-current mode to prohibit excessive currents from causing damage. If the constant current condition still persists after 12 ms, these devices shut off the switch and pull the fault signal pin (OC) low.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSamples
TPS22949YZPRACTIVE-40 to 850.70 | 1kuDSBGA (YZP) | 8 3000 | LARGE T&R

* 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 9:56 AM GMT, 09 Feb 2010
RegionCompanyIn StockPurchase
TI Lead Time*: 10 WeeksTPS22949YZPR
AmericasArrow >1k
Avnet >1k
Newark >1k
AsiaWPI >1k
WorldwideDigiKey >1k
Mouser Electronics >1k
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
TPS22949YZPR RoHS Compliant Green (RoHS & no Sb/Br) SNAGCU 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 TPS22949 Help

Datasheet

Application Notes

More Literature

Customers Who Evaluated This Product Also Evaluated...
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TPS22949A Current Limited Load Switch With Low Noise Regulation Capability and Inrush Current Limit POWER MUXES AND CURRENT LIMITED SWITCHES-CURRENT LIMITED SWITCHES TI customers also evaluated this product.
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TPS61165 High Brightness White LED Driver in 2mm x 2mm QFN Package LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
TPS51117 1.8V to 28V Input Sync. Step Down Controller with DCAP™ Mode, Optimized for Light Load Efficiency NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
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