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TPS22946 Status: ACTIVE

Ultra-Low Power, Low Input Voltage, Current Limited Load Switch


      
         
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 TPS22941 TPS22942 TPS22943 TPS22944 TPS22945 TPS22946TPS22949 TPS22949A 
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

  • TPS22941: Low-Input Voltage 40mA Current Limited Load Switch with Shut-Off and Auto-Restart Features
  • TPS22944: Low-Input Voltage 100mA Current Limited Load Switch
  • TPS61093: Low Input, 20V/1.1A Step-Up DC/DC Converter with Integrated Power Diode and Input/Output Isolation

Product Information

Features

  • Ultra-Low Quiescent Current 1 µA (typ)
    at VIN = 1.8 V
  • Input Voltage Range: 1.62 V to 5.5 V
  • Low ON-Resistance
    • rON = 300 m at VIN = 5.5 V
    • rON = 400 m at VIN = 3.3 V
    • rON = 500 m at VIN = 2.5 V
    • rON = 600 m at VIN = 1.8 V
  • Selectable Minimum Current Limit:
    155 mA, 70 mA, or 30 mA
  • Integrated Inrush Current Timeout (8 ms)
  • Shutdown Current: < 1 µA
  • Thermal Shutdown
  • Fault Blanking
  • Auto Restart
  • Over-Current Condition Timeout (Automatic Disable
    for Permanent Over-Current)
  • 1.8-V Compatible Control Input
  • ESD Performance Tested Per JESD 22
    • 6000-V Human-Body Model
      (A114-B, Class II)
  • Tiny WCSP Package 1.4mm &timews; 0.9 mm (YZP)
  • APPLICATIONS
    • Fingerprint Module Protection

View All Features in Datasheet

Description

The TPS22946 is an ultra-low power load switch that provides protection to systems and loads in high-current conditions. The device contains a 300-m current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22946 includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.

When the switch current reaches the maximum limit, the TPS22946 operates in a constant-current mode to prohibit excessive currents from causing damage. The current limit can be selected using the CL input: a high CL input sets the current limit to 155 mA, a low CL input sets the current limit to 70 mA, and a floating CL input sets the current limit to 30 mA.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSamples
TPS22946YZPRACTIVE-40 to 850.55 | 1kuDSBGA (YZP) | 6 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 10:16 AM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 14 WeeksTPS22946YZPR
WorldwideDigiKey >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
TPS22946YZPR 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 TPS22946 Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS22941 Low-Input Voltage 40mA Current Limited Load Switch with Shut-Off and Auto-Restart Features POWER MUXES AND CURRENT LIMITED SWITCHES-CURRENT LIMITED SWITCHES TI customers also evaluated this product.
TPS22944 Low-Input Voltage 100mA Current Limited Load Switch POWER MUXES AND CURRENT LIMITED SWITCHES-CURRENT LIMITED SWITCHES TI customers also evaluated this product.
TPS61093 Low Input, 20V/1.1A Step-Up DC/DC Converter with Integrated Power Diode and Input/Output Isolation DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.

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