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TPS61042 Status: ACTIVE

30-V, 500-mA Switch Boost Converter in QFN-8 for White LED Applications

      
         
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Datasheet

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 TPS61040 TPS61041 TPS61042TPS61043 TPS61045 
TopologyBoost  Boost  Boost  Boost  Boost  
TypeInductive  Inductive  Inductive  Inductive  Inductive  
Vin(Min)(V)1.8  1.8  1.8  1.8  1.8  
Vin(Max)(V)6  6  6  6  6  
Switch Current Limit(Typ)(A)0.4  0.25  0.5  0.5  0.45  
Output Voltage(Max)(V)28  28  28  16.9  28  
Switching Frequency(Max)(kHz)1000  1000  1000  1000  1000  
LED(#)6  4  6  4  1 OLED or 6  
LED ConfigurationSeries  Series  Series  Series  Series  
Over-Voltage Protection(Min)(V)  28  17   
Peak Efficiency(%)86  85  85  85   
Iq(Typ)(mA)0.028  0.028  0.038  0.038  0.04  
Operating Temp Range(Celsius)-40 to 85  -40 to 85  -40 to 85  -40 to 85  -40 to 85  
Pin/Package5SOT-23, 6SON  5SOT-23, 6SON  8SON  8SON  8SON  
Iout(Max)(A)0.09  0.05  0.03  0.03  0.02  
Regulated Outputs(#)1  1  1  1  1  
 SamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS61041: 28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS61045: 28-V, 85% Efficient Boost Converter in QFN-8, Digitally Adjustable
  • TPS61040: 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS5420: 5.5V to 36V, 2A, 500kHz Step Down SWIFT™ Converter
  • BQ24085: 750mA SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC with Thermal Regulation
  • TPS54383: Dual 3A Non-Synchronous Buck Converter with Integrated High Side MOSFET, 300 kHz

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Product Information

Features

  • Current Source With Overvoltage Protection
  • Input Voltage Range . . 1.8 V to 6 V
  • Internal 30 V Switch
  • Up to 85% Efficiency
  • Precise Brightness Control Using PWM Signal or Analog Signal
  • Switching Frequency . . Up to 1 MHz
  • Internal Power MOSFET Switch . . 500 mA
  • Operates With Small Output Capacitors Down to 100 nF
  • Disconnects LEDs During Shutdown
  • No Load Quiescent Current . . 38 µA Typ
  • Shutdown Current . . 0.1 µA Typ
  • Available in a Small 3 mm × 3 mm QFN Package
  • APPLICATIONS
    • White LED Supply for Backlight/Sidelight Displays
      • PDA, Pocket PC, Smart Phones
      • Handheld Devices
      • Cellular Phones

Description

The TPS61042 is a high frequency boost converter with constant current output that drives white LEDs or similar. The LED current is set with the external sense resistor (RS) and is directly regulated by the feedback pin (FB) that regulates the voltage across the sense resistor RS to 252 mV (typ). To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100 Hz to 50 kHz to the control pin (CTRL). To allow higher flexibility, the device can be configured where the brightness can be controlled by an analog signal as well. To avoid possible leakage currents through the LEDs during shutdown, the control pin (CTRL) disables the device and disconnects the LEDs from ground. For maximum safety during operation, the output has integrated overvoltage protection that prevents damage to the device in case of a high impedance output (e.g. faulty LED).

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS61042DRBRACTIVE-40 to 850.95 | 1kuSON (DRB) | 8 View 3000 | LARGE T&R Download CAD Format for this Symbol
TPS61042DRBRG4ACTIVE-40 to 850.95 | 1kuSON (DRB) | 8 View 3000 | LARGE T&R Download CAD Format for this Symbol
TPS61042DRBTACTIVE 1.05 | 1kuSON (DRB) | 8 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase Samples
TPS61042DRBTG4ACTIVE 1.05 | 1kuSON (DRB) | 8 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase 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

  TI Inventory Status Reported Distributor Inventory
TPS61042DRBRAs of 8:38 AM GMT, 03 Jul 2009As of 8:38 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasArrow >1k
 DigiKey >1k
 Mouser Electronics >1k
 Newark >1k
 Rochester Electronics >1k
 AsiaWPI >1k
 EuropeFarnell 131
TPS61042DRBRG4As of 8:38 AM GMT, 03 Jul 2009As of 8:38 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 6 Weeks AmericasDigiKey  Available
 Rochester Electronics >1k
 AsiaWPI >1k
 EuropeFarnell >1k
TPS61042DRBTAs of 8:38 AM GMT, 03 Jul 2009As of 8:38 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasArrow 250
 DigiKey  Available
 Mouser Electronics 73
 Rochester Electronics >1k
 EuropeCompel 156
TPS61042DRBTG4As of 8:38 AM GMT, 03 Jul 2009As of 8:38 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
 EuropeEBV Elektronik 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
TPS61042DRBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61042DRBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61042DRBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61042DRBTG4 RoHS Compliant Green (RoHS & no Sb/Br) 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 TPS61042 Help

Datasheet

Application Notes

View Application Notes for White LED Drivers

User Guides

White Papers

Tools & Software

NamePart # Company Tool / Software Type
TPS61042 EVM for Constant-Current White LED Supply w/ PWM Brightness CtrlTPS61042EVM-226Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
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TPS61045 28-V, 85% Efficient Boost Converter in QFN-8, Digitally Adjustable   TI customers also evaluated this product.
TPS61040 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications   TI customers also evaluated this product.
TPS61043 TPS61043: Constant Current LED Driver   TI customers also evaluated this product.
TPS61165 High Brightness White LED Driver in 2mm x 2mm QFN Package   TI customers also evaluated this product.
TPS5420 5.5V to 36V, 2A, 500kHz Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
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