TPS61042 Status: ACTIVE

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

      
         
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Datasheet

Download - PDF Icon
  • Constant Current LED Driver (Rev. C) (tps61042.pdf, 741 KB)
    27 Mar 2007 Download

 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)No  No  28  17  No  
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  
 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
  • TPS61040: 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS61043: TPS61043: Constant Current LED Driver
  • TPS62200: Adjustable, 300-mA, 95% Efficient Step-Down Converter in SOT-23
  • TPS40200: Wide Input Nonsynchronous Buck DC/DC Controller
  • TPS65120: 5V/20mA(I/O), 4-CH high-accuracy Multi-Converter w/ 3.3V LDO for LCD Bias, 16 QFN

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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 1.00 | 1kuSON (DRB) | 8 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase Samples
TPS61042DRBTG4ACTIVE 1.00 | 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 8:01 AM GMT, 10 Oct 2008As of 8:01 AM GMT, 10 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 2 Feb 6 Weeks AmericasArrow >1k
  DigiKey >1k
  Mouser Electronics >1k
  Newark >1k
  Rochester Electronics >1k
  AsiaWPI >1k
TPS61042DRBRG4As of 8:01 AM GMT, 10 Oct 2008As of 8:01 AM GMT, 10 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 2 Feb 6 Weeks AmericasRochester Electronics >1k
  AsiaWPI >1k
  EuropeFarnell >1k
TPS61042DRBTAs of 8:01 AM GMT, 10 Oct 2008As of 8:01 AM GMT, 10 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 22 Dec 6 Weeks AmericasMouser Electronics 496
  Rochester Electronics >1k
  EuropeSpoerle 250
TPS61042DRBTG4As of 8:01 AM GMT, 10 Oct 2008As of 8:01 AM GMT, 10 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 22 Dec 6 Weeks None Reported
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* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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

Datasheets

  • Constant Current LED Driver (Rev. C) (tps61042.pdf, 741 KB)
    27 Mar 2007 Download

Application Notes

  • Optimizing Transient Response of Internally Compensated DC-DC Converters (slva289.htm, 8 KB)
    28 Jan 2008 Abstract
  • QFN/SON PCB Attachment Application Report (Rev. A) (slua271a.htm, 8 KB)
    25 Jul 2007 Abstract
  • White Light LED Driver With Gradual Dimming (Rev. A) (slva122a.htm, 8 KB)
    10 Jan 2007 Abstract
  • Operating the TPS61042 from Two Li-Ion and Input Voltages Higher than 6V (slva244.htm, 8 KB)
    17 Jul 2006 Abstract
  • Performing Accurate PFM Mode Efficiency Measurements (slva236.htm, 8 KB)
    18 Apr 2006 Abstract
  • Using the TPS61040 in High Voltage Applications (slva209.htm, 8 KB)
    16 May 2005 Abstract
  • TPS61042 White Light LED Driver Boost Converter (Rev. A) (slva125a.htm, 8 KB)
    09 Jun 2003 Abstract
  • TPS61040 Inverter Design (Rev. A) (slva008a.htm, 8 KB)
    09 Jun 2003 Abstract
  • Single Cell TPS61041 LED Driver (slva136.htm, 8 KB)
    09 Jun 2003 Abstract
  • TPS61042 Dual Li-Ion and Higher Input Voltages (slva131.htm, 8 KB)
    13 Mar 2003 Abstract
  • High Voltage Power Supply Using the TPS61040 (slua272.htm, 8 KB)
    09 Jul 2002 Abstract

View Application Notes for White LED Drivers

User Guides

  • TPS61042EVM-226 White Light LED Bias Supply EVM (sllu053.htm, 8 KB)
    13 Sep 2002 Abstract

White Papers

  • White LED Power Supply Design Techniques  (slva130.htm, 9 KB)
    18 Feb 2003  Abstract

Tools & Software

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

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