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TPS61043 Status: ACTIVE

TPS61043: Constant Current LED Driver

      
         
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Datasheet

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  • TPS61043: Constant Current LED Driver (Rev. A) (tps61043.pdf, 1071 KB)
    10 Dec 2003 Download

 TPS61040 TPS61041 TPS61042 TPS61043TPS61045 
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

  • TPS61040: 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS61041: 28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS61042: 30-V, 500-mA Switch Boost Converter in QFN-8 for White LED Applications
  • BQ24080: Low-Cost 1-cell Li-Ion Charger w/ 1-A FET, AC Present and Charge Enable in QFN-10
  • TPS51117: Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency
  • BQ24070: Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V

Product Information

Features

  • Current Source with 18 V Overvoltage Protection
  • Powers Up to 4 LEDs in Series
  • Input Voltage Range . . 1.8 V to 6.0 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 . . 400 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 Display Backlight/Sidelight in
      • PDA, Pocket PC, Smart Phones
      • Handheld Devices
      • Cellular Phones

Description

The TPS61043 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, as described in the application information section. 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 by limiting the output voltage to typically 18 V in case of a high impedance output (e.g. faulty LED). The TPS61042 device provides a solution for applications where higher LED currents or more than four LEDs in series need to be powered.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS61043DRBRACTIVE-40 to 850.80 | 1kuSON (DRB) | 8 View 3000 | LARGE T&R Download CAD Format for this Symbol
TPS61043DRBRG4ACTIVE-40 to 850.80 | 1kuSON (DRB) | 8 View 3000 | LARGE T&R Download CAD Format for this Symbol
TPS61043DRBTACTIVE-40 to 850.90 | 1kuSON (DRB) | 8 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase Samples
TPS61043DRBTG4ACTIVE-40 to 850.90 | 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
TPS61043DRBRAs of 8:01 AM GMT, 07 Oct 2008As of 8:01 AM GMT, 07 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 29 Dec 6 Weeks AmericasDigiKey >1k
  Mouser Electronics >1k
  Newark >1k
  Rochester Electronics >1k
  AsiaWPI >1k
  EuropeAvnet-SILICA 430
TPS61043DRBRG4As of 8:01 AM GMT, 07 Oct 2008As of 8:01 AM GMT, 07 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 29 Dec 6 Weeks AmericasRochester Electronics >1k
  AsiaWPI >1k
TPS61043DRBTAs of 8:01 AM GMT, 07 Oct 2008As of 8:01 AM GMT, 07 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 4750*  1 Weeks AmericasArrow 250
  Avnet 500
  Rochester Electronics >1k
  EuropeAvnet-SILICA 450
TPS61043DRBTG4As of 8:01 AM GMT, 07 Oct 2008As of 8:01 AM GMT, 07 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 4750*  1 Weeks AmericasMouser Electronics 180
View all Distributors  

* 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
TPS61043DRBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61043DRBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61043DRBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61043DRBTG4 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

  • TPS61043: Constant Current LED Driver (Rev. A) (tps61043.pdf, 1071 KB)
    10 Dec 2003 Download

Application Notes

  • Optimizing Transient Response of Internally Compensated DC-DC Converters (slva289.htm, 8 KB)
    28 Jan 2008 Abstract
  • Performing Accurate PFM Mode Efficiency Measurements (slva236.htm, 8 KB)
    18 Apr 2006 Abstract

View Application Notes for White LED Drivers

 Alternative Products - Are similar to TPS61043
Customers Who Evaluated This Product Also Evaluated...
Part #Name Comments
TPS6104028-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED ApplicationsTI customers also evaluated this product.
TPS6104128-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED ApplicationsTI customers also evaluated this product.
TPS6104230-V, 500-mA Switch Boost Converter in QFN-8 for White LED ApplicationsTI customers also evaluated this product.
 Complementary Products - Can be used with TPS61043
Customers Who Evaluated This Product Also Evaluated...
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TPS51117Wide Vin Synchronous Buck Controller Optimized for Light Load EfficiencyNON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH)TI customers also evaluated this product.
BQ24070Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4VBATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENTTI customers also evaluated this product.
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BQ24020bqTINY-II Dual Input USB/AC Adpater 1-Cell Li-Ion Charger w/Charge Enable & Temp Sense in QFN-10BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENTTI customers also evaluated this product.

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