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TPS61121 Status: ACTIVE

3.3-V 95% Efficient Boost Converter with 1.5-V 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications


      
         
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 TPS61120 TPS61121TPS61122 
Iout(Max)(A)0.5  0.5  0.5  
Iout2(A)0.2  0.2  0.2  
Iq(Typ)(mA)0.04  0.04  0.04  
Vin(Min)(V)1.8  1.8  1.8  
Vin(Max)(V)5.5  5.5  5.5  
Vout(Min)(V)2.5  3.3  3.6  
Vout(Max)(V)5.5  3.3  3.6  
Preset Vout(V) 3.3  3.6  
Vout2(Min)(V) 1.5  3.3  
Vout2(Max)(V) 1.5  3.3  
Vout2 Adj(Min)(V)0.9    
Vout2 Adj(Max)(V)5.5    
Switching Frequency(Max)(kHz)600  600  600  
Regulated Outputs(#)2  2  2  
Duty Cycle(Max)(%)100  100  100  
Switch Current Limit(Typ)(A)1.6  1.6  1.6  
Operating Temp Range(Celsius)-40 to 85  -40 to 85  -40 to 85  
Pin/Package16QFN, 16TSSOP  16QFN, 16TSSOP  16TSSOP  
TopologyBoost  Boost  Boost  
 SamplesSamplesSamples
 InventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS61131: 3.3V, 90% Efficient SEPIC Converter with 3.3V, 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications
  • TPS61132: 3.3V, 90% Efficient SEPIC Converter with 1.5V, 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications
  • TPS61107: Dual Output Converter (Boost DC/DC + LDO) for Single/Dual-Cell Applications
  • TPS61141: Dual, 2x 27V, 700mA Switch, 1.2MHz Boost Converter with Single Inductor White LED and OLED Driver
  • TPS61140: Dual, 2x 27V, 700mA Switch, 1.2MHz Boost Converter with Single Inductor White LED and OLED Driver

More Related Products

Product Information

Features

  • Synchronous, 95% Efficient, Boost Converter With 500-mA Output Current From 1.8-V Input
  • Integrated 200-mA Reverse Voltage Protected LDO for DC/DC Output Voltage Post Regulation or Second Output Voltage
  • 40-µA (Typical) Total Device Quiescent Current
  • Input Voltage Range: 1.8-V to 5.5-V
  • Fixed and Adjustable Output Voltage Options up to 5.5-V
  • Power Save Mode for Improved Efficiency at Low Output Power
  • Low Battery Comparator
  • Power Good Output
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 4mm x 4mm QFN-16 or in a TSSOP-16 Package

Description

The TPS6112x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer or a two up to 4 cells Alkaline, NiCd or NiMH batteries. The devices can generate two stable output voltages that are either adjusted by an external resistor divider or fixed internally on the chip. It also provides a simple solution for generating 3.3 V out of a one-cell Li-Ion or Li-Polymer battery at a maximum output current of at least 200 mA with supply voltages down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the boost switch is limited to a value of 1600 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and in effect lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. A power good output at the boost stage simplifies control of any connected circuits like cascaded power supply stages or microprocessors.

The built-in LDO can be used for a second output voltage derived either from the boost output or directly from the battery. The LDO can be enabled separately i.e., using the power good of the boost stage. The device is packaged in a 16-pin QFN package measuring 4 mm x 4 mm (RSA) or in a 16-pin TSSOP (PW) package.

Device Uses

  • All Single Cell Li or Dual Cell Battery or USB Powered Products as MP-3 Player, PDAs, and Other Portable Equipment
  • Dual Input or Dual Output Mode
  • Simple Li-Ion to 3.3-V Conversion

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
TPS61121PWACTIVE-40 to 851.95 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TPS61121PWG4ACTIVE-40 to 851.95 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TPS61121PWRACTIVE-40 to 851.95 | 1kuTSSOP (PW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TPS61121PWRG4ACTIVE-40 to 851.95 | 1kuTSSOP (PW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TPS61121RSARACTIVE-40 to 851.95 | 1kuQFN (RSA) | 16 View 3000 | LARGE T&R Download CAD Format for this Symbol 
TPS61121RSARG4ACTIVE-40 to 851.95 | 1kuQFN (RSA) | 16 View 3000 | LARGE T&R Download CAD Format for this Symbol 

* 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 10:06 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 1 WeekTPS61121PW
AmericasRochester Electronics >1k
AsiaWPI 50
WorldwideDigiKey 430
TI Lead Time*: 1 WeekTPS61121PWG4
EuropeEBV Elektronik 45
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS61121PWR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS61121PWRG4
WorldwideDigiKey  Available
TI Lead Time*: 1 WeekTPS61121RSAR
WorldwideDigiKey 632
TI Lead Time*: 1 WeekTPS61121RSARG4
WorldwideDigiKey  Available
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
TPS61121PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS61121PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS61121PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS61121PWRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TPS61121RSAR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS61121RSARG4 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 TPS61121 Help

Datasheet

Application Notes

User Guides

Tools & Software

NamePart # Company Tool / Software Type
TPS61120 Evaluation ModuleTPS61120EVM-205Texas InstrumentsDevelopment Boards/EVMs
TPS61121 Evaluation ModuleTPS61121EVM-205Texas InstrumentsDevelopment Boards/EVMs
TPS61122 Evaluation ModuleTPS61122EVM-205Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS61131 3.3V, 90% Efficient SEPIC Converter with 3.3V, 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
TPS61132 3.3V, 90% Efficient SEPIC Converter with 1.5V, 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
TPS61107 Dual Output Converter (Boost DC/DC + LDO) for Single/Dual-Cell Applications DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
TPS61122 3.6-V 95% Efficient Boost Converter with 3.3-V 200-mA LDO for 1-Cell LiIon or Dual-Cell Applications DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
TPS61097-33 0.9Vin, 3.3Vout Boost Converter with Bypass Switch - 5nA Shutdown Current, SOT-23 DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
TPS61141 Dual, 2x 27V, 700mA Switch, 1.2MHz Boost Converter with Single Inductor White LED and OLED Driver LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
TPS61140 Dual, 2x 27V, 700mA Switch, 1.2MHz Boost Converter with Single Inductor White LED and OLED Driver LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.

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