clear gifTPS51120, Status:ACTIVE
Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System Power
 
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Product Features and DescriptionFeaturesRequest Free SamplesSamplesTechnical Documents: app notes, user guides, models, and product bulletinsTechnical Documents
Quality: Product Contents, MTBF/FIT Rate and Moisture SensitivityQuality & Pb-Free DataPrice and Packaging InformationPricing/PackagingDownload Application NotesApplication Notes
related productsRelated ProductsInventory, Leadtime, and AvailabilityInventoryModels: BSDL, IBIS, or SPICESimulation Models
Tools & Software: EVMs, CCStudio, and developerTools & Software Download CAD Design ToolsSymbols/FootprintsAccess Reference DesignsReference Designs

 Datasheet
Download Datasheet
Dual Current Mode, Synchronous Step-Down Controller (Rev. B) (tps51120.pdf, 940 KB)
06 Feb 2007 Download

TPS51020 TPS51120TPS51124 TPS51125 TPS51220 TPS51221 TPS5124 
TopologyBuck  Buck  Buck  Buck  Buck  Buck  Buck  
Vin(Min)(V)4.5  4.5  3  5.5  4.5  4.5  4.5  
Vin(Max)(V)28  28  28  28  28  28  15  
Vout(Min)(V)0.9  1.05  0.76  2  1  1  0.9  
Vout(Max)(V)24  5.5  5.5  5.5  12  12  12  
Regulated Outputs(#)2  2  2  2  2  2  2  
Iout(Max)(A)20  20  15  20  20  20  20  
Switching Frequency(Max)(kHz)450  580  420  325  1000  1000  500  
Iq(Typ)(mA)1.4  0.75  0.35  0.55  1.3  1.3  1.1  
Pin/Package30TSSOP  32QFN  24VQFN  24VQFN  32QFN  32QFN  30TSSOP  
Vout2(Min)(V)0.9  1.05  0.76  2  1  1  0.9  
Vout2(Max)(V)24  5.5  5.5  5.5  12  12  12  
Iout2(A)20  20  20  20  20  20  20  
 SamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventory

Product Information
Back to TopFeatures
  • 3.3-V and 5-V 100-mA Bootstrapped Standby Regulators with Independent Enables
  • Selectable D-CAP® Mode Enables Fast Transient Response Less than 100 ns
  • Selectable Low Ripple Current Mode
  • Less than 1% Internal Reference Accuracy
  • Selectable PWM-only/Auto-skip Modes
  • Low-side RDS(on) Loss-less Current Sensing
  • RSENSE Accurate Current Sense Option
  • Internal Soft-start and Integrated VOUT Discharge Transistors
  • Integrated 2-V Reference
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Power Good for Each Channel with Delay Timer
  • Fault Disable Mode
  • Supply Input Voltage Range: 4.5 V to 28 V
  • APPLICATIONS
    • Notebook Computers System Bus and I/O

D-CAP is a registered trademark of Texas Instruments.

Back to TopDescription

The TPS51120 is a highly sophisticated dual current mode synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP™ mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.

The TPS51120 32-pin QFN package is specified from -40°C to 85°C ambient temperature.

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Pricing/Packaging/CAD Design Tools/Samples
Back to TopPricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Budget Price
($US) | QTY
Industry Standard
(TI Pkg)
| Pins
Top Side MarkingStandard Pack Quantity | Package CarrierSymbolsSamples
TPS51120RHBRACTIVE-40 to 853.15 | 100uQFN (RHB) | 32 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51120RHBRG4ACTIVE-40 to 853.15 | 100uQFN (RHB) | 32 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51120RHBTACTIVE-40 to 853.45 | 100uQFN (RHB) | 32 View 250 | SMALL T&R Download CAD Format for this SymbolRequest Free Samples
TPS51120RHBTG4ACTIVE-40 to 853.45 | 100uQFN (RHB) | 32 View 250 | SMALL T&R Download CAD Format for this SymbolRequest Free 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
Back to TopTI Inventory StatusReported Distributor Inventory
TPS51120RHBRAs of 7:57 AM GMT, 9 May 2008As of 7:57 AM GMT, 9 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 9 Jul 6 Weeks AsiaWPI >1k Buy Now
TPS51120RHBRG4As of 7:57 AM GMT, 9 May 2008As of 7:57 AM GMT, 9 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 9 Jul 6 Weeks None Reported
View Distributors
  
TPS51120RHBTAs of 7:57 AM GMT, 9 May 2008As of 7:57 AM GMT, 9 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 393 | 12 May 6 Weeks AmericasDigiKey 816 Buy Now
 4402 | 16 Jun Mouser Electronics 744 Buy Now
 >10k | 23 Jun AsiaWPI 404 Buy Now
TPS51120RHBTG4As of 7:57 AM GMT, 9 May 2008As of 7:57 AM GMT, 9 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 393 | 12 May 6 Weeks None Reported
View Distributors
  
 4402 | 16 Jun    
 >10k | 23 Jun    
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
Back to TopProduct ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
TPS51120RHBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51120RHBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51120RHBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51120RHBTG4 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
Back to TopDatasheets
Dual Current Mode, Synchronous Step-Down Controller (Rev. B) (tps51120.pdf, 940 KB)
06 Feb 2007 Download
Back to TopApplication Notes
View Application Notes for DC/DC Controllers (External Switch)
Back to TopUser Guides
View User Guides for DC/DC Controllers (External Switch)
Back to TopMore Literature
Notebook Computer Solutions Guide (slyy016.pdf, 956 KB)
01 Aug 2006 Download

Tools & Software
Back to Top Name Part # Company Tool / Software Type
TPS51120 Evaluation ModuleTPS51120EVM-001Texas InstrumentsDevelopment Boards/EVMs

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