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clear gifTPS51125, Status:ACTIVE
Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs
 
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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-Synchronous, Step-Down Controller With OOA Operation and 100-mA LDOs (Rev. B) (tps51125.pdf, 928 KB)
04 Apr 2008 Download

TPS51020 TPS51120 TPS51124 TPS51125TPS51220 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
  • Wide Input Voltage Range: 5.5 V to 28 V
  • Output Voltage Range: 2 V to 5.5 V
  • Built-in 100-mA 5-V/3.3-V LDO with Switches
  • Built-in 1% 2-V Reference Output
  • With/Without Out-of-Audio™ Mode Selectable Light Load and PWM only Operation
  • Internal 1.6-ms Voltage Servo Softstart
  • Adaptive On-Time Control Architecture with Four Selectable Frequency Setting
  • 4500 ppm/°C RDS(on) Current Sensing
  • Built-In Output Discharge
  • Power Good Output
  • Built-in OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • QFN24 (RGE)
  • APPLICATIONS
    • Notebook Computers
    • I/O Supplies
    • System Power Supplies

Out-of-Audio, D-CAP Is a trademark of Texas Instruments
Back to TopDescription

The TPS51125 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter's efficiency. The TPS51125 supports high efficiency, fast transient response and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51125 is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperaturerange.
Analog eLab(TM) Design Center

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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
TPS51125RGERACTIVE-40 to 852.70 | 100uVQFN (RGE) | 24 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51125RGERG4ACTIVE-40 to 852.70 | 100uVQFN (RGE) | 24 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51125RGETACTIVE-40 to 853.00 | 100uVQFN (RGE) | 24 View 250 | SMALL T&R Download CAD Format for this SymbolRequest Free Samples
TPS51125RGETG4ACTIVE-40 to 853.00 | 100uVQFN (RGE) | 24 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
TPS51125RGERAs of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 3 Sep 16 Weeks None Reported
View Distributors		  
TPS51125RGERG4As of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 3 Sep 16 Weeks None Reported
View Distributors		  
TPS51125RGETAs of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 250 | 20 May 6 Weeks AmericasDigiKey 83 Buy Now
 >10k | 1 Jul AsiaWPI 122 Buy Now
TPS51125RGETG4As of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 250 | 20 May 6 Weeks None Reported
View Distributors		  
 >10k | 1 Jul    
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
TPS51125RGER RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51125RGERG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51125RGET RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51125RGETG4 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-Synchronous, Step-Down Controller With OOA Operation and 100-mA LDOs (Rev. B) (tps51125.pdf, 928 KB)
04 Apr 2008 Download
Back to TopApplication Notes
View Application Notes for DC/DC Controllers (External Switch)
Back to TopUser Guides
Using the TPS51125 (sluu311.pdf, 812 KB)
25 Mar 2008 Download
View User Guides for DC/DC Controllers (External Switch)

Tools & Software
Back to Top Name Part # Company Tool / Software Type
TPS51125 Evaluation ModuleTPS51125EVMTexas InstrumentsDevelopment Boards/EVMs

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