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TPS51125 Status: ACTIVE

Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs

      
         
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 TPS51020 TPS51120 TPS51123 TPS51124 TPS51125TPS5120 TPS51220 TPS51221 TPS51222 TPS5124 
TopologyBuck  Buck  Buck,D-CAP(TM)  Buck  Buck  Buck  Buck  Buck  Buck  Buck  
Vin(Min)(V)4.5  4.5  5.5  3  5.5  4.5  4.5  4.5  4.5  4.5  
Vin(Max)(V)28  28  28  28  28  28  28  28  32  15  
Vout(Min)(V)0.9  1.05  2.0  0.76  2  0.9  1  1  1  0.9  
Vout(Max)(V)24  5.5  5.5  5.5  5.5  26  12  12  12  12  
Regulated Outputs(#)2  2  2  2  2  2  2  2  2  2  
Iout(Max)(A)20  20  20  15  20  20  20  20  20  20  
Switching Frequency(Max)(kHz)450  580  460  420  325  500  1000  1000  1000  500  
Iq(Typ)(mA)1.4  0.75   0.35  0.55  1.1  1.3  1.3   1.1  
Pin/Package30TSSOP  32QFN  24VQFN  24VQFN  24VQFN  30TSSOP  32QFN  32QFN  32QFN  30TSSOP  
Thermal Shutdown Yes  Yes  Yes  Yes  No  Yes  Yes  Yes  No  
Vout2(Min)(V)0.9  1.05  2.0  0.76  2  0.9  1  1  1  0.9  
Vout2(Max)(V)24  5.5  5.5  5.5  5.5  26  12  12  12  12  
Iout2(A)20  20  20  20  20  15  20  20  20  20  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Duty Cycle(Max)(%)88  100  100  90  100  80  99  99  99  80  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS51610: Single Phase, D-CAP+(tm) Synchronous Buck Controller
  • TPS51117: Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency
  • TPS51124: Dual, Synchronous Step Down Controller for Low Voltage System Power
  • TPS61041: 28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS5431: 5.5-V to 23-V, 3-A Step-Down SWIFT™ Converter
  • UCC27324: Dual 4 A Peak High Speed Low-Side Power MOSFET Drivers

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Product Information

Features

  • 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 are trademarks of Texas Instruments.

Description

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 temperature range.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS51125RGERACTIVE-40 to 852.15 | 1kuVQFN (RGE) | 24 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51125RGERG4ACTIVE-40 to 852.15 | 1kuVQFN (RGE) | 24 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51125RGETACTIVE-40 to 852.40 | 1kuVQFN (RGE) | 24 View 250 | SMALL T&R Download CAD Format for this Symbol
TPS51125RGETG4ACTIVE-40 to 852.40 | 1kuVQFN (RGE) | 24 View 250 | SMALL 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

  TI Inventory Status Reported Distributor Inventory
TPS51125RGERAs of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
TPS51125RGERG4As of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
TPS51125RGETAs of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 14 Weeks AmericasDigiKey 467
 AsiaWPI 122
TPS51125RGETG4As of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 14 Weeks AmericasDigiKey  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
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

Most useful technical documents for TPS51125 Help

Datasheet

Application Notes

View Application Notes for DC/DC Controllers (External Switch)

User Guides

View User Guides for DC/DC Controllers (External Switch)

Tools & Software

NamePart # Company Tool / Software Type
TPS51125 Evaluation ModuleTPS51125EVMTexas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS51610 Single Phase, D-CAP+(tm) Synchronous Buck Controller   TI customers also evaluated this product.
TPS51117 Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency   TI customers also evaluated this product.
TPS51124 Dual, Synchronous Step Down Controller for Low Voltage System Power   TI customers also evaluated this product.
TPS51116 DDR1, DDR2, DDR3 Switcher and LDO   TI customers also evaluated this product.
TPS51220 Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller   TI customers also evaluated this product.
TPS51120 Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System Power   TI customers also evaluated this product.
TPS61041 28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
TPS5431 5.5-V to 23-V, 3-A Step-Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
UCC27324 Dual 4 A Peak High Speed Low-Side Power MOSFET Drivers AC/DC AND DC/DC POWER SUPPLIES-MOSFET DRIVERS TI customers also evaluated this product.
UCC27424 Dual 4A MOSFET Driver AC/DC AND DC/DC POWER SUPPLIES-MOSFET DRIVERS TI customers also evaluated this product.
TPS61160 White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm Package LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
UCC2818 BiCMOS Power Factor Preregulator AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
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