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TPS51120 Status: ACTIVE

Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System Power

      
         
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Datasheet

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 TPS51020 TPS51120TPS51123 TPS51124 TPS51125 TPS5120 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

  • TPS51124: Dual, Synchronous Step Down Controller for Low Voltage System Power
  • TPS51116: DDR1, DDR2, DDR3 Switcher and LDO
  • TPS51117: Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency
  • TPS23750: IEEE 802.3af PD Controller with Integrated DC/DC
  • TPS63000: 96% Buck-Boost Converter with 1.8A Current Switches in 3x3 QFN
  • BQ24032A: Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2V

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Product Information

Features

  • 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.

Description

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.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS51120RHBRACTIVE-40 to 852.20 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51120RHBRG4ACTIVE-40 to 852.20 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51120RHBTACTIVE-40 to 852.45 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R Download CAD Format for this Symbol
TPS51120RHBTG4ACTIVE-40 to 852.45 | 1kuQFN (RHB) | 32 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
TPS51120RHBRAs of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 14 Weeks AsiaWPI >1k
TPS51120RHBRG4As of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 14 WeeksNone Reported
View Distributors		   
TPS51120RHBTAs of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasArrow 250
 Mouser Electronics 500
 AsiaWPI 404
TPS51120RHBTG4As of 8:42 AM GMT, 03 Jul 2009As of 8:42 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks EuropeFarnell 20
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
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

Most useful technical documents for TPS51120 Help

Datasheet

User Guides

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

Solution Guides

Tools & Software

NamePart # Company Tool / Software Type
TPS51120 Evaluation ModuleTPS51120EVM-001Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
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.
TPS51117 Wide Vin Synchronous Buck Controller Optimized for Light Load Efficiency   TI customers also evaluated this product.
TPS51125 Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs   TI customers also evaluated this product.
TPS51020 Dual, DDR selectable, Synchronous buck controller   TI customers also evaluated this product.
TPS23750 IEEE 802.3af PD Controller with Integrated DC/DC POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES TI customers also evaluated this product.
TPS63000 96% Buck-Boost Converter with 1.8A Current Switches in 3x3 QFN DC/DC CONVERTERS (INTEGRATED SWITCH)-BUCK-BOOST REGULATORS TI customers also evaluated this product.
BQ24032A Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2V BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
TPS61040 28-V, 400-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.
TPS54386 Dual 3A Non-Synchronous Buck Converter with Integrated High Side MOSFET, 600 kHz DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS63001 96% Buck-Boost Converter with 1.7A Current Switches, 3.3V fixed Output voltage in 3x3 QFN DC/DC CONVERTERS (INTEGRATED SWITCH)-BUCK-BOOST REGULATORS TI customers also evaluated this product.
TPS3823-33 Supply Voltage Supervisor w/Watchdog input and manual reset POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS) TI customers also evaluated this product.
TPS54612 3V to 6V, 6A Synchronous Step Down SWIFT™ Converter with 1.2V Output DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
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