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TPS51123 Status: ACTIVE

Dual-Synchronous, Step-Down Controller w/ Out-of-Audio Operation, 100-mA LDOs for Notebook Sys. Pwr


      
         
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 TPS51120 TPS51123TPS51124 TPS51125 TPS51220 TPS53124 TPS53125 TPS53126 
TopologyBuck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck, D-CAP™Mode  Buck, D-CAP2™ Mode  Buck, D-CAP2™ Mode  
Vin(Min)(V)4.5  5.5  3  5.5  4.5  4.5  4.5  4.5  
Vin(Max)(V)28  28  28  28  28  24  24  24  
Vout(Min)(V)1.05  2.0  0.76  2  1  0.76  0.76  0.76  
Vout(Max)(V)5.5  5.5  5.5  5.5  12  5.5  5.5  5.5  
Regulated Outputs(#)2  2  2  2  2  2  2  2  
Iout(Max)(A)20  20  15  20  20  15  15  15  
Switching Frequency(Max)(kHz)580  460  420  460  1000  380  350  350, 700  
Iq(Typ)(mA)0.75  0.55  0.35  0.55  1.3  0.45  0.45  0.45  
Pin/Package32QFN  24VQFN  24VQFN  24VQFN  32QFN  24VQFN, 28TSSOP  24TSSOP  24TSSOP, 24VQFN  
Thermal ShutdownYes  Yes  Yes  Yes  Yes  Yes  Yes  Yes  
Vout2(Min)(V)1.05  2.0  0.76  2  1  0.76  0.76  0.76  
Vout2(Max)(V)5.5  5.5  5.5  5.5  12  5.5  5.5  5.5  
Iout2(A)20  20  20  20  20  15  15  15  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Duty Cycle(Max)(%)88  93  88  93  99  89  89  89  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS51116: DDR1, DDR2, DDR3 Switcher and LDO
  • TPS51218: 3V to 28V Input. 20A Synchronous Step Down Controller with DCAP™ Mode for Notebook Power Supply
  • TPS51220A: Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller
  • UC2846: Current Mode PWM Controller
  • TPS70345: Dual-Output Low-Dropout (LDO) Voltage Regulators
  • TPS61202: 0.3V Input Voltage Boost Converter with 1.3A Switches and 'Down Mode' in a 3x3 QFN

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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)
  • 24-Pin QFN (RGE) Package
  • APPLICATIONS
    • Notebook Computers
    • I/O Supplies
    • System Power Supplies

Out-of-Audio, D-CAP are trademarks of Texas Instruments.

Description

The TPS51123 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 TPS51123 supports high efficiency, fast transient responses 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 TPS51123 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

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
TPS51123RGERACTIVE-40 to 852.15 | 1kuVQFN (RGE) | 24 View 3000 | LARGE T&RPurchase Samples
TPS51123RGETACTIVE-40 to 852.40 | 1kuVQFN (RGE) | 24 View 250 | SMALL T&R

* 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 10:13 AM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 16 WeeksTPS51123RGER
None Reported
View Distributors
TI Lead Time*: 16 WeeksTPS51123RGET
AmericasAvnet 250
Newark 183
AsiaWPI 760
EuropeArrow Northern Europe 250
Avnet-SILICA 250
Spoerle 250
WorldwideMouser Electronics 875
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
TPS51123RGER RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51123RGET 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 TPS51123 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
8A, 8V to 25V Input, 5V and 3.3V Output Dual Synchronous Controller Evaluation ModuleTPS51123EVM-399Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS51116 DDR1, DDR2, DDR3 Switcher and LDO NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51218 3V to 28V Input. 20A Synchronous Step Down Controller with DCAP™ Mode for Notebook Power Supply NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51220A Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51222 Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Power Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51220 Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51221 Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Power Dual Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51020 Dual, DDR selectable, Synchronous buck controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51620 Dual Phase D-CAP+™Mode Step Down Controller for IMVP6+ CPU/GPU Vcore NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51427 Dual D-CAP™Mode Synchronous Step Down Controller for Notebook Power Rails NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51125 Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
UC2846 Current Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TPS70345 Dual-Output Low-Dropout (LDO) Voltage Regulators LINEAR REGULATORS-DUAL CHANNEL LDO TI customers also evaluated this product.
TPS61202 0.3V Input Voltage Boost Converter with 1.3A Switches and 'Down Mode' in a 3x3 QFN DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
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