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TPS70151 Status: ACTIVE

Dual-Output LDO Voltage Regulators


      
         
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 TPS70102 TPS70145 TPS70148 TPS70151TPS70158 
Iout(Max)(A)0.5  0.5  0.5  0.5  0.5  
Iout2(A)0.25  0.25  0.25  0.25  0.25  
Vdo(Typ)(mV)170  170  170  170  170  
Vin(Min)(V)2.7  3.47  3.47  3.47  3.47  
Vin(Max)(V)6  6  6  6  6  
Fixed Output Options(V) 3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2  3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2  3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2  3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2  
Accuracy(%)2  2  2  2  2  
Output Capacitor(uF)10  10  10  10  10  
Output Capacitor TypeTantalum  Ceramic  Ceramic  Ceramic  Ceramic  
Pin/Package20HTSSOP  20HTSSOP  20HTSSOP  20HTSSOP  20HTSSOP  
Vout2(Min)(V)1.22  1.2  1.5  1.8  2.5  
Vout2(Max)(V)5.5  1.2  1.5  1.8  2.5  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  
Vout(Min)(V)1.22  3.3  3.3  3.3  3.3  
Vout(Max)(V)5.5  3.3  3.3  3.3  3.3  
Regulated Outputs(#)2  2  2  2  2  
 SamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS767D301: Dual-Output Low-Dropout (LDO) Voltage Regulators
  • TPS70351: Dual-Output Low-Dropout (LDO) Voltage Regulators
  • TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter
  • TPS65053: 5-Channel Power Mgmt IC with two step down converters and 3 low-input voltage LDOs
  • TPS23753: IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller

Product Information

Features

  • Dual Output Voltages for Split-Supply Applications
  • Selectable Power-Up Sequencing for DSP Applications
  • Output Current Range of 500mA on Regulator 1 and 250mA on Regulator 2
  • Fast Transient Response
  • Voltage Options: 3.3V/2.5V, 3.3V/1.8V, 3.3V/1.5V, 3.3V/1.2V, and Dual Adjustable Outputs
  • Open Drain Power-On Reset with 120ms Delay
  • Open Drain Power Good for Regulator 1
  • Ultra Low 190µA (typ) Quiescent Current
  • 1µA Input Current During Standby
  • Low Noise: 65µVRMS Without Bypass Capacitor
  • Quick Output Capacitor Discharge Feature
  • Two Manual Reset Inputs
  • 2% Accuracy Over Load and Temperature
  • Undervoltage Lockout (UVLO) Feature
  • 20-Pin PowerPAD™ TSSOP Package
  • Thermal Shutdown Protection

PowerPAD, TMS320 are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.

Description

TPS701xx family devices are designed to provide a complete power management solution for the TMS320 DSP family, processor power, ASIC, FPGA, and digital applications where dual output voltage regulators are required. Easy programmability of the sequencing function makes the TPS701xx family ideal for any TMS320 DSP applications with power sequencing requirements. Differentiated features, such as accuracy, fast transient response, SVS supervisory circuit, manual reset inputs, and an enable function, provide a complete system solution.

The TPS701xx family of voltage regulators offer very low dropout voltage and dual outputs with power-up sequence control, which is designed primarily for DSP applications. These devices have extremely low noise output performance without using any added filter bypass capacitors and are designed to have a fast transient response and be stable with 10µF low ESR capacitors.

These devices have fixed 3.3V/2.5V, 3.3V/1.8V, 3.3V/1.5V, 3.3V/1.2V, and adjustable/adjustable voltage options. Regulator 1 can support up to 500mA, and regulator 2 can support up to 250mA. Separate voltage inputs allow the designer to configure the source power.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 170mV on regulator 1) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (maximum of 230µA over the full range of output current). This LDO family also features a sleep mode; applying a high signal to EN (enable) shuts down both regulators, reducing the input current to 1µA at TJ = +25°C.

The device is enabled when the EN pin is connected to a low-level input voltage. The output voltages of the two regulators are sensed at the VSENSE1 and VSENSE2 pins, respectively.

The input signal at the SEQ pin controls the power-up sequence of the two regulators. When the device is enabled and the SEQ terminal is pulled high or left open, VOUT2 turns on first and VOUT1 remains off until VOUT2 reaches approximately 83% of its regulated output voltage. At that time VOUT1 is turned on. If VOUT2 is pulled below 83% (for example, an overload condition), VOUT1 is turned off. Pulling the SEQ terminal low reverses the power-up order and VOUT1 is turned on first. The SEQ pin is connected to an internal pull-up current source.

For each regulator, there is an internal discharge transistor to discharge the output capacitor when the regulator is turned off (disabled).

The PG1 pin reports the voltage conditions at VOUT1, which can be used to implement an SVS for the circuitry supplied by regulator 1.

The TPS701xx features a RESET (SVS, POR, or Power-On Reset). RESET output initiates a reset in DSP systems and related digital applications in the event of an undervoltage condition. RESET indicates the status of VOUT2 and both manual reset pins (MR1 and MR2). When VOUT2 reaches 95% of its regulated voltage and MR1 and MR2 are in the logic high state, RESET goes to a high impedance state after a 120ms delay. RESET goes to the logic low state when the VOUT2 regulated output voltage is pulled below 95% (for example, an overload condition) of its regulated voltage. To monitor VOUT1, the PG1 output pin can be connected to MR1 or MR2.

The device has an undervoltage lockout (UVLO) circuit that prevents the internal regulators from turning on until VIN1 reaches 2.5V.

Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS70151PWPACTIVE-40 to 1251.65 | 1kuHTSSOP (PWP) | 20 View 70 | TUBE Download CAD Format for this Symbol
TPS70151PWPG4ACTIVE-40 to 1251.65 | 1kuHTSSOP (PWP) | 20 View 70 | TUBE Download CAD Format for this Symbol
TPS70151PWPRACTIVE-40 to 1251.50 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS70151PWPRG4ACTIVE-40 to 1251.50 | 1kuHTSSOP (PWP) | 20 View 2000 | LARGE T&R Download CAD Format for this SymbolPurchase 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

Reported Distributor Inventory as of 10:03 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksTPS70151PWP
AmericasAvnet 150
Newark 208
Rochester Electronics >1k
AsiaFarnell Asia 214
EuropeAvnet-SILICA 10
Compel 520
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksTPS70151PWPG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS70151PWPR
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS70151PWPRG4
WorldwideDigiKey  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
TPS70151PWP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS70151PWPG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS70151PWPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS70151PWPRG4 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 TPS70151 Help

Datasheet

Application Notes

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User Guides

More Literature

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Tools & Software

NamePart # Company Tool / Software Type
Dual output LDO, 250mA/500mA, evaluator with load simulatorTPS70151EVM-152Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS767D301 Dual-Output Low-Dropout (LDO) Voltage Regulators LINEAR REGULATORS-DUAL CHANNEL LDO TI customers also evaluated this product.
TPS70351 Dual-Output Low-Dropout (LDO) Voltage Regulators LINEAR REGULATORS-DUAL CHANNEL LDO TI customers also evaluated this product.
TPS5430 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS65053 5-Channel Power Mgmt IC with two step down converters and 3 low-input voltage LDOs POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER TI customers also evaluated this product.
TPS23753 IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES TI customers also evaluated this product.
TPS5450 5.5V to 36V, 5A, 500kHz Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TL431 Adjustable Precision Shunt Regulator VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE TI customers also evaluated this product.
TPS54316 Low Input Voltage 3A Synchronous Buck Converter with 3.3V Output DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TLV431A Low Voltage Adjustable Precision Shunt Regulator VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE TI customers also evaluated this product.

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