Details, datasheet, quote on part number: TPS7A3901DSCT
PartTPS7A3901DSCT
CategorySemiconductors => Power Management => Linear Regulator (LDO) => Multi-Channel LDO
Part familyTPS7A39 Dual, 150mA, Wide-Vin, Positive and Negative Low-Dropout (LDO) Voltage Regulator
TitleLDO Voltage Regulators Dual,150mA,Wide-Vin +/-(LDO) Vreg
DescriptionDual, 150mA, Wide-Vin, Positive and Negative Low-Dropout (LDO) Voltage Regulator 10-WSON -40 to 125
CompanyTexas Instruments Inc.
StatusACTIVE
ROHSY
SampleNo
DatasheetDownload TPS7A3901DSCT datasheet
Specifications 
Accuracy(%)2.5
Vin(Min)(V)-33
PSRR @ 100KHz(dB)56
Vin(Max)(V)33
RatingCatalog
Operating Temperature Range(C)-40 to 125
Output OptionsAdjustable Output
Iout2(A)0.15
Vout2(Max)(V)0
Package GroupWSON
Approx. Price (US$)2.50 | 1ku
Iout(Max)(A)0.15
Vdo(Typ)(mV)238
Vout(Max)(V)30
Regulated Outputs(#)2
Noise(uVrms)15
Thermal Resistance θJA(°C/W)44
Vout2(Min)(V)-30
Vout(Min)(V)1.2
FeaturesEnable,Soft Start
Output Capacitor TypeCeramic
Iq(Typ)(mA)0.075
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
10DSCWSONS-PDSO-N250LARGE T&RA3901 33.75.5
Application notes
• Dual Bipolar Power-Supply Considerations for Amplifiers | Doc
Evaluation Kits
TPS7A39EVM-865: TPS7A39 Dual, 150mA, Wide-Vin, Positive and Negative LDO Voltage Regulator Evaluation Module
Spice Model
TPS7A3901 Unencrypted PSpice Transient Model - ZIP (09/08/2017)
TPS7A3901 PSpice Transient Model - ZIP (09/08/2017)

Others parts numbering
TPS7A39EVM-865: Power Management IC Development Tools
PTPS7A3901DSC Preliminary Release: LDO Voltage Regulators
TPS7A3901DSCR

 

Features, Applications

TPS7A39 Dual, 150-mA, Wide VIN Positive and Negative LDO Voltage Regulator

The TPS7A39 device is a dual, monolithic, highPSRR, positive and negative low-dropout (LDO) voltage regulator capable of sourcing (and sinking) mA of current. The regulated outputs can be independently and externally adjusted to symmetrical or asymmetrical voltages, making this device an ideal dual, bipolar power supply for signal conditioning. Both positive and negative outputs of the TPS7A39 ratiometrically track each other during startup to mitigate floating conditions and other power-supply sequencing issues common in dual-rail systems. The negative output can regulate 0 V, extending the common-mode range for single-supply amplifiers. The TPS7A39 also features high PSRR to eliminate power-supply noise, such as switching noise, that can compromise signal integrity. Both regulators are controlled with a single positive logic enable pin for interfacing with standard digital logic. A capacitor-programmable soft-start function controls in-rush current and start-up time. The internal reference voltage of the TPS7A39 can be overridden with an external reference to enable precision outputs, output voltage margining, or to track other power supplies. Additionally, the TPS7A39 has a buffered reference output that can be used as a voltage reference for other components in the system. These features make the TPS7A39 a robust, simplified solution to power operational amplifiers, digital-to-analog converters (DACs), and other precision analog circuitry. Device Information(1)

PART NUMBER TPS7A39 PACKAGE WSON (10) BODY SIZE (NOM) 3.00 mm

Positive and Negative LDOs in One Package Wide Input Voltage Range: 33 V Wide Output Voltage Range: Positive Range: V Negative Range: 0 V Output Current: 150 mA per Channel Monotonic Start-Up Tracking High Power-Supply Rejection Ratio (PSRR): dB (120 Hz) to 2 MHz) Output Voltage Noise: 21 VRMS (10 Hz100 kHz) Buffered 1.2-V Reference Output Stable With 10-F or Larger Output Capacitor Single Positive-Logic Enable Adjustable Soft-Start In-Rush Control 3-mm, 10-Pin WSON Package Low Thermal Resistance: RJA = 44.4C/W Operating Temperature Range: to +125C

Supply Rails for Op Amps, ADCs, DACs, and Other High-Precision Analog Circuitry Post DC-DC Regulation and Filtering Analog I/O Modules Test and Measurement Rx, Tx, and PA Circuitry Industrial Instrumentation Medical Imaging

(1) For all available packages, see the orderable addendum at the end of the data sheet.

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.

Features.................................................................. Applications........................................................... Description............................................................. Revision History..................................................... Pin Configuration and Functions......................... Specifications.........................................................

Absolute Maximum Ratings...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information.................................................. Electrical Characteristics........................................... Startup Characteristics.............................................. Typical Characteristics.............................................. Overview................................................................. Functional Block Diagram....................................... Feature Description................................................. Device Functional Modes........................................

10.1 Layout Guidelines................................................. 39 10.2 Layout Example.................................................... 40 10.3 Package Mounting................................................ 40

Device Support...................................................... Documentation Support........................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks........................................................... Electrostatic Discharge Caution............................ Glossary................................................................

Changes from Original (July 2017) to Revision A Page
Submit Documentation Feedback Product Folder Links: TPS7A39

PIN NO. 1 NAME INP I/O DESCRIPTION Positive input. (1) or larger capacitor must be tied from this pin to ground to ensure stability. Place the input capacitor as close to the input as possible; see the Capacitor Recommendations section for more information. Enable pin. Driving this pin to logic high (VEN VIH(EN)) enables the device; driving this pin to logic low (VEN VIL(EN)) disables the device. If enable functionality is not required, this pin must be connected to INP; see the Application and Implementation section for more detail. The enable voltage cannot exceed the input voltage (VEN VINP). Noise-reduction, soft-start pin. Connecting an external capacitor between this pin and ground reduces reference voltage noise and enables soft-start and start-up tracking. 10-nF or larger capacitor (CNR/SS) is recommended to be connected from NR/SS to GND to maximize or optimize ac performance and to ensure start-up tracking. This pin can also be driven externally to provide greater output voltage accuracy and lower noise, see the User-Settable Buffered Reference section for more information. Ground pin. This pin must be connected to ground and the thermal pad with a low-impedance connection. Negative input. (1) or larger capacitor must be tied from this pin to ground to ensure stability. Place the input capacitor as close to the input as possible; see the Capacitor Recommendations section for more information. Negative output. (1) or larger capacitor must be tied from this pin to ground to ensure stability. Place the output capacitor as close to the output as possible; see the Capacitor Recommendations section for more information. Negative output feedback pin. This pin is used to set the negative output voltage. Although not required, a 10-nF feed-forward capacitor from FBN to OUTN (as close to the device as possible) is recommended to maximize ac performance. Nominally this pin is regulated to VFBN. Do not connect to ground. Buffered reference output. This pin is connected to FBN through R2 and the voltage at this node is inverted and scaled up by the negative feedback network to provide the desired output voltage. The buffered reference can be used to drive external circuits, and has a 1-mA maximum load. Positive output feedback pin. This pin is used to set the positive output voltage. Although not required, a 10-nF feed-forward capacitor from FBP to OUTP (as close to the device as possible) is recommended to maximize ac performance. Nominally this pin is regulated to VFBP. Do not connect this pin directly to ground. Positive output. (1) or larger capacitor must be tied from this pin to ground to ensure stability. Place the output capacitor as close to the output as possible; see the Capacitor Recommendations section for more information. Connect the thermal pad to a large-area ground plane. The thermal pad is internally connected to GND.

The nominal input and output capacitance must be greater than 2.2 F; throughout this document the nominal derating on these capacitors is 80%. Take care to ensure that the effective capacitance at the pin is greater than 2.2 F.


 

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