Startseite Energiemanagement Linear- und Low-Dropout-Regler (LDO)
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Linear- und Low-Dropout-Regler (LDO)

TPS7B4254-Q1

AKTIV

Low-Drop-Out-Spannungsregler für die Automobilindustrie, 150 mA, batteriebetrieben (40 V), einstellb

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NEU TPS7B4256-Q1 AKTIV Spannungs-Tracking-LDO-Regler (FB) mit 70 mA, 40 V, mit 6 mV Tracking-Toleranz für die Automobilindu 70-mA alternative with improved transient response and lower quiescent current

TPS7B4254-Q1

AKTIV
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Produktdetails

Output options Tracking Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 40 Vout (min) (V) 2 Iq (typ) (mA) 0.06 Thermal resistance θJA (°C/W) 45 Rating Automotive Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection PSRR at 100 KHz (dB) 43 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
Output options Tracking Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 40 Vout (min) (V) 2 Iq (typ) (mA) 0.06 Thermal resistance θJA (°C/W) 45 Rating Automotive Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection PSRR at 100 KHz (dB) 43 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C6
  • –40-V to 45-V Wide Input-Voltage Range (Maximum)
  • Output-Voltage Adjust Range: 2 V to 40 V
  • 150-mA Output Current Capability
  • Very Low Output-Tracking Tolerance, ±4 mV
  • 160-mV Low-Dropout Voltage When IOUT = 100 mA
  • Low Quiescent Current (I(Q)):
    • < 4 µA When ADJ = LOW
    • 60 µA Typical at Light Load
  • Extremely Wide ESR Range
    • 10-µF to 500-µF Ceramic Output Capacitor
    • ESR Range from 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Current-Limit and Thermal-Shutdown Protection
  • Output Short-Circuit-Proof to Ground and Supply
  • Inductive Clamp at OUT Pin
  • 8-Pin SO PowerPAD Package With Exposed Thermal Pad
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 3A
    • Device CDM ESD Classification Level C6
  • –40-V to 45-V Wide Input-Voltage Range (Maximum)
  • Output-Voltage Adjust Range: 2 V to 40 V
  • 150-mA Output Current Capability
  • Very Low Output-Tracking Tolerance, ±4 mV
  • 160-mV Low-Dropout Voltage When IOUT = 100 mA
  • Low Quiescent Current (I(Q)):
    • < 4 µA When ADJ = LOW
    • 60 µA Typical at Light Load
  • Extremely Wide ESR Range
    • 10-µF to 500-µF Ceramic Output Capacitor
    • ESR Range from 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Current-Limit and Thermal-Shutdown Protection
  • Output Short-Circuit-Proof to Ground and Supply
  • Inductive Clamp at OUT Pin
  • 8-Pin SO PowerPAD Package With Exposed Thermal Pad

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4254-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to the off-board modules, the device offers a 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 device also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4254-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to the off-board modules, the device offers a 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 device also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS7B4254-Q1 150-mA 40-V Voltage-Tracking LDO With 4-mV Tracking Tolerance datasheet (Rev. B) PDF | HTML 19 Jul 2016
Functional safety information TPS7B4254-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 28 Apr 2023
Application brief Automotive Off-Board Sensor Power Considerations 20 Sep 2018
More literature Fundamentals of designing with LDOs in auto battery direct connect applications 27 Feb 2017
Application note Using Tracking LDOs as High-Side Switch (for Low-Current Applications) 28 Okt 2016
Application note Various Applications for Voltage-Tracking LDO 03 Aug 2016
EVM User's guide TPS7B4254-Q1 Evaluation Module User's Guide 27 Jun 2016

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

TPS7B4254EVM — TPS7B4254-Q1 Spannungsnachführender LDO-Regler – Evaluierungsmodul

TPS7B4254-Q1 evaluation modules (EVM) help designers evaluate the operation and performance of TPS7B4254QDDARQ1 voltage-tracking LDO. The TPS7B4254-Q1 is a monolithic integrated low dropout voltage tracker in HSOIC-DDA package. It is designed to supply off-board sensors in automotive environment. (...)
Benutzerhandbuch: PDF
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Simulationsmodell

TPS7B4254 PSpice Transient Model (Rev. A)

SLVMBJ6A.ZIP (96 KB) - PSpice Model
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Simulationsmodell

TPS7B4254-Q1 TINA-TI Transient Reference Design (Rev. A)

SLVMBR5A.TSC (45 KB) - TINA-TI Reference Design
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Simulationsmodell

TPS7B4254-Q1 TINA-TI Transient Spice Model (Rev. A)

SLVMBR8A.ZIP (18 KB) - TINA-TI Spice Model
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Simulationsmodell

TPS7B4254-Q1 Unencrypted PSpice Transient Model

SLVMC86.ZIP (3 KB) - PSpice Model
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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HSOIC (DDA) 8 Ultra Librarian
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