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TPS7B4250-Q1

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Automotive 50-mA, off-battery (40-V), adjustable voltage-tracking low-dropout voltage regulator

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Data sheet

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TPS7B4255-Q1 ACTIVE Automotive, 70-mA 40-V voltage-tracking low-dropout (LDO) regulator with 5-mV tracking tolerance Higher current, improved transient performance, tighter accuracy

TPS7B4250-Q1

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Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.05 Output options Tracking Output Vout (max) (V) 18 Vout (min) (V) 1.5 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.04 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Thermal resistance θJA (°C/W) 172 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 4 Iout (max) (A) 0.05 Output options Tracking Output Vout (max) (V) 18 Vout (min) (V) 1.5 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.04 Features Reverse Current Protection, Reverse voltage protection, Short-to-battery protection Thermal resistance θJA (°C/W) 172 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • 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
  • –20-V to 45-V Wide, Maximum Input Voltage Range
  • Output Current, 50 mA
  • Very-Low Output-Tracking Tolerance,
    5 mV (max)
  • 150-mV Low Dropout Voltage When
    IOUT = 10 mA
  • Combined Reference and Enable Input
  • 40-µA Low Quiescent Current at Light Load
  • Extreme, Wide ESR Range.
    • Stable with 1-µF to 50-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Overtemperature Protection
  • Output Short-Circuit Proof to Ground and Supply
  • SOT-23 Package

All trademarks are the property of their respective owners.

  • 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
  • –20-V to 45-V Wide, Maximum Input Voltage Range
  • Output Current, 50 mA
  • Very-Low Output-Tracking Tolerance,
    5 mV (max)
  • 150-mV Low Dropout Voltage When
    IOUT = 10 mA
  • Combined Reference and Enable Input
  • 40-µA Low Quiescent Current at Light Load
  • Extreme, Wide ESR Range.
    • Stable with 1-µF to 50-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Overtemperature Protection
  • Output Short-Circuit Proof to Ground and Supply
  • SOT-23 Package

All trademarks are the property of their respective owners.

The TPS7B4250-Q1 device is a monolithic, integrated low-dropout voltage tracker. The device is available in a SOT-23 package. The TPS7B4250-Q1 device is designed to supply off-board sensors in an automotive environment. The IC has integrated protection for overload, over temperature, reverse polarity, and output short-circuit to the battery and ground.

A reference voltage applied at the adjust-input pin, ADJ, regulates supply voltages up to VIN = 45 V with high accuracy and loads up to 50 mA.

By setting the adjust/enable input pin, ADJ/EN, to low, the TPS7B4250-Q1 device switches to standby mode which reduces the quiescent current to the minimum value.

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

The TPS7B4250-Q1 device is a monolithic, integrated low-dropout voltage tracker. The device is available in a SOT-23 package. The TPS7B4250-Q1 device is designed to supply off-board sensors in an automotive environment. The IC has integrated protection for overload, over temperature, reverse polarity, and output short-circuit to the battery and ground.

A reference voltage applied at the adjust-input pin, ADJ, regulates supply voltages up to VIN = 45 V with high accuracy and loads up to 50 mA.

By setting the adjust/enable input pin, ADJ/EN, to low, the TPS7B4250-Q1 device switches to standby mode which reduces the quiescent current to the minimum value.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS7B4250-Q1 50-mA 40-V Voltage-Tracking LDO With 5-mV Tracking Tolerance datasheet (Rev. C) PDF | HTML 28 Sep 2016
Product overview Robust Tracking LDOs for Powering Off Board Sensors PDF | HTML 01 Oct 2025
Functional safety information TPS7B4250-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 17 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 Short-Circuit Reliability Test for TPS7B4250-Q1 16 Nov 2016
Application note Using Tracking LDOs as High-Side Switch (for Low-Current Applications) 28 Oct 2016
Application note Various Applications for Voltage-Tracking LDO 03 Aug 2016
Application note TPS7B4250-Q1 Pin FMEA 23 Sep 2015
User guide TPS7B4250 Evaluation Module 17 Oct 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS7B4250EVM — TPS7B4250-Q1 Tracking LDO Regulator Evaluation Module

The TPS7B4250 is a monolithic integrated low dropout voltage tracker in SOT-23 package. It is designed to supply off-board sensors in automotive environment. The IC has integrated protection for overload, over temperature, reverse polarity as well as output short circuit to battery and ground

Supply (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS7B4250 PSpice Transient Model

SLVM976.ZIP (20 KB) - PSpice Model
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Simulation model

TPS7B4250 TINA-TI Transient Reference Design

SLVMC73.TSC (502 KB) - TINA-TI Reference Design
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Simulation model

TPS7B4250 TINA-TI Transient Spice Model

SLVMC72.ZIP (7 KB) - TINA-TI Spice Model
Download
Simulation model

TPS7B4250 Unencrypted PSpice Transient Model

SLVMC87.ZIP (1 KB) - PSpice Model
Download
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Reference designs

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TIDA-00745 is a 14-W system-optimized (CISPR25 Class 4) SMPS design for an automotive body control module. All buck converters used in this design are switching at 2.1 MHz. 

The design is divided into four major blocks:

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Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBV) 5 Ultra Librarian
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