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TPS7B83-Q1

ACTIVE

Automotive 150-mA, 40-V, low-dropout (LDO) linear regulator with fast transient response

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Data sheet

TPS7B83-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.15 Output options Fixed Output Vout (max) (V) 3.3, 5, 18 Vout (min) (V) 3.3, 5 Fixed output options (V) 3.3, 5 Noise (µVrms) 280 PSRR at 100 KHz (dB) 70 Iq (typ) (mA) 0.02 Thermal resistance θJA (°C/W) 77.1 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.15 Output options Fixed Output Vout (max) (V) 3.3, 5, 18 Vout (min) (V) 3.3, 5 Fixed output options (V) 3.3, 5 Noise (µVrms) 280 PSRR at 100 KHz (dB) 70 Iq (typ) (mA) 0.02 Thermal resistance θJA (°C/W) 77.1 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 160 Operating temperature range (°C) -40 to 125
SOT-223 (DCY) 4 45.5 mm² (6.5 mm × 7 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3 V to 40 V (42 V max)
  • Output voltage range: 3.3 V and 5 V (fixed)
  • Output current: up to 150 mA
  • Output voltage accuracy: ±1% (max)
  • Low dropout voltage:
    • 230 mV (max) at 150 mA (VOUT ≥ 3.3 V)
  • Low quiescent current:
    • 18 µA (typ)
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1-V/µs VIN slew rate)
  • Stable with a 2.2-µF or larger capacitor
  • Functional Safety-Capable
  • Package: 3-pin SOT-223
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Junction temperature: –40°C to +150°C, TJ
  • Input voltage range: 3 V to 40 V (42 V max)
  • Output voltage range: 3.3 V and 5 V (fixed)
  • Output current: up to 150 mA
  • Output voltage accuracy: ±1% (max)
  • Low dropout voltage:
    • 230 mV (max) at 150 mA (VOUT ≥ 3.3 V)
  • Low quiescent current:
    • 18 µA (typ)
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1-V/µs VIN slew rate)
  • Stable with a 2.2-µF or larger capacitor
  • Functional Safety-Capable
  • Package: 3-pin SOT-223

The TPS7B83-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40 V, which allows the device to withstand transients (such as load dump) that are anticipated in automotive systems. With only an 18-µA quiescent current, the device is an optimal solution for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±1% over line, load, and temperature.

The TPS7B83-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40 V, which allows the device to withstand transients (such as load dump) that are anticipated in automotive systems. With only an 18-µA quiescent current, the device is an optimal solution for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.

The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±1% over line, load, and temperature.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS7B83-Q1 150-mA, 40-V, Low-Dropout Regulator datasheet PDF | HTML Nov 17, 2020
Application note An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) PDF | HTML Sep 23, 2025
Functional safety information TPS7B83-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML Feb 8, 2023
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun 27, 2019
E-book LDO Basics (Rev. A) Apr 8, 2019
Technical article LDO basics: dropout PDF | HTML Mar 16, 2017

Design & development

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Evaluation board

MLTLDO2EVM-037 — Universal LDO linear voltage regulator evaluation module for DCY, DDA and KVU packages

The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU, (...)

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Simulation model

TPS7B83-Q1 PSpice Transient Model (3.3-V Output)

SBVM970.ZIP (6 KB) - PSpice model
Supported products & hardware
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SOT-223 (DCY) 4 Ultra Librarian
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