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TPS7B86-Q1

ACTIVE

Automotive 500-mA, 40-V, ultra-low-IQ, low-dropout (LDO) linear regulator with power good

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Data sheet

TPS7B86-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output Vout (max) (V) 18 Vout (min) (V) 1.2 Noise (µVrms) 280 PSRR at 100 KHz (dB) 65 Iq (typ) (mA) 0.02 Features Enable, Power good Thermal resistance θJA (°C/W) 29.6, 29.7, 41.8 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 0.85 Dropout voltage (Vdo) (typ) (mV) 370 Operating temperature range (°C) -40 to 150
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output Vout (max) (V) 18 Vout (min) (V) 1.2 Noise (µVrms) 280 PSRR at 100 KHz (dB) 65 Iq (typ) (mA) 0.02 Features Enable, Power good Thermal resistance θJA (°C/W) 29.6, 29.7, 41.8 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 0.85 Dropout voltage (Vdo) (typ) (mV) 370 Operating temperature range (°C) -40 to 150
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 TO-252 (KVU) 5 66.726 mm² 6.6 x 10.11
  • 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: 3V to 40V (42V max)
  • Output voltage range:
    • Adjustable output: 1.2V to 18V
    • Fixed 3.3V and 5V output
  • Maximum output current: 500mA
  • Output voltage accuracy: ±0.85% (max)
  • Low dropout voltage:
    • 475mV (max) at 450mA (VOUT ≥ 3.3V)
  • Low quiescent current:
    • 17µA (typ) at light loads
    • 5µA (max) when disabled
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1V/µs VIN slew rate)
  • Power-good with programmable delay period
  • Stable with a 2.2µF or larger capacitor
  • Functional Safety-Capable
  • Package options:
    • 5-pin TO-252 package: 29.7°C/W RθJA
    • 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA
  • 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: 3V to 40V (42V max)
  • Output voltage range:
    • Adjustable output: 1.2V to 18V
    • Fixed 3.3V and 5V output
  • Maximum output current: 500mA
  • Output voltage accuracy: ±0.85% (max)
  • Low dropout voltage:
    • 475mV (max) at 450mA (VOUT ≥ 3.3V)
  • Low quiescent current:
    • 17µA (typ) at light loads
    • 5µA (max) when disabled
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1V/µs VIN slew rate)
  • Power-good with programmable delay period
  • Stable with a 2.2µF or larger capacitor
  • Functional Safety-Capable
  • Package options:
    • 5-pin TO-252 package: 29.7°C/W RθJA
    • 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA

The TPS7B86-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 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is a convenient choice 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 ±0.85% over line, load, and temperature.

The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.

The device is available in thermally conductive packaging to allow the device components to efficiently transfer heat to the circuit board.

The TPS7B86-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 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is a convenient choice 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 ±0.85% over line, load, and temperature.

The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.

The device is available in thermally conductive packaging to allow the device components to efficiently transfer heat to the circuit board.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS7B86-Q1 Automotive, 500mA, 40V, Adjustable, Low-Dropout Regulator With Power-Good datasheet (Rev. D) PDF | HTML 30 Oct 2025
Application note An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) PDF | HTML 23 Sep 2025
Functional safety information TPS7B86-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 23 Sep 2022
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
E-book LDO Basics (Rev. A) 08 Apr 2019
Technical article LDO basics: dropout PDF | HTML 16 Mar 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, (...)

User guide: PDF
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Simulation model

TPS7B86-Q1 PSpice Transient Model

SBVM966.ZIP (6 KB) - PSpice Model
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HSOIC (DDA) 8 Ultra Librarian
TO-252 (KVU) 5 Ultra Librarian
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