Product details


Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.15 Vin (Max) (V) 40 Vin (Min) (V) 3 Vout (Max) (V) 18 Vout (Min) (V) 1.2 Fixed output options (V) 3.3, 5 Noise (uVrms) 280 Iq (Typ) (mA) 0.018 Thermal resistance θJA (°C/W) 50.8 TI functional safety category Functional Safety-Capable Load capacitance (Min) (µF) 2.2 Rating Automotive, Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 0.75 PSRR @ 100 KHz (dB) 65 Dropout voltage (Vdo) (Typ) (mV) 155 Operating temperature range (C) -40 to 150 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-223 (DCY) 4 46 mm² 6.5 x 7 VSON (DRB) 8 9 mm² 3 x 3 open-in-new Find other Linear regulators (LDO)


  • 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:
    • Adjustable output: 1.2 V to 18 V
    • Fixed output: 3.3 V and 5 V
  • Output current: up to 150 mA
  • Output voltage accuracy: ±0.75% (max)
  • Low dropout voltage:
    • 225 mV (max) at 150 mA (VOUT ≥ 3.3 V)
  • Low quiescent current:
    • 18 µA (typ)
    • 4 µA (max) when disabled
  • 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 options:
    • DRB (8-pin VSON), RθJA: 50.8°C/W
    • DCY (4-pin SOT-223), RθJA: 85.5°C/W
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The TPS7B84-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 TPS7B84-Q1 has both fixed and adjustable output types. The wide output voltage range allows the device to generate the bias voltage for silicon carbide (SiC) gate drivers and microphones as well as power MCUs and processors.

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 ±0.75% over line, load, and temperature.

The device is available in both a SOT223 package and a small VSON package with wettable flanks that facilitates a compact printed circuit board (PCB) design. The low thermal resistance enables sustained operation despite significant dissipation across the device.

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Technical documentation

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Type Title Date
* Data sheet TPS7B84-Q1 150-mA, 40-V, Adjustable, Low-Dropout Regulator datasheet (Rev. A) Nov. 17, 2020
Technical article What’s not in the power MOSFET data sheet part 2: voltage-dependent leakage currents Jul. 23, 2021
Functional safety information TPS7B84-Q1 Functional Safety FIT Rate and FMD Jun. 09, 2020
User guide TPS7B8401EVM Evaluation Module User's Guide (Rev. A) Apr. 03, 2020
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018

Design & development

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

Hardware development

document-generic User guide

The MULTIPKGLDOEVM-823 evaluation module (EVM) helps you evaluate the operation and performance of several common packages of linear regulators for possible use in circuit applications. This particular EVM configuration has a DRB, DRV, DQN and DBV footprint for you to solder and (...)

  • Supports almost all LDO linear regulators in DBV, DRB, DRV and DQN packages
document-generic User guide

The TPS7B8401 evaluation module (EVM) is a platform for evaluating the operation and performance of the TPS7B84 family of linear regulators.

This particular EVM configuration contains a single wide-input-voltage, small-size, linear regulator for a wide range of applications. The regulator is capable (...)

  • Qualified for automotive applications
  • Operating junction temperature range: -40°C to 150°C
  • 3-V to 40-V wide VIN range up to 42 V transient
  • Output current: 150 mA (max)
  • 2% output voltage accuracy

Design tools & simulation

SBVM965.ZIP (18 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
SON (DRB) 8 View options
SOT-223 (DCY) 4 View options

Ordering & quality

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  • Ongoing reliability monitoring

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