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TPS7B84-Q1

ACTIVE

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

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Data sheet

TPS7B84-Q1

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 3.3, 5, 8, 18 Vout (min) (V) 1.2, 3.3, 5, 8 Fixed output options (V) 3.3, 5, 8 Rating Automotive Noise (µVrms) 280 PSRR at 100 KHz (dB) 65 Iq (typ) (mA) 0.018 Thermal resistance θJA (°C/W) 50.8, 85.5 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Wettable flanks package Accuracy (%) 0.75 Dropout voltage (Vdo) (typ) (mV) 155 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 3.3, 5, 8, 18 Vout (min) (V) 1.2, 3.3, 5, 8 Fixed output options (V) 3.3, 5, 8 Rating Automotive Noise (µVrms) 280 PSRR at 100 KHz (dB) 65 Iq (typ) (mA) 0.018 Thermal resistance θJA (°C/W) 50.8, 85.5 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Wettable flanks package Accuracy (%) 0.75 Dropout voltage (Vdo) (typ) (mV) 155 Operating temperature range (°C) -40 to 125
SOT-223 (DCY) 4 45.5 mm² 6.5 x 7 VSON (DRB) 8 9 mm² 3 x 3
  • 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
  • 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

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.

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) PDF | HTML 17 Nov 2020
Functional safety information TPS7B84-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 07 Nov 2024
EVM User's guide TPS7B8401EVM Evaluation Module User's Guide (Rev. A) 03 Apr 2020

Design & development

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Evaluation board

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Simulation model

TPS7B84-Q1 PSpice Transient Model

SBVM965.ZIP (18 KB) - PSpice Model
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Reference designs

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This reference design demonstrates the combination of UCC21732 gate driver with a UCC14xxx series bias supply. This design can be used to drive a variety of power switches, including connecting directly to a Wolfspeed Silicon Carbide (SiC) field-effect transistor (FET) module. This reference design (...)
Test report: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-223 (DCY) 4 Ultra Librarian
VSON (DRB) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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