Home Power management Linear & low-dropout (LDO) regulators
Home
Power management
Linear & low-dropout (LDO) regulators

TPS7B85-Q1

ACTIVE

Automotive 150-mA, 40-V, low-dropout voltage regulator with integrated voltage monitoring

Order now
Data sheet

TPS7B85-Q1

ACTIVE
Data sheet Order now

Product details

Output options Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Noise (µVrms) 280 Iq (typ) (mA) 0.02 Thermal resistance θJA (°C/W) 50.3 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Power-fail detect, Wettable flanks package Accuracy (%) 1.5 PSRR at 100 KHz (dB) 70 Dropout voltage (Vdo) (typ) (mV) 100 Operating temperature range (°C) -40 to 150
Output options Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Noise (µVrms) 280 Iq (typ) (mA) 0.02 Thermal resistance θJA (°C/W) 50.3 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good, Power-fail detect, Wettable flanks package Accuracy (%) 1.5 PSRR at 100 KHz (dB) 70 Dropout voltage (Vdo) (typ) (mV) 100 Operating temperature range (°C) -40 to 150
VSON (DRC) 10 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: 3.3 V and 5 V (fixed)
  • 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)
  • Integrated voltage detection
  • Power-good with adjustable threshold and programmable delay period
  • Stable with a 2.2-µF or larger capacitor
  • Functional Safety-Capable
  • Package: 10-pin VSON with thermal pad
    • Low thermal resistance (RθJA): 50.3°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: 3.3 V and 5 V (fixed)
  • 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)
  • Integrated voltage detection
  • Power-good with adjustable threshold and programmable delay period
  • Stable with a 2.2-µF or larger capacitor
  • Functional Safety-Capable
  • Package: 10-pin VSON with thermal pad
    • Low thermal resistance (RθJA): 50.3°C/W

The TPS7B85-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 ±0.75% over line, load, and temperature.

The TPS7B85-Q1 is equipped with power-good and integrated voltage monitoring. The power-good delay and voltage threshold can be adjusted by external components. The integrated voltage detector can be used to monitor the input voltage and alert downstream components (such as MCUs) when the battery voltage begins to fall.

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

The TPS7B85-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 ±0.75% over line, load, and temperature.

The TPS7B85-Q1 is equipped with power-good and integrated voltage monitoring. The power-good delay and voltage threshold can be adjusted by external components. The integrated voltage detector can be used to monitor the input voltage and alert downstream components (such as MCUs) when the battery voltage begins to fall.

The device is available in a small VSON package that facilitates a compact printed circuit board (PCB) design. The low thermal resistance enables sustained operation despite significant dissipation across the device.
open-in-new Find other Linear & low-dropout (LDO) regulators
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet TPS7B85-Q1 150-mA, 40-V, Low-Dropout Regulator With Power-Good and Integrated Voltage Monitoring datasheet (Rev. A) PDF | HTML 17 Nov 2020
Functional safety information TPS7B85-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 28 Apr 2023
EVM User's guide TPS7B8550 Evaluation Module User's Guide 14 Feb 2020

Design & development

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

Evaluation board

TPS7B8550EVM — TPS7B85-Q1 150-mA 40-V LDO voltage regulator with integrated voltage monitoring evaluation module

The TPS7B8550 evaluation module (EVM) evaluates the operation and performance of the TPS7B85-Q1 linear regulator. This EVM configuration contains a single wide-input-voltage, small-size, low-dropout (LDO) regulator for a wide range of applications.

The regulator is capable of delivering up to 150 mA (...)

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

TPS7B85-Q1 PSpice Transient Model

SBVM967.ZIP (12 KB) - PSpice Model
Download
Package Pins Download
VSON (DRC) 10 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos