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TI AUTOMOTIVE · PART DECISION PAGE

TPS3851-Q1

High-accuracy supervisor with watchdog

High-accuracy supervisor with watchdog for automotive applications such as Steering / braking ECU. Qualification, OPNs and official sources are consolidated below for a fast project decision.

AutomotiveActiveExample package: VSON · 8 pinVerified 2026-11-05
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5-second verdict

AutomotiveAEC-Q100 Grade 1
Temperature-40 to +125°C
Functional safetyFunctional Safety-Capable
LifecycleActive
In one sentence: TI lists AEC-Q100 Grade 1 over -40 to +125°C. Package, temperature and configuration can vary by OPN; verify the exact orderable before ordering. TI lists Functional Safety-Capable with functional-safety documentation. The system ASIL claim still requires ECU-level verification.

Key specifications

Supplies monitored1
Threshold voltage 1 (typ) (V)1.8, 2.5, 3, 3.3, 5
FeaturesManual reset capable, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer
Reset threshold accuracy0.8
Iq (typ) (mA)0.01
Output driver type/reset outputActive-low, Open-drain

Orderable variants (OPNs)

The GPN is for selection; the full OPN is for ordering. These examples were observed on the verification date, not live stock. Variants may differ in package, temperature, gain/threshold and, for PMICs, NVM/sequencing. Distinguish TA from TJ in the exact datasheet.

OPNPackageTemperatureNote
TPS3851G18EQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G18SQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G25EQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G25SQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G30EQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G30SQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G33EQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G33SQDRBRQ1VSON (DRB) (8 pin)-40 to +125°C—
TPS3851G18EQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G18SQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G25EQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G25SQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G30EQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G30SQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G33EQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)
TPS3851G33SQDRBRQ1-40 to +125°C
VSON (DRB) (8 pin)

Official ordering page: https://www.ti.com/product/TPS3851-Q1

Typical applications

Steering / braking ECUSafety domain controllerPack temperature and voltage monitoring

FAQ

Is TPS3851-Q1 automotive qualified?

TI lists AEC-Q100 Grade 1 over -40 to +125°C. Package and temperature can differ by OPN; verify the ordering table and TI datasheet.

Which OPNs are available for TPS3851-Q1?

TI's product page currently lists 20 OPNs; this page shows the first 8 OPNs, including TPS3851G18EQDRBRQ1、TPS3851G18SQDRBRQ1. Use the full OPN for ordering, not the GPN.

Where can I check price, stock and lead time for TPS3851-Q1?

NuAxi does not invent stock or pricing on this page. Use TI's ordering page and authorized distributors for live stock, lead time and quotations; verify package, temperature, pinout and software before substitution.

Sources and verification

Related selection and design checks

NuAxi is an independent semiconductor market-intelligence platform and is not affiliated with Texas Instruments. Information is for selection reference only and is not a design, certification or procurement guarantee; verify against TI's official datasheet, ordering page and terms.

TPS3851-Q1: High-accuracy supervisor with watchdog — AEC-Q100, OPNs, alternates | NuAxi