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Texas Instruments TPS3831G18DQNR — Power Management (PMIC / Gate Driver)

TPS3831G18DQNR Texas Instruments Simple Reset/Power-On

MPNTPS3831G18DQNR
Active

Texas Instruments TPS3831G18DQNR, Simple Reset/Power-On Reset, 1.67V threshold, 120ms minimum reset timeout, Active Low push-pull output, -40°C to 85°C, 4-X2SON (1x1) package.

$1.3400Ref. price · indicative, final on quote
Texas Instruments TPS3831G18DQNR datasheet (PDF)
Packaging4-XDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3831G18DQNR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold1.67V
Number of voltages monitored1
Operating temperature-40°C~85°C(TA)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout120ms Minimum
Case4-XDFN Exposed Pad

Product details

1.67V threshold supervisor for 1.8V rails

The TPS3831G18DQNR is a Texas Instruments Simple Reset/Power-On Reset IC that monitors a single 1.8V supply rail with a threshold of 1.67V. The 120ms minimum reset timeout gives the downstream processor or FPGA time to stabilize after power-up or a brown-out event. The push-pull, totem-pole output drives the reset line directly without an external pull-up resistor, saving a component on the BOM. The active-low reset is the standard polarity for most MCU and DSP reset inputs.

Texas Instruments lists this as a current production part, so BOM planners can source it without near-term obsolescence risk. ROHS3 compliant, meeting the latest EU restriction-of-hazardous-substances directive for lead-free soldering processes.

Frequently asked questions

Can the TPS3831G18DQNR replace a TPS3831G18DGN?

The TPS3831G18DQNR and TPS3831G18DGN share the same base product number TPS3831 and the same electrical specs (1.67V threshold, 120ms timeout, push-pull output). The difference is the package: the DQNR is in a 4-X2SON (1x1 mm), while the DGN is in a different package (SOT-23). The DQNR is the smaller, leadless package option — verify the PCB footprint and land pattern before substitution.

Can the TPS3831G18DQNR be used with a 1.8V supply?

Yes. The 1.67V threshold is designed to monitor a nominal 1.8V rail, providing approximately 130mV of margin before the reset is triggered. This suits low-voltage cores in MCUs, DSPs, and FPGAs.