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Texas Instruments TPS3839G33DBZR — Power Management (PMIC / Gate Driver)

TPS3839G33DBZR — TI Simple Reset/Power-On Reset

MPNTPS3839G33DBZR
Active

Texas Instruments TPS3839G33DBZR, Simple Reset/Power-On Reset, 1-channel supervisor, 3.08 V threshold, active-low push-pull output, 120 ms minimum reset timeout, SOT-23-3 package, -40°C to 85°C.

$0.9400Ref. price · indicative, final on quote
Texas Instruments TPS3839G33DBZR datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS3839G33DBZR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold3.08V
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
CaseTO-236-3, SC-59, SOT-23-3

Product details

What this supervisor does and who specifies it

It monitors a 3.3 V rail and asserts a reset output when the supply drops below 3.08 V — the exact threshold for a 3.3 V ±2% system that needs a clean brown-out boundary. The output is push-pull, active low, with a minimum reset timeout of 120 ms. That means no external pull-up resistor on the reset line — a BOM simplification that matters when every passive counts on a dense board.

The TLV803EA29VDBZR and TLV803ED29DBZR are functional alternatives but differ in output type and timeout — verify the reset timing and pull-up requirement before swapping.

Frequently asked questions

Does TPS3839G33DBZR need an external pull-up resistor?

No. The output is push-pull, so the reset line is driven high and low without an external resistor. This contrasts with open-drain supervisors like the TLV803EA29VDBZR, which require a pull-up to the reset rail.

What is the closest functional second-source for TPS3839G33DBZR?

The TLV803EA29VDBZR and TLV803ED29DBZR are the nearest functional alternatives. Both are simple reset supervisors with active-low reset, but they use open-drain outputs (require a pull-up), have different reset timeout values (130 ms and 33 ms minimum respectively), and are rated to 125°C. Verify the reset timing and output type before substituting.