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Texas Instruments TPS3809K33DBVR — Power Management (PMIC / Gate Driver)

TPS3809K33DBVR – TI Simple Reset IC, 2.93V Threshold

MPNTPS3809K33DBVR
Active

Texas Instruments TPS3809K33DBVR, Simple Reset/Power-On Reset IC, 1-channel, Active Low, Push-Pull output, 2.93V threshold, 120ms min timeout, SOT-23-3 package, -40°C to 85°C.

$1.1100Ref. price · indicative, final on quote
Texas Instruments TPS3809K33DBVR 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

TPS3809K33DBVR specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold2.93V
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

Active production — 2.93V reset supervisor in SOT-23-3

The TPS3809K33DBVR is an active-production simple reset IC from Texas Instruments, monitoring a single 2.93V rail with a push-pull, active-low output. The SOT-23-3 package fits tight layouts where a discrete reset circuit would take more board area.

The 2.93V threshold is the exact trip point: when VDD drops below this level, the reset output goes low and stays low for at least 120ms after the supply recovers above the threshold. For a 3.3V rail, this threshold sits at roughly 89% of nominal, which is typical for brown-out protection — the supervisor asserts reset before the logic supply drops enough to cause erratic behaviour.

Temperature grade and package — industrial range, SOT-23-3 footprint

The SOT-23-3 footprint (TO-236-3 / SC-59 compatible) is a standard three-pin layout: GND, RESET, VDD. The small body means the reset IC sits next to the processor without consuming routing channels.

The part is ROHS3 compliant.

Frequently asked questions

How can I order TPS3809K33DBVR or check availability?

The TPS3809K33DBVR is an active Texas Instruments part with no end-of-life status. We source it through our distribution network and quote to order against your BOM quantity — submit an RFQ for current pricing and lead time. The part is available in tape-and-reel (DBVR suffix) or cut-tape (DBVT suffix).

What is the exact reset threshold voltage of TPS3809K33DBVR?

The reset threshold is 2.93V. When VDD falls below this level, the reset output goes active low and remains low for at least 120ms after the supply returns above the threshold.

What is the difference between TPS3809K33DBVR and TPS3809K33DBVT?

The only difference is the packaging format: DBVR is tape-and-reel (3000 units per reel), while DBVT is cut-tape. The silicon, threshold, and package are identical.

Can TPS3809K33DBVR replace a general 2.93V supervisor like MAX809?

The TPS3809K33DBVR is a functional equivalent for many 2.93V supervisor applications — both are active-low reset ICs with push-pull output. However, the MAX809 uses an open-drain output (requires a pull-up resistor), while the TPS3809 uses a push-pull output. Confirm the output type matches your circuit before substituting.