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Texas Instruments TPS61178RNWT — Power Management (PMIC / Gate Driver)

TPS61178RNWT Boost Converter IC – Texas Instruments

MPNTPS61178RNWT
Active

Texas Instruments TPS61178RNWT, step-up boost regulator, single output adjustable, 10A internal switch, 200kHz–2.2MHz switching frequency, 13-VQFN-HR (3x3.5mm) package, -40°C to 125°C junction temperature.

$5.8700Ref. price · indicative, final on quote
Texas Instruments TPS61178RNWT datasheet (PDF)
Packaging13-PowerVFQFN
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS61178RNWT specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input2.7V
Voltage - output20V
Voltage - output (Min (Fixed))4.5V
Output current10A (Switch)
Frequency200kHz ~ 2.2MHz
I/O channels1
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Up
TopologyBoost
Case13-PowerVFQFN
Output configurationPositive
Synchronous rectifierYes

Product details

What the 10A switch rating means for your rail

The TPS61178RNWT integrates a 10A switch — that's the peak current the internal FET can handle cycle-to-cycle. For a 5V-to-12V boost at 2A output, the inductor peak current runs around 6A; the 10A ceiling gives you headroom for transients without needing an external FET. Switching frequency is adjustable from 200kHz to 2.2MHz. Lower frequency buys better efficiency at heavy loads; higher frequency shrinks the inductor footprint — a trade-off you set with one resistor.

Supply range and output limits

Input range runs from 2.7V to 20V, so it can start from a single lithium cell or a 12V rail. Output adjusts from a 4.5V minimum up to 20V — the same ceiling as the input max, which simplifies the inductor voltage rating. Synchronous rectification is built in — no external Schottky needed, which saves a diode and cuts the layout loop area.

Texas Instruments continues to manufacture the part, and it is ROHS3 compliant.

Frequently asked questions

Is TPS61178RNWT compatible with a 5V input?

Yes. The input range starts at 2.7V and goes up to 20V, so 5V is well within the operating window. The output can be set from 4.5V to 20V.

What is the closest functional second-source for TPS61178RNWT?

The TPS55289RYQR is a buck-boost (not a pure boost) with a 6.35A switch and a wider input range down to 3.0V. It can step up or step down, but the lower switch current means it cannot match the 10A peak of the TPS61178RNWT. For a pure boost application at higher current, the TPS61178RNWT remains the primary choice.

What is the operating frequency of TPS61178RNWT?

The switching frequency is adjustable from 200kHz to 2.2MHz, set by a single external resistor.