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Texas Instruments TPS61259YFFT — DC-DC Power Modules

TPS61259YFFT Boost Converter – 5.1V Fixed Output

MPNTPS61259YFFT
Active

Texas Instruments TPS61259YFFT, step-up boost converter, fixed 5.1V output, 3.9A switch current, 9-DSBGA package, -40°C to 85°C operation.

$1.5700Ref. price · indicative, final on quote
Texas Instruments TPS61259YFFT datasheet (PDF)
Packaging9-UFBGA, DSBGA
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS61259YFFT specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input4.85V
Voltage - output (Min (Fixed))5.1V
Output current3.9A (Switch)
Frequency - switching3.5MHz
I/O channels1
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Up
TopologyBoost
Case9-UFBGA, DSBGA
Output configurationPositive
Synchronous rectifierYes

Product details

Fixed 5.1V boost with 3.9A switch

The TPS61259YFFT is a Texas Instruments step-up boost converter delivering a fixed 5.1V output from input voltages between 2.65V and 4.85V. Switching at 3.5MHz with synchronous rectification, the converter maintains efficiency across load while keeping external inductor and capacitor values small — a practical fit for space-constrained designs like portable instruments or battery-powered IoT nodes.

Housed in a 9-bump DSBGA (0.4mm pitch typical), the TPS61259YFFT requires a PCB with fine-trace capability and a stencil designed for wafer-level chip-scale packages.

No direct replacement or cross-reference is listed — the part is the current standard offering for this fixed 5.1V boost function.

Frequently asked questions

What is the datasheet for TPS61259YFFT?

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What is the pinout of TPS61259YFFT?

Engineers must confirm pin compatibility for PCB layout and replacement.

What is the replacement for TPS61259YFFT?

Technicians and buyers need drop-in alternatives when part is scarce or obsolete.