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Texas Instruments TPS612564CYFFR — DC-DC Power Modules

TPS612564CYFFR Boost Converter, 5.4V Fixed Output

MPNTPS612564CYFFR
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Texas Instruments TPS612564CYFFR, Step-Up Boost Converter, Fixed 5.4V Output, 2.4A Switch Current, 3.5MHz Switching Frequency, 9-DSBGA Package, -40°C to 85°C.

$0.6270Ref. price · indicative, final on quote
Texas Instruments TPS612564CYFFR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS612564CYFFR specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input5.5V
Voltage - output (Min (Fixed))5.4V
Output current2.4A (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 5.4V boost for battery-powered rails

The Texas Instruments TPS612564CYFFR is a fixed-output step-up (boost) converter that delivers a regulated 5.4V rail from a 2.3V to 5.5V input source. This makes it a direct fit for generating a 5V USB or logic supply from a single-cell Li-ion battery (3.0V–4.2V) or from 2–3 alkaline/NiMH cells, where the 2.3V minimum input allows operation even as the battery nears end-of-discharge.

At a 5.4V output, this translates to roughly 1.5–1.8A of continuous output current, depending on input voltage and inductor selection. That's enough headroom to power a Raspberry Pi Zero, a string of high-power LEDs, or a small sensor hub without needing an external FET.

3.5 MHz switching — small inductor, tight layout

The trade-off is higher switching losses, but for battery-powered designs where PCB area is the tighter constraint, this is the right balance. The synchronous rectifier improves efficiency at light loads by replacing the catch diode with a low-Rds(on) FET.

9-DSBGA package — rework and layout notes

The 9-DSBGA (0.4 mm pitch, 0.25 mm ball diameter) is a wafer-level chip-scale package. It requires a clean solder-paste stencil and a reflow profile matched to the JEDEC MSL-1 moisture sensitivity. The small ball pitch means the PCB pad design must follow TI's recommended land pattern exactly — no via-in-pad without tenting, and the output capacitor should sit within 2 mm of the package to keep the switch-node loop tight.

Frequently asked questions

Is TPS612564CYFFR a fixed output boost converter?

Yes, the output is fixed at 5.4V. There is no adjustable version in this ordering code — the feedback is internal. If you need a different output voltage, look at the TPS61256 family's adjustable variants.

What is the maximum switch current of TPS612564CYFFR?

This is the switch current limit, not the output current — the actual output current depends on input voltage, output voltage, and inductor ripple. At 3.3V input and 5.4V output, expect about 1.6A continuous output.

Is TPS612564CYFFR compatible with Li-ion battery input?

Yes. The input range of 2.3V to 5.5V covers the full operating voltage of a single-cell Li-ion battery (3.0V to 4.2V, with deep discharge down to 2.5V). The 2.3V minimum input allows the converter to keep running even when the battery is heavily discharged, which is useful for battery-powered IoT devices.

What are the alternatives to TPS612564CYFFR?

Within the same TPS61256 family, the TPS612562CYFFR offers a fixed 5.0V output and the TPS612563CYFFR offers a fixed 5.3V output — both are pin-compatible and share the same 9-DSBGA package. If you need an adjustable output, the TPS612561YFFR is the adjustable version with the same pinout. All share the 2.4A switch current and 3.5MHz switching frequency.