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TPS62224DDCR

TPS62224DDCR Buck Converter, 400 mA, 1.25 MHz, SOT-23-5

MPNTPS62224DDCR
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Texas Instruments TPS62224DDCR, Step-Down Buck Converter, Fixed 1.6V Output, 400 mA, 1.25 MHz Switching, Synchronous Rectifier, SOT-23-5 Thin Package, -40°C to 85°C.

$0.6540Ref. price · indicative, final on quote
Texas Instruments TPS62224DDCR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS62224DDCR specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input2.5V
Voltage - output (Min (Fixed))1.6V
Output current400mA
Frequency - switching1.25MHz
I/O channels1
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
FunctionStep-Down
TopologyBuck
CaseSOT-23-5 Thin, TSOT-23-5
Output configurationPositive
Synchronous rectifierYes

Product details

Fixed 1.6 V rail — confirm before you commit

The TPS62224DDCR is a fixed-output step-down (buck) converter from Texas Instruments, delivering a regulated 1.6 V rail. That output voltage is not adjustable — if your BOM calls for 1.8 V or 1.2 V, this is not the part. The 400 mA output current ceiling and 1.25 MHz switching frequency are the other two numbers that decide fit: the current must cover your load with margin, and the switching speed sets the inductor value and output ripple you'll design around.

With a 400 mA output and synchronous rectification, this converter keeps efficiency above 90% across most of its load range — the synchronous switch eliminates the external Schottky diode that older non-synchronous bucks need. The 1.25 MHz switching frequency lets you use a small inductor, typically 2.2 µH to 4.7 µH, keeping the overall footprint tight. Input range is 2.5 V to 6 V, so it runs from a single Li-ion cell or a 3.3 V / 5 V regulated rail.

SOT-23-5 Thin — board area and storage note

The SOT-23-5 Thin (TSOT-23-5) package is a surface-mount footprint about 2.9 mm × 1.6 mm — small enough for space-constrained portable designs. The reels are moisture-sensitive; store them dry or bake before reflow if the seal is broken.

Frequently asked questions

Does TPS62224DDCR replace TPS62223?

The TPS62223 and TPS62224 are both fixed-output buck converters in the same family, but their output voltages differ. The TPS62224 outputs 1.6 V; the TPS62223 outputs a different fixed voltage. They are not drop-in replacements unless the rail voltage matches.

What is the difference between TPS62224 and TPS62225?

The TPS62224 and TPS62225 share the same 400 mA, 1.25 MHz buck converter core and SOT-23-5 Thin package. The difference is the fixed output voltage: TPS62224 is 1.6 V, TPS62225 is a different fixed value. Check the device marking or order code for the exact voltage.