Tiny Synchronous Buck Converter in TO-220 Size Reference Design


Design files


This design is a tiny synchronous buck converter which can be used either for 3.3V or 5.0V output voltage and a maximum current of 600mA. It has the same size like a TO-220 package and can directly replace linear regulators like the well-known uA7805.

Output voltage options PMP8581.1
Vin (Min) (V) 10
Vin (Max) (V) 30
Vout (Nom) (V) 5
Iout (Max) (A) .6
Output Power (W) 3
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SNVU347.PDF (1588 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SNVR341.PDF (70 K)

Detailed schematic diagram for design layout and components

SNVR342.PDF (30 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

SNVC147.ZIP (14 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Isolated DC/DC converters & modules

LM250177.5-48V Wide Vin, 650mA Constant On-Time Synchronous Buck Regulator

Data sheet: PDF

Technical documentation

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Type Title Date
Test report PMP8581 Test Results Sep. 19, 2013

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