LM3448 – 220VAC, 8W Dimmable Isolated


Design files


This demonstration board highlights the performance of a LM3448 based Flyback LED driver solution that can be used to power a single LED string consisting of 6 / 7 series connected LEDs from an 198 VRMS to 264 VRMS, 50 Hz input power supply. The integrated high-voltage and low Rdson MOSFET reduces design complexity while improving LED driver efficiency. This is a two-layer board using the bottom and top layer for component placement. The demonstration board can be modified to adjust the LED forward current, the number of series connected LEDs that are driven and the switching frequency. Refer to the LM3448 datasheet for detailed instructions. A bill of materials is included that describes the parts used on this demonstration board

Output voltage options PMP8001.1
Vin (Min) (V) 198
Vin (Max) (V) 264
Vout (Nom) (V) 20
Iout (Max) (A) .35
Output Power (W) 7
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- Quasi Resonant

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.

SNOU017.PDF (428 K)

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

SNOR001.PDF (236 K)

Detailed schematic diagram for design layout and components

SNOR002.PDF (141 K)

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

SNOC006.ZIP (248 K)

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

SNOU015.PDF (187 K)

PCB layer plot file used for generating PCB design layout

SNOU016.PDF (187 K)

PCB layer plot file used for generating PCB design layout

Technical documentation

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Type Title Date
Test report PMP8001 Test Results Mar. 22, 2012

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