LM3444-230VFLBK: 225 ~ 500mA @ 36V Max, 230VAC

Summary

This demonstration board highlights the performance of a LM3444 based Flyback LED driver solution that can be used to power a single LED string consisting of 4 to 10 series connected LEDs from an 180 VRMS to 265 VRMS, 50 Hz input power supply. The key performance characteristics under typical operating conditions are summarized in this application note.

This is a four-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 LM3444 datasheet for detailed instructions.

Specifications

Manufacturer	Texas Instruments
Category	Lighting
Sub-Category	LED Drivers - AC / Offline
Eval Board Part Number	LM3444-230VFLBK/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Board not Stocked
AC Voltage	230 V
Outputs and Type	1 Isolated
Current Out	350 mA
Voltage Out (Max)	36 V
Efficiency @ Conditions	>87%, 230V in, 8 LEDs @ 350 mA (Original) >87%, 230V in, 10 LEDs @ 375mA (Mod C) >85%, 230V in, 8 LEDs @ 270 mA (Original) >85%, 230V in, 10 LEDs @ 225 mA (Original) >83%, 230V in, 4 LEDs @ 350 mA (Original) >81%, 230V in, 4 LEDs @ 500 mA (Original)
Features	PFC Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	67 kHz
Component Count + Extras	49 + 8
Design Author	Texas Instruments
Application / Target Market	Lighting: LED Commercial Lighting Lighting: LED Home Lighting Lighting: LED Signage
Voltage In	180 ~ 265 VAC
Power Factor
Standard(s)
Main I.C. Base Part	LM3444
Date Created By Author
Date Added To Library	2012-04