Datasheet

LM3444-MR16-Boost Reference Design NATIONAL SEMICONDUCTOR Page 13 of 20
LM3444 MR16 Boost evaluation board Dimming Waveforms
LINE
NEUTRAL
120V
AC
Power
Supply
Bench Circuit
V
1
I
1
Vp
Vp
Vs
Vs
VIN
VIN
LED+
LED-
LED
Board
V
4
I
4
V
2
I
2
V
3
I
3
Transformer
Electronic( )
Triac
Dimmer
LM3444 MR16
LED Driver
This LM3444 MR16 Boost evaluation board is designed to operate (flicker-free) with common Electronic Low
Voltage dimmers, and Electronic Transformers.
Dimmer Used – Lutron SELV-300P-GR
Electronic Transformer – Lightech LET75
20:1 dimming ratio
LM3444 MR16 Boost - Eight series connected LEDs at 200mA (90° Conduction Angle)
CH2 V2 Voltage, CH4 I4 Current