Texas Instruments LM3444 Buck-Boost Topology MR16 LED Bulb Reference Design LM3444MR16BBRB/NOPB LM3444MR16BBRB/NOPB 数据表

 

 

 

LM3444-MR16-Boost Reference Design 

Page 13 of 20

 

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)