Datasheet

LED +

LED -

LINE

NEUTRAL

TP3

TP2

TP4

TP5

Demo Board Wiring Overview

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11 Demo Board Wiring Overview

Figure 23. Wiring Connection Diagram

Table 2. Test Points

Test Name I/O Description

Point

TP3 LED + Output LED Constant Current Supply

Supplies voltage and constant-current to anode of LED string.

TP2 LED - Output LED Return Connection (not GND)

Connects to cathode of LED string. Do NOT connect to GND.

TP5 LINE Input AC Line Voltage

Connects directly to AC line or output of TRIAC dimmer of a 120VAC system.

TP4 NEUTRAL Input AC Neutral

Connects directly to AC neutral of a 120VAC system.

12 Demo Board Assembly

Figure 24. Top View

AN-2090 LM3448 -120VAC, 6W Isolated Flyback LED Driver SNOA554C–October 2011–Revised May 2013

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