Jul. 12. 2012 / Preliminary

6/13

* This specifications are subject to be changed without notice

http://www.ad-tech.co.kr

ADT6780

Thermally enhanced Low V

5V/div

2V/div

10V/div

1A/div

1㎳/div

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0

2040

6080

100

PWM Dimming Duty (%)

PWM Dimming Through Enable

(C4 open, PWM Frequency=500Hz, Duty=50%)

LED Current vs PWM Dimming Duty

(C4 open, PWM Frequency=500Hz)

Enable Start-up

(C4=100nF)

10V/div

5V/div

2V/div

0.5A/div

1㎳/div

10V/div

5V/div

2V/div

0.5A/div

40㎲/div

Enable Turn-off

(C4=100nF)

Enable Start-up

(C4 open)

10V/div

5V/div

2V/div

0.5A/div

40㎲/div

Enable Turn-off

(C4 open)

10V/div

5V/div

2V/div

0.5A/div

40㎲/div

Typical Operating Characteristics

VIN=12V, Load : 1A / one 4W White LED and Ta=25℃, unless otherwise noted