Thermally enhanced Low V
FB
Step-Down LED Driver
ADT6780
典型性½特征
VIN=12V, Load : 1A / one 4W White LED and Ta=25℃,
除非特别注明
可调整的½启动时间
(C4=100nF)
V
SW
10V/div
V
EN
5V/div
V
SW
10V/div
V
EN
5V/div
V
OUT
2V/div
Enable turn-off
(C4=100nF)
V
OUT
2V/div
I
LED
0.5A/div
1㎳/div
I
LED
0.5A/div
40㎲/div
可调整的½启动时间
(C4 open)
V
SW
10V/div
V
EN
5V/div
V
SW
10V/div
V
EN
5V/div
V
OUT
2V/div
Enable turn-off
(C4 open)
V
OUT
2V/div
I
LED
0.5A/div
40㎲/div
I
LED
0.5A/div
40㎲/div
EN
管脚
PWM
调光
(C4 open, PWM Frequency=500Hz, Duty=50%)
V
EN
5V/div
LED Current (A)
V
OUT
2V/div
V
SW
10V/div
I
LED
1A/div
1㎳/div
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
LED Current vs PWM
占空比
(C4 open, PWM Frequency=500Hz)
20
40
60
80
100
PWM
占空比
(%)
*
此规格如有更改不另行通知
Aug. 23. 2012 / Rev0.0
6/13
http://www.ad-tech.co.kr
ADTECH [ ADTECH ]
