SD42509 Datasheet, PDF (6/7 Pages) Silan Microelectronics Joint-stock – 1A WHITE LED DRIVER

ELECTRICAL CHARACTERISTICS CURVE
Output 350mA efficiency changed with
input voltage
SD42509
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
6
3 LEDs
1 LED
2 LEDs
8 10 12 14 16 18 20
Input voltage(V)
Output 350mA current changed with
the rate of input voltage change
Output 700mA efficiency changed with
input voltage
Output 700mA current changed with
the rate of input voltage change
Output 1A efficiency changed with
input voltage
Output 1A current changed with
the rate of voltage change
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.4 2009.02.26
Page 6 of 8