LM3509SDEV National Semiconductor, LM3509SDEV Datasheet - Page 6
![no-image](/images/manufacturer_photos/0/4/469/national_semiconductor_sml.jpg)
LM3509SDEV
Manufacturer Part Number
LM3509SDEV
Description
BOARD EVALUATION FOR LM3509SD
Manufacturer
National Semiconductor
Series
PowerWise®r
Specifications of LM3509SDEV
Current - Output / Channel
40mA
Outputs And Type
2, Non-Isolated
Voltage - Output
21V
Features
Dimmable, I²C Interface
Voltage - Input
2.7 ~ 5.5V
Utilized Ic / Part
LM3509
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
www.national.com
Typical Performance Characteristics
Mode), C
I
SUB
(L = TDK VLF3012AT-100MR49, R
+ I
MAIN
OUT
, T
= 2.2µF (OLED Mode), C
A
= +25°C unless otherwise specified.
10 LED Efficiency vs I
6 LED Efficiency vs I
LED Efficiency vs V
(2 Strings of 5LEDs)
(2 Strings of 3LEDs)
L
IN
= 0.36Ω, I
= 1µF, L = TDK VLF4012AT-100MR79, (R
LED
IN
LED
30004308
30004310
30004357
LED
= 40mA)
6
V
IN
(L = TDK VLF5014AT-100MR92, R
= 3.6V, LEDs are OSRAM (LW M67C), C
L
8 LED Efficiency vs I
4 LED Efficiency vs I
= 0.3Ω), R
LED Efficiency vs V
(2 Strings of 4LEDs)
(2 Strings of 2LEDs)
SET
= 8.06kΩ, UNI = '1', I
L
= 0.2Ω, I
LED
LED
IN
OUT
30004358
30004309
30004311
LED
= 1µF (LED
= 60mA)
LED
=