LM3502SQX-25/NOPB National Semiconductor, LM3502SQX-25/NOPB Datasheet - Page 10
![IC LED DRIVR WHITE BCKLGT 16-LLP](/photos/6/68/66869/pkg_sqa16a_sml.jpg)
LM3502SQX-25/NOPB
Manufacturer Part Number
LM3502SQX-25/NOPB
Description
IC LED DRIVR WHITE BCKLGT 16-LLP
Manufacturer
National Semiconductor
Series
PowerWise®r
Type
Backlight, White LEDr
Datasheet
1.LM3502SQ-35NOPB.pdf
(18 pages)
Specifications of LM3502SQX-25/NOPB
Topology
PWM, Step-Up (Boost)
Number Of Outputs
2
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
800kHz ~ 1.2MHz
Voltage - Supply
2.5 V ~ 5.5 V
Voltage - Output
23 V ~ 24 V
Mounting Type
Surface Mount
Package / Case
16-LLP
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
600mA
Internal Switch(s)
Yes
Efficiency
80%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM3502SQX-25
www.national.com
Typical Performance Characteristics
Efficiency: η = P
Cntrl Pin Current vs Cntrl Pin Voltage
En1 Pin Current vs En1 Pin Voltage
6 LED Efficiency vs LED Current
OUT
/P
IN
= [(V
OUT
– V
Fb
) * I
OUT
]/[V
20131715
20131717
20131713
IN
* I
IN
]. T
A
( Circuit in Figure 1: L = DO1608C-223 and D = MBRM140T3.
= 25˚C, unless otherwise stated.) (Continued)
10
Maximum Duty Cycle vs Temperature
En2 Pin Current vs En2 Pin Voltage
4 LED Efficiency vs LED Current
20131718
20131714
20131716