LM3502SQX-44/NOPB National Semiconductor, LM3502SQX-44/NOPB Datasheet - Page 11
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LM3502SQX-44/NOPB
Manufacturer Part Number
LM3502SQX-44/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-44/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
41 V ~ 42 V
Mounting Type
Surface Mount
Package / Case
16-LLP
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
750mA
Internal Switch(s)
Yes
Efficiency
80%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM3502SQX-44
Typical Performance Characteristics
( Circuit in Figure 1: L = DO1608C-223 and D = MBRM140T3.
Efficiency: η = P
/P
= [(V
– V
) * I
]/[V
* I
]. T
= 25˚C, unless otherwise stated.) (Continued)
OUT
IN
OUT
Fb
OUT
IN
IN
A
V
Pin Current vs V
Pin Voltage
Power NMOS R
(Figure 2: N1) vs V
OUT1
OUT1
DS(ON)
IN
20131719
20131720
NMOS R
(Figure 2: N2) vs V
PMOS R
(Figure 2: P1) vs V
DS(ON)
IN
DS(ON)
IN
20131722
20131721
Feedback Voltage vs Temperature
20131725
11
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