LM3502SQ-44/NOPB National Semiconductor, LM3502SQ-44/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3502SQ-44/NOPB
• Description: IC LED DRIVR WHITE BCKLGT 16-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Backlight, White LEDr

Specifications of LM3502SQ-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: *LM3502SQ-44; LM3502SQ-44; LM3502SQ-44NOPB; LM3502SQ-44NOPBTR; LM3502SQ-44NOPBTR; LM3502SQ-44TR

Pin Descriptions/Functions
≤ 0.3V, the internal NMOS FET switch turns on and the SUB
display turns off. When V
FET switch turns off and the SUB display turns on. The En2
pin has an internal pull down resistor, thus the internal
NMOS FET switch is normally in the on state of operation
with the SUB display turned off.
If V
will enter a low I
internal FET switches are off. If V
be grounded or floating and use En1 along with Cntrl, to
enable the device.
Ordering Information
(Continued)
En1
Voltage Option
and V
16
16
16
16
25
25
25
25
35
35
35
35
44
44
44
44
En2
Q
are ≤ 0.3V and V
shutdown mode of operation where all the
En2
is ≥ 1.4V, the internal NMOS
OUT2
Cntrl
LM3502ITL-16
LM3502ITLX-16
LM3502SQ-16
LM3502SQX-16
LM3502ITL-25
LM3502ITLX-25
LM3502SQ-25
LM3502SQX-25
LM3502ITL-35
LM3502ITLX-35
LM3502SQ-35
LM3502SQX-35
LM3502ITL-44
LM3502ITLX-44
LM3502SQ-44
LM3502SQX-44
Order Number
is ≥ 1.4V, the LM3502
is not used, En2 must
3
Package Marking
SANB
SANB
L00048B
L00048B
SAPB
SAPB
L00049B
L00049B
SARB
SARB
L00044B
L00044B
SDLB
SDLB
L00050B
L00050B
En1 (Bump A2): Enable pin for the internal PMOS FET
switch (Figure 2: P1) during device operation. When V
≤ 0.3V, the internal PMOS FET switch turns on and the MAIN
display is turned off. When V
FET switch turns off and the MAIN display is turned on. The
En1 pin has an internal pull down resistor, thus the internal
PMOS FET switch is normally in the on state of operation
with the MAIN display turned off. If V
and V
mode of operation where all the internal FET switches are
off. If V
a long with Cntrl, to enable the device.
Cntrl
OUT2
is ≥ 1.4V, the LM3502 will enter a low I
is not used, En2 must be grounded and use En1
En1
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
250 units, Tape-and-Reel
3000 units, Tape-and-Reel
is ≥ 1.4V, the internal PMOS
Supplied As
En1
and V
En2
Q
www.national.com
are ≤ 0.3V
shutdown
En1
is