LM3501TLX-21/NOPB National Semiconductor, LM3501TLX-21/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3501TLX-21/NOPB
• Description: IC LED DRVR WHT BCKLT 8-USMD
• Manufacturer: National Semiconductor
• Type: Backlight, White LEDr

Specifications of LM3501TLX-21/NOPB

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 850kHz ~ 1.15MHz
• Voltage - Supply: 2.7 V ~ 7 V
• Voltage - Output: 19.5 V ~ 20.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-MicroSMD
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 640mA
• Internal Switch(s): Yes
• Efficiency: 85%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM3501TLX-21

I
V
∆V
I
I
V
R
D
F
Q
CL
B
SW
FB
IN
Symbol
DSON
Limit
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Specifications in standard type face are for T
Range of T
LM3501-21.
V
V
V
V
FB Voltage
SHDN Voltage
CNTRL
Maximum Junction Temperature
Lead Temperature
(Soldering 10 sec.)
Vapor Phase
(60 sec.)
Infrared
(15 sec.)
FB
IN
OUT
OUT
SW
(Note 2)
(LM3501-16)(Note 2)
(LM3501-21)(Note 2)
Quiescent Current, Device Not
Switching
Quiescent Current, Device
Switching
Shutdown
Feedback Voltage
Feedback Voltage Line
Regulation
Switch Current Limit
(LM3501-16)
Switch Current Limit
(LM3501-21)
FB Pin Bias Current
Input Voltage Range
NMOS Switch R
PMOS Switch R
Duty Cycle Limit
(LM3501-16)
Duty Cycle Limit
(LM3501-21)
Switching Frequency
A
= −10˚C to +85˚C. Unless otherwise specified V
Parameter
DSON
DSON
−0.3V to V
−0.3V to V
−0.3V to 7.5V
−0.3V to 7.5V
−0.3V to 7.5V
A
−0.3V to 16V
−0.3V to 21V
FB
FB = 0V
SHDN = 0V
CNTRL = 2.7V,
V
CNTRL = 1V,
V
V
V
Duty Cycle = 80%
V
Duty Cycle = 70%
V
Duty Cycle = 70%
V
Duty Cycle = 63%
FB = 0.5V (Note 8)
V
V
FB = 0V
FB = 0V
= 25˚C and those in boldface type apply over the Operating Temperature
(Note 1)
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
>
= 2.7V to 7V
= 2.7V to 7V
= 2.7V to 7V
= 2.7V,
= 3.0V,
= 2.7V,
= 3.0V,
= 2.7V, I
IN
150˚C
300˚C
215˚C
220˚C
+0.3V
+0.3V
= 6V, I
0.54V
Conditions
SW
SW
IN
= 300 mA
= 300 mA
3
= 2.7V and specifications apply to both LM3501-16 and
Operating Conditions
Thermal Properties
ESD Ratings (Note 3)
Human Body Model
Machine Model
Junction Temperature
(Note 4)
Supply Voltage
CNTRL Max.
Junction to Ambient Thermal
Resistance (θ
JA
(Note 6)
) (Note 5)
0.485
0.14
0.85
Min
275
255
420
450
2.7
80
85
(Note 7)
0.515
0.95
0.19
Typ
400
400
640
670
0.1
0.1
1.3
1.0
45
87
94
2
(Note 6)
−40˚C to +125˚C
0.545
Max
0.24
0.43
1.15
480
530
770
800
200
1.2
2.5
0.5
7.0
2.3
2
2.7V to 7V
www.national.com
75˚C/W
200V
Units
2.7V
MHz
%/V
2kV
mA
mA
µA
nA
%
V
V
Ω