LM3500TLX-21/NOPB National Semiconductor, LM3500TLX-21/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3500TLX-21/NOPB
• Description: IC LED DRVR WHT BCKLT 8-USMD
• Manufacturer: National Semiconductor
• Type: Backlight, White LEDr

Specifications of LM3500TLX-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 ~ 85°C
• Current - Output / Channel: 640mA
• Internal Switch(s): Yes
• Efficiency: 85%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM3500TLX-21

I
V
ΔV
I
I
V
R
D
F
I
I
UVP
Q
CL
B
SD
L
SW
FB
IN
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
of T
Symbol
FB
V
V
V
V
FB, SHDN, and NC Voltages
Maximum Junction Temperature
Lead Temperature
(Note 3)
ESD Ratings (Note 4)
IN
OUT
OUT
SW
Human Body Model
Machine Model
A
(Note 2)
= −10°C to +85°C. Unless otherwise specified V
(LM3500-16)(Note 2)
(LM3500-21)(Note 2)
Quiescent Current, Device Not
Switching
Quiescent Current, Device
Switching
Shutdown
Feedback Voltage
Feedback Voltage Line
Regulation
Switch Current Limit
(LM3500-16)
Switch Current Limit
(LM3500-21)
FB Pin Bias Current
Input Voltage Range
NMOS Switch R
PMOS Switch R
Duty Cycle Limit (LM3500-16) FB = 0V
Duty Cycle Limit (LM3500-21) FB = 0V
Switching Frequency
SHDN Pin Current (Note 10)
Switch Leakage Current
(LM3500-16)
Switch Leakage Current
(LM3500-21)
Input Undervoltage Lockout
Parameter
DSON
DSON
−0.3V to V
FB > 0.54V
FB = 0V
SHDN = 0V
V
V
V
Duty Cycle = 80%
V
Duty Cycle = 70%
V
Duty Cycle = 70%
V
Duty Cycle = 63%
FB = 0.5V (Note 9)
V
V
SHDN = 5.5V
SHDN = 2.7V
SHDN = GND
V
V
ON Threshold
OFF Threshold
A
IN
IN
IN
IN
IN
IN
IN
OUT
SW
SW
−0.3V to 7.5V
−0.3V to 7.5V
−0.3V to 16V
−0.3V to 21V
= 25°C and those in boldface type apply over the Operating Temperature Range
= 2.7V to 7V
= 2.7V to 7V
= 2.7V,
= 3.0V,
= 2.7V,
= 3.0V,
= 2.7V, I
(Note 1)
= 15V
= 20V
= 6V, I
OUT
150°C
300°C
Conditions
+0.3V
IN
200V
2kV
SW
=2.7V and specification apply to both LM3500-16 and LM3500-21.
SW
= 300mA
= 300mA
3
Operating Conditions
Thermal Properties
Ambient Temperature
(Note 5)
Junction Temperature
Supply Voltage
Junction to Ambient Thermal
Resistance (θ
(Note 7)
0.47
0.85
Min
275
255
420
450
2.7
2.4
2.3
80
85
JA
)(Note 6)
(Note 8)
0.95
0.01
0.01
Typ
400
400
640
670
1.8
0.1
0.5
0.1
1.1
1.0
0.1
2.5
2.4
45
87
94
18
9
(Note 7)
Max
0.53
0.43
1.15
480
530
770
800
200
1.2
2.5
0.4
7.0
2.3
0.5
2.0
2.6
2.5
30
16
2
−40°C to +125°C
−40°C to +85°C
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2.7V to 7V
75°C/W
Units
MHz
%/V
mA
mA
µA
nA
µA
µA
%
Ω
V
V
V