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LTC3524 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3524
Description  Adjustable TFT Bias Supply with WLED Driver
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3524 Datasheet(HTML) 4 Page - Linear Technology

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LTC3524
4
3524f
TEMPERATURE (
°C)
–40
5.5
6.0
6.5
35
85
5.0
4.5
4.0
–15
10
60
7.0
7.5
8.0
3524 G10
|VN|
VH/2
VOUT
VN = 0mA
VN = 2mA
VH LOAD CURRENT (mA)
0
18
19
17
16
0.5
1
1.5
2
20
3524 G07
VN = 1mA
VN LOAD CURRENT (mA)
0
7.0
7.5
8.0
8.5
9.0
9.5
10.0
0.5
1
1.5
2
3524 G09
VH = 0mA
VH = 2mA
VH = 1mA
VIN (V)
2.5
19.5
20.0
20.5
4
5
19.0
18.5
18.0
3
3.5
4.5
21.0
21.5
22.0
3524 G05
5 LEDs
4 LEDs
3 LEDs
2 LEDs
PER STRING:
V2X LOAD CURRENT (mA)
0
3
5
9.5
9.0
8.5
12
4
10.0
3524 G06
VOUT CURRENT (mA)
010
50
70
100
20
40
50
60
90
80
30
60
70
3524 G01
VIN = 5
VIN = 4.2
VIN = 3.6
VIN = 3.1
VIN = 2.5
L = 10
μH
VOUT = 5V
VIN (V)
2.5
75
80
4.5
70
65
3
3.5
4
5
85
3524 G02
5 LEDs
4 LEDs
3 LEDs
2 LEDs
PER STRING:
L = 4.7
μH
LED CURRENT (mA)
5
55
60
65
70
75
80
85
10
15
20
25
3524 G03
VIN =5
VIN = 4.2
VIN = 3.6
VIN = 3.1
VIN = 2.5
L = 4.7
μH
VIN (V)
2.5
19.5
20.0
20.5
4
5
19.0
18.5
18.0
3
3.5
4.5
21.0
21.5
22.0
3524 G04
5 LEDs
4 LEDs
3 LEDs
2 LEDs
PER STRING:
TYPICAL PERFORMANCE CHARACTERISTICS
LCD Boost Efficiency
vs Load Current
LED Efficiency vs VIN
4 LEDs per String Efficiency
vs VIN and LED Current
LED1 String Current vs VIN
and Number of LEDs
LED2 String Current
vs VIN and Number of LEDs
V2X Output Voltage
vs V2X Load Current
VH Voltage vs VH and
VN Load Current (FBH = 0V)
VN Voltage vs VN and
VH Load Current (FBN = 1.3V)
VOUT, |VN|, and VH/2
Regulation Overtemperature
TA = 25°C, unless otherwise noted.



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