LT3491EDC#TRPBF Linear Technology, LT3491EDC#TRPBF Datasheet - Page 14
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LT3491EDC#TRPBF
Manufacturer Part Number
LT3491EDC#TRPBF
Description
IC LED DRIVER WHITE BCKLGT 6-DFN
Manufacturer
Linear Technology
Type
Backlight, White LEDr
Datasheet
1.LT3491EDCTRMPBF.pdf
(16 pages)
Specifications of LT3491EDC#TRPBF
Topology
PWM, Step-Up (Boost)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
2.3MHz
Voltage - Supply
2.5 V ~ 12 V
Mounting Type
Surface Mount
Package / Case
6-DFN
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
200mA
Internal Switch(s)
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Efficiency
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LT3491
TYPICAL APPLICATIO S
14
3V TO 5V
3V TO 5V
V
V
IN
IN
Li-Ion Driver for Three White LEDs
10µH
Li-Ion Driver for Five White LEDs
10µH
C1: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN GMK316BJ105ML
L1: MURATA LQH32CN100
C1
1µF
C1: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN GMK316BJ105ML
L1: MURATA LQH32CN100
C1
1µF
L1
L1
DIMMING CONTROL
DIMMING CONTROL
V
SW
V
SW
SHUTDOWN AND
IN
SHUTDOWN AND
IN
LT3491
LT3491
CTRL
GND
CTRL
GND
CAP
LED
CAP
LED
U
R
10Ω
SENSE
R
10Ω
3491 TA05a
SENSE
3491 TA04a
C2
1µF
C2
1µF
80
75
70
65
60
55
50
45
40
35
80
75
70
65
60
55
50
45
40
35
0
0
V
3 LEDs
V
5 LEDs
IN
IN
2
2
= 3.6V
= 3.6V
4
4
LED CURRENT (mA)
LED CURRENT (mA)
6
6
Efficiency
Efficiency
8
8
10
10
12 14 16 18
12 14 16 18
3491 TA04b
3491 TA05b
20
20
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