LT3491EDC#TRPBF Linear Technology, LT3491EDC#TRPBF Datasheet - Page 2

• Manufacturer Part Number: LT3491EDC#TRPBF
• Description: IC LED DRIVER WHITE BCKLGT 6-DFN
• Manufacturer: Linear Technology
• Type: Backlight, White LEDr

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: -

ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
LT3491
Input Voltage (V
SW Voltage ............................................................. 32V
CAP Voltage ............................................................ 32V
CTRL Voltage .......................................................... 12V
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
V
PARAMETER
Minimum Operating Voltage
LED Current Sense Voltage (V
CAP, LED Pin Bias Current
V
Supply Current
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
Switch Leakage Current
V
V
V
CTRL Pin Bias Current
CAP Pin Overvoltage Protection
Schottky Forward Drop
Schottky Leakage Current
ELECTRICAL CHARACTERISTICS
2
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
CAP
CTRL
CTRL
CTRL
IN
ORDER PART NUMBER
= 3V, V
, V
●
for Full LED Current
to Shut Down IC
to Turn On IC
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
LED
CESAT
LT3491EDC
Common Mode Minimum Voltage
EXPOSED PAD (PIN 7) SHOULD BE CONNECTED TO PCB GROUND
CTRL
= 3V, unless otherwise specified.
T
IN
JMAX
W
) ................................................. 12V
http://www.linear.com/leadfree/
6-LEAD (2mm × 2mm) PLASTIC DFN
= 125°C, θ
GND
SW
V
IN
CAP
1
2
3
DC PACKAGE
– V
JA
TOP VIEW
W W
= 102°C/W, θ
LED
7
)
U
6
5
4
DC PART MARKING
CTRL
LED
CAP
JC
= 20°C/ W
W
CONDITIONS
V
V
V
CTRL = 0V
I
V
V
I
V
LCHJ
SW
SCHOTTKY
CAP
CAP
CAP
SW
CAP
R
= 20V
= 200mA
U
= 16V
= 30V
= 16V, V
= 16V, V
= 30V
= 100mA
LED
LED
U
(Note 1)
= 16V
= 15V, CTRL = 3V
LED Voltage ............................................................ 32V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Maximum Junction Temperature ......................... 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10sec, SC-70) ......... 300°C
ORDER PART NUMBER
LT3491ESC8
GND 2
GND 3
GND 4
T
SW 1
JMAX
8-LEAD PLASTIC SC70
●
●
●
●
●
●
= 125°C, θ
SC8 PACKAGE
TOP VIEW
MIN
190
260
100
2.5
1.8
1.5
88
26
JA
= 270°C/ W
DC PART MARKING
8 CAP
7 LED
6 CTRL
5 V
IN
TYP
200
350
200
100
2.6
2.3
0.1
0.8
20
92
27
8
LBXQ
A
= 25°C.
MAX
210
2.5
2.8
40
10
50
28
4
5
4
UNITS
3491fa
MHz
mV
mA
mA
mV
mV
mV
µA
µA
µA
nA
µA
%
V
V
V
V
V