LT3518EUF#TRPBF Linear Technology, LT3518EUF#TRPBF Datasheet - Page 16

• Manufacturer Part Number: LT3518EUF#TRPBF
• Description: IC LED DRIVER AUTOMOTIVE 16-QFN
• Manufacturer: Linear Technology
• Type: Automotiver

Specifications of LT3518EUF#TRPBF

• Constant Current: Yes
• Constant Voltage: Yes
• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive, Backlight
• Type - Secondary: White LED
• Frequency: 250kHz ~ 2.5MHz
• Voltage - Supply: 3 V ~ 30 V
• Voltage - Output: 7V
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 2.8A
• Internal Switch(s): Yes
• Efficiency: 88%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL APPLICATIONS
LT3518
16
200mA/DIV
5V/DIV
1A/DIV
PWM
I
LED
I
L1
V
f
I
OSC
LED
8V TO 16V
IN
= 12V
= 300mA
= 1MHz
3000:1 PWM Dimming at 100Hz
V
IN
C1
2.2µF
PWM
1µs/DIV
0.1µF
C4
Boost 300mA LED Driver with LED Open Protection
PWM
TGEN
V
CTRL
SYNC
V
REF
SHDN
C
1MHz
16.9k
R
T
3518 TA06b
V
R
LT3518
IN
T
SS
8.2µH
L1
C3
0.1µF
SW
GND
ISN
ISP
TG
FB
D1
300mA
R1
1M
R2
30.1k
M1
R
330mΩ
SENSE
100
LED1
LED2
LED8
3518 TA06a
90
80
70
60
50
40
30
20
0
C1: KEMET C1206C225K2RAC
C2: TDK C5750X7R1H685M
C3, C4: MURATA GRM21BR71H104KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-8R2N
LEDS: LUXEON I (WHITE)
M1: ZETEX ZXMP6A13GTA
C2
6.8µF
20
PWM DUTY CYCLE (%)
Efficiency
40
60
V
CTRL = V
IN
80
= 12V
3518 TA06c
REF
100
3518fd