LT3518EFE#PBF Linear Technology, LT3518EFE#PBF Datasheet - Page 13

• Manufacturer Part Number: LT3518EFE#PBF
• Description: IC LED DRIVR AUTOMOTIVE 16-TSSOP
• Manufacturer: Linear Technology
• Type: Automotiver

Specifications of LT3518EFE#PBF

• 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-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 2.8A
• Internal Switch(s): Yes
• Efficiency: 88%
• Led Driver Application: Display Backlighting, Automotive And Avionic Lighting
• No. Of Outputs: 1
• Output Current: 2.3A
• Output Voltage: 45V
• Input Voltage: 3V To 30V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL APPLICATIONS
V
5V
IN
500mA, 5V to 12V Boost Converter with Accurate Input Current Limit
PV
3.3V
24V
V
C1: KEMET C0805C225K4RAC
C2: MURATA GRM31MR71E225KA93
C3: MURATA GRM32DR71E106KA12B
C4, C5: MURATA GRM21BR71H104KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-150M
LEDS: LUXEON K2 (WHITE)
M1: ZETEX ZXMP6A13GTA
IN
IN
C1: KEMET C0805C225K4RAC
C2: KEMET C1206C106K4RAC
C3: MURATA GRM21BR71H104KA01B
C4: MURATA GCM033R71A103KA03
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-4R3N
2.2µF
PWM
V
REF
C1
SHDN
C2
2.2µF
C2
2.2µF
10nF
Buck Mode 1.5A LED Driver
C4
V
CTRL
PWM
SHDN
TGEN
V
10k
R3
V
SHDN
CTRL
PWM
SYNC
ISP
IN
REF
TGEN
IN
ISP
V
R
50mΩ
C
SENSE
TG
R
68m
0.1µF
SENSE
V
LT3518
LT3518
REF
C4
GND
ISN
ISN
4.3µH
V
L1
C
SS
M1
TG
GND
SYNC
SW
FB
R
SW
SS
C3
0.1µF
FB
R
T
T
D1
1.5A
R
16.9k
1MHz
R
6.04k
2MHz
T
T
C5
0.1µF
R1
549k
R2
49.9k
L1
15µH
3518 TA03a
C3
10µF
3518 TA02a
D1
C2
10µF
V
12V
500mA
OUT
5V/DIV
1A/DIV
1A/DIV
PWM
I
LED
I
L
PV
f
I
90
70
60
50
80
OSC
LED
IN
0
= 1.5A
= 1MHz
1000:1 PWM Dimming at 120Hz
= 24V
100
Efficiency
200
I
LOAD
2µs/DIV
(mA)
300
400
3518 TA03b
3518 TA02b
500
LT3518
13
3518fd