LT3518IFE#PBF Linear Technology, LT3518IFE#PBF Datasheet - Page 7
LT3518IFE#PBF
Manufacturer Part Number
LT3518IFE#PBF
Description
IC LED DRIVR AUTOMOTIVE 16-TSSOP
Manufacturer
Linear Technology
Type
Automotiver
Datasheet
1.LT3518IUFPBF.pdf
(20 pages)
Specifications of LT3518IFE#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%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
BLOCK DIAGRAM
PV
IN
SHDN
CTRL
FB
V
SYNC
SS
R
C
T
1.01V
+
ISP
R
1V
SENSE
X10
1V
V
–
IN
ISN
–
+
+
+
–
10µA
CURRENT
SENSE
AMPLIFIER
A1
A2
+
–
1V
A5
+
+
–
A6
+
+
ADJUST
FREQ
SS
C
A3
IN
Figure 1. Buck Mode LED Driver
AMPLIFIER
Q2
ERROR
MOSFET DRIVER
2.5MHz TO 250kHz
V
TG
ISP
OSCILLATOR
GENERATOR
V
ISP
– 7V
RAMP
LED ARRAY
–
+
V
COMPARATOR
IN
A4
PWM
TGEN
R
S
Q
C
FILT
PWM
2V
–
+
MAIN SWITCH
DRIVER
A7
A8
100µA
+
–
SW SW
V
IN
LT3518
Q1
MAIN
SWITCH
V
GND
REF
3518 F01
3518fd
7