LT3519EMS#PBF Linear Technology, LT3519EMS#PBF Datasheet - Page 17

• Manufacturer Part Number: LT3519EMS#PBF
• Description: IC LED DRVR HP CONST CURR 16MSOP
• Manufacturer: Linear Technology
• Type: High Power, Constant Currentr

Specifications of LT3519EMS#PBF

• Constant Current: Yes
• Constant Voltage: Yes
• Topology: PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive
• Frequency: 320kHz ~ 440kHz
• Voltage - Supply: 3 V ~ 30 V
• Mounting Type: Surface Mount
• Package / Case: 16-MSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 980mA
• Internal Switch(s): Yes
• Led Driver Application: Automotive, Notebook And TV Monitor Backlighting
• No. Of Outputs: 1
• Output Current: 750mA
• Output Voltage: 45V
• Input Voltage: 3V To 30V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -

TYPICAL APPLICATIONS
V
OPENLED
IN
0.5A/DIV
10V/DIV
– V
5V/DIV
I
OUT
LED
V
IN
= 15V
10V TO 25V
Waveforms for Open LED
V
IN
25μs/DIV
C1
2.2μF
C1: TDK C3216X7R1E225K
C2: TDK C1608X7R1C105K
Q1: DIODES FMMT555 PNP
L1: COILTRONICS DR73-068-R
100k
Minimum BOM Buck Mode 500mA LED Driver
3519 TA06b
1M
140k
SHDN/UVLO
CTRL
V
PWM
OPENLED
REF
V
IN
LT3519-2
GND
CATHODE
ANODE
ISN
ISP
SW
FB
LT3519/LT3519-1/LT3519-2
6V LED
500mA
V
OUT
84
82
80
78
76
74
72
70
10
L1
6.8μH
0.5Ω
13
Effi ciency vs V
C2
1μF
10k
16
V
IN
(V)
19
Q1
130k
23.2k
3519 TA06a
IN
22
3519 TA06c
25
17
3519fa