LT3519EMS#PBF Linear Technology, LT3519EMS#PBF Datasheet - Page 14

• 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: -

LT3519/LT3519-1/LT3519-2
TYPICAL APPLICATIONS
14
OPENLED
0.1A/DIV
10V/DIV
10V/DIV
V
I
OUT
LED
V
IN
= 12V
Waveform for Open LED
6V TO 24V
50μs/DIV
V
IN
C1
1μF
C1: TDK C3216X7R1H105K
C2: TDK C3216X7R1H105K
C3: TDK C3216X7R1E475K
L1: COILTRONICS DR73-470-R
Q1: DIODES FMMT555 PNP
NOTE:
V
V
V
V
IN
IN
IN
OUT
= 8.2V RISING TURN ON
= 6.2V FALLING UVLO
> 7V FULL LED CURRENT AND FOLDBACK BELOW
– V
100k
IN
3519 TA03b
Buck-Boost Mode 150mA LED Driver
18.5V OVERVOLTAGE PROTECTION
1M
210k
1M
243k
SHDN/UVLO
V
PWM
CTRL
V
OPENLED
REF
IN
16V LED 150mA
47μH
L1
LT3519
GND
SW
CATHODE
ANODE
ISN
ISP
FB
82
80
78
76
74
72
70
66
68
6
Q1
R
1.65Ω
SENSE
357k
24.3k
3519 TA03a
9
10k
Effi ciency vs V
12
V
C3
4.7μF
V
OUT
IN
15
(V)
C2
1μF
18
IN
21
3519 TA03c
24
3519fa