LT3519EMS#PBF Linear Technology, LT3519EMS#PBF Datasheet - Page 7

• 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: -

BLOCK DIAGRAM
R1
R2
14
13
15
4
NOTE: THE MAXIMUM ALLOWED Q4 COLLECTOR CURRENT I
CTRL
FB
SHDN/UVLO
V
REF
2.2μA
Q3
11
+
2V
ISP
R
SENSE
1.22V
1.22V
4
1.1V
100mV
–
+
–
12
–
+
ISN
A6
–
+
+
+
–
+
–
A1
A2
140μA
G4
LED ARRAY
V
IN
V
Q2
IN
+
+
BANDGAP
AMPLIFIER
92k
ERROR
A3
BIAS
AND
Q4
IS 2mA.
3
PWM
R
OSCILLATOR
GENERATOR
C
C
PWM
C
RAMP
–
+
LT3519/LT3519-1/LT3519-2
A4
COMPARATOR
C
OUT
PWM
10
CATHODE
R
G1
S
D1
Q
1.16V
FB
7
ANODE
G2
+
–
MAIN SWITCH
A5
DRIVER
G3
+
–
6
1, 8, 9, 16
OPENLED
Q4
SW
Q1
MAIN
SWITCH
R
S
GND
V
I
Q4
3519 BD
L1
IN
2
5
3519fa
7
C
V
IN
IN