LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode

Features
  • Up to 3000:1 True Color PWM™ Dimming
  • Wide Input Voltage Range Operation from 3V to 30V Transient Protection to 40V
  • Rail-to-Rail LED Current Sense from 0V to 45V
  • 45V, 750mA Internal Switch
  • Internal Schottky Diode
  • Constant-Current and Constant-Voltage Regulation
  • Boost, SEPIC, Buck-Boost Mode or Buck Mode Topology
  • Open LED Protection and Open LED Status Pin
  • Programmable Undervoltage Lockout with Hysteresis
  • Fixed Frequency: 400kHz (LT3519), 1MHz (LT3519-1), 2.2MHz (LT3519-2)
  • Internal Compensation
  • CTRL Pin Provides Analog Dimming
  • Low Shutdown Current: <1μA
  • 16-Lead MSOP Package
Typical Application

Applications
  • Automotive
  • Industrial
  • Constant Current Source
  • Current Limited Constant Voltage Source
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3519EMS-1#PBFMS-16E$3.57$2.50
LT3519EMS-1#TRPBFMS-16E$2.56
LT3519EMS-2#PBFMS-16E$3.57$2.50
LT3519EMS-2#TRPBFMS-16E$2.56
LT3519EMS#PBFMS-16E$3.57$2.50
LT3519EMS#TRPBFMS-16E$2.56
LT3519IMS-1#PBFMS-16I$4.20$2.94
LT3519IMS-1#TRPBFMS-16I$3.00
LT3519IMS-2#PBFMS-16I$4.20$2.94
LT3519IMS-2#TRPBFMS-16I$3.00
LT3519IMS#PBFMS-16I$4.20$2.94
LT3519IMS#TRPBFMS-16I$3.00
Demo Boards
Part NumberDescriptionPrice
DC1482ALT3519EMS Demo Board | Boost LED Driver with Integrated Schottky Diode, 6V ≤ VIN ≤ 30V, VLED = 38V @ 100mA$100.00
DC1612A-ALT3519EMS-1 Demo Board | SEPIC LED Driver, 1MHz fSW, 6V ≤ VIN ≤ 24V, VLED = 16V @ 150mA$100.00
DC1612A-BLT3519EMS-2 Demo Board | SEPIC LED Driver, 2.2MHz fSW, 6V ≤ VIN ≤ 24V, VLED = 16V @ 150mA$100.00
Datasheet
Reliability Data
LT Journal
Press Release
LTspice
Related Product
LT3519/LT3519-1/LT3519-2 - LED Driver with Integrated Schottky Diode
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September 2009 - 4W LED Driver Includes Power Switch, Compensation Components and Schottky in 16-Pin MSOP
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LT3519 Footprints and Symbols
LT3519 Demo Circuit - 400KHz SEPIC LED Driver (12V to 10x 3.4V LEDs @ 100mA)
LT3519-1 Demo Circuit - 1MHz SEPIC LED Driver (12V to 4x 3.4V LEDs @ 150mA)
LT3519-2 Demo Circuit - 2.2MHz SEPIC LED Driver (12V to 4x 3.4V LEDs @ 150mA)