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LT3518

Linear Technology
Part Number LT3518
Manufacturer Linear Technology
Description Full-Featured LED Driver
Published Jun 22, 2009
Detailed Description LT3518 Full-Featured LED Driver with 2.3A Switch Current FEATURES n 3000:1 True Color PWM™ Dimming Ratio n 2.3A, 45V In...
Datasheet PDF File LT3518 PDF File

LT3518
LT3518

Overview
LT3518 Full-Featured LED Driver with 2.
3A Switch Current FEATURES n 3000:1 True Color PWM™ Dimming Ratio n 2.
3A, 45V Internal Switch n 100mV High Side Current Sense n Open LED Protection n Adjustable Frequency: 250kHz to 2.
5MHz n Wide Input Voltage Range: Operation from 3V to 30V Transient Protection to 40V n Operates in Boost, Buck Mode and Buck-Boost Mode n Gate Driver for PMOS LED Disconnect n Constant-Current and Constant-Voltage Regulation n CTRL Pin Provides 10:1 Analog Dimming n Low Shutdown Current: <1μA n Available in (4mm × 4mm) 16-Lead QFN and 16-Pin TSSOP Packages APPLICATIONS n Display Backlighting n Automotive and Avionic Lighting n Illumination n Scanners DESCRIPTION The LT®3518 is a current mode DC/DC converter with an internal 2.
3A, 45V switch specifically designed to drive LEDs.
The LT3518 operates as a LED driver in boost, buck mode and buck-boost mode.
It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or consta...


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