LT3518 - Linear Technology

LT3518 Full-Featured LED Driver

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 constant-voltage source. Programmable switching frequency a.

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 Illuminatio.