Linear Technology LT3518
Full-Featured LED Driver
| Part No. | LT3518 |
|---|---|
| Datasheet | LT3518 Download |
| Manufacturer |  Linear Technology |
| Description | Full-Featured LED Driver |
| Buy | Stock & Price |
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 PackagesAPPLICATIONS
n Display Backlighting n Automotive and Avionic Lighting n Illumination n ScannersDESCRIPTION
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 allows optimization of the external components for efficiency or component size.
