LT LT3517HFE#PBF

DC DC 稳压器3V30V1.5A（开关）

Overview

The LT3517HFE is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517HFE 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. The switching frequency of LT3517HFE can be synchronized to an external clock signal. The LED current is externally programmable with a 100mV sense resistor. The external PWM input provides up to 5000:1 LED dimming. The CTRL pin provides further 10:1 dimming ratio.

The LT3517HFE is available in the tiny footprint 16-lead QFN (4mm × 4mm) and the 16-pin TSSOP packages. The LT3517HFE provides a complete solution for both constant-voltage and constant-current applications.

Features

True Color PWM™ Series
Available in the 16-TSSOP (0.173, 4.40mm Width) Exposed Pad package
Operating temperature of -40°C~150°C TJ
Frequency of 250kHz~2.5MHz
Supply voltage of 5V

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LT3517HFE#PBF LED Driver ICs applications.

• Stage and Studio lighting
• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps
• Panel lighting
• Down lights