DESCRIPTION

The LT®3479 is a current mode, fixed frequency step-up DC/DC converter with an internal 3A, 42V switch. Efficiencies of up to 89% can be achieved in typical applications. It features a programmable soft-start function to limit inductor current during start-up and inrush current protection to protect the LT3479 during shorts and line transients.

FEATURES

Wide Input Voltage Range: 2.5V to 24V
3A, 42V Internal Switch
High Effi ciency Power Conversion: Up to 89%
Soft-Start
Frequency Set by External Resistor: 200kHz to 3.5MHz
Protection Against Input Short Circuits and Hot Plugging
Low VCESAT Switch: 0.3V at 2.5A (Typical)
Capable of Positive and Negative Outputs
Available in Thermally Enhanced 14-Lead (4mm × 3mm) DFN and 16-Lead TSSOP Packages

APPLICATIONS

High Power LED Driver
DSL Modems
Distributed Power