Datasheet Analog Devices LT3477IUF#TRPBF — Datenblatt

LT3477
3A, DC/DC Converter
with Dual Rail-to-Rail
Current Sense
Description Features
Dual 100mV Rail-to-Rail Current Sense Amplifiers
nn Wide Input Voltage Range: 2.5V to 25V
nn 3A, 42V Internal Switch
nn High Efficiency Power Conversion: Up to 93%
nn Drives LEDs in Boost, Buck-Boost or Buck Mode
nn Frequency Set by External Resistor: 200kHz to 3.5MHz
nn Programmable Soft-Start
nn Low V
CESAT Switch: 0.3V at 2.5A
nn Capable of Positive and Negative Output Voltages
(Boost, Inverting, SEPIC, Flyback)
nn Available in Thermally Enhanced 20-Lead
(4mm × 4mm) QFN and 20-Lead TSSOP Packages
nn Applications The LT®3477 is a current mode, 3A DC/DC step-up converter
with dual rail-to-rail current sense amplifiers and an internal
3A, 42V switch. It combines a traditional voltage feedback
loop and two unique current feedback loops to operate
as a constant-current, constant-voltage source. Both current sense voltages are set at 100mV and can be adjusted …