Datasheet Analog Devices LT3479EDE#TRPBF — 数据表

LT3479
3A, Full Featured DC/DC
Converter with Soft-Start
and Inrush Current Protection
FEATURES DESCRIPTION n 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.
Both inputs of the error amplifier are available to the user
allowing positive and negative output voltages. Through
an external resistor, the user can program the switching frequency from 200kHz to 3.5MHz. The low profile
(0.75mm) 14-pin, 4mm × 3mm DFN package provides
excellent thermal performance in a small footprint. The
LT3479 is also available in a thermally enhanced 16-pin
TSSOP package. Wide Input Voltage Range: 2.5V to 24V
3A, 42V Internal Switch
High Efficiency 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) …