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LT3479

Features: · 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)· Capable of...

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SeekIC No. : 004401088 Detail

LT3479: Features: · 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 ...

LT3479 Data Sheet

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Part Number:
LT3479
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/10/27

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Product Details

Description



Features:

· 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)
· Capable of Positive and Negative Outputs
· Available in Thermally Enhanced 14-Lead (4mm × 3mm) DFN and 16-Lead TSSOP Packages


Application

· High Power LED Driver
· DSL Modems
· Distributed Power


Pinout

Connection Diagram


Specifications

SW, L, VS Voltages .......................................................... 42V
VIN, SHDN Voltages ......................................................... 24V
FBP, FBN, VREF, RT, VC Voltages ......................................... 2V
Junction Temperature .........................................bv.... 125°C
Operating Temperature Range (Note 2) .... 40°C to 85°C
Storage Temperature Range .................... 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
TSSOP ......................................................................... 300°C


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 limitinductor current during start-up and inrush current protectio n 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




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