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LT3580

Features: · 2A Internal Power Switch· Adjustable Switching Frequency· Single Feedback Resistor Sets VOUT· Synchronizable to External Clock· High Gain SHDN Pin Accepts Slowly Varying Input Signals· Wide Input Voltage Range: 2.5V to 32V· Low VCESAT Switch: 300mV at 1.5A (Typical)· Integrated Soft-St...

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SeekIC No. : 004401125 Detail

LT3580: Features: · 2A Internal Power Switch· Adjustable Switching Frequency· Single Feedback Resistor Sets VOUT· Synchronizable to External Clock· High Gain SHDN Pin Accepts Slowly Varying Input Signals· W...

LT3580 Data Sheet

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Part Number:
LT3580
Supply Ability:
5000

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

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Product Details

Description



Features:

· 2A Internal Power Switch
· Adjustable Switching Frequency
· Single Feedback Resistor Sets VOUT
· Synchronizable to External Clock
· High Gain SHDN Pin Accepts Slowly Varying Input Signals
· Wide Input Voltage Range: 2.5V to 32V
· Low VCESAT Switch: 300mV at 1.5A (Typical)
· Integrated Soft-Start Function
· Easily Confi gurable as a Boost or Inverting Converter
· User Confi gurable Undervoltage Lockout (UVLO)
· Tiny 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages


Application

· VFD Bias Supplies
· TFT-LCD Bias Supplies
· GPS Receivers
· DSL Modems
· Local Power Supply


Pinout

Connection Diagram


Specifications

VIN Voltage .................................................0.3V to 32V
SW Voltage ................................................ 0.4V to 42V
RT Voltage.................................................... 0.3V to 5V
SS and FB Voltage .....................................0.3V to 2.5V
VC Voltage ...................................................0.3V to 2V
SHDN Voltage ............................................0.3V to 32V
SYNC Voltage ............................................0.3V to 5.5V
Operating Junction Temperature Range
LT3580E (Notes 2, 5) .........................     40 to 125
LT3580I (Notes 2, 5) ..........................     40 to 125
Storage Temperature Range ...................65 to 150


Description

The LT®3580 is a PWM DC/DC converter containing an internal 2A, 42V switch. The LT3580 can be confi gured as either a boost, SEPIC or inverting converter. Capable of generating 12V at 550mA or 12V at 350mA from a 5V input, the LT3580 is ideal for many local power supply designs.

The LT3580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT3580 can be synchronized to an external clock. The free running or synchronized switching frequency range of the part can be set between 200kHz and 2.5MHz.

The LT3580 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.

Additional features such as frequency foldback and softstart are integrated. The device is available in tiny 3mm * 3mm 8-lead DFN and 8-lead MSOP packages.




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