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LTC3538

Features: `Regulated Output with Input Voltages Above, Below, or Equal to the Output`800mA Continuous Output Current from a Single Lithium-Ion/Polymer Cell`Single Inductor` 1.8V to 5.25V VOUT Range`2.4V to 5.5V VIN Range`1MHz Fixed Frequency Operation`Output Disconnect in Shutdown`35A Quiesecent C...

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SeekIC No. : 004402277 Detail

LTC3538: Features: `Regulated Output with Input Voltages Above, Below, or Equal to the Output`800mA Continuous Output Current from a Single Lithium-Ion/Polymer Cell`Single Inductor` 1.8V to 5.25V VOUT Range`...

LTC3538 Data Sheet

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Part Number:
LTC3538
Supply Ability:
5000

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

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Product Details

Description



Features:

`Regulated Output with Input Voltages Above, Below, or Equal to the Output
`800mA Continuous Output Current from a Single Lithium-Ion/Polymer Cell
`Single Inductor
` 1.8V to 5.25V VOUT Range
`2.4V to 5.5V VIN Range
`1MHz Fixed Frequency Operation
`Output Disconnect in Shutdown
`35A Quiesecent Current in Burst Mode Operation
`<5A Shutdown Current
`Internal Soft-Start
`Small, Thermally Enhanced 8-Lead (2mm x 3mm) DFN package


Application

·Miniature Hard Disk Drives
·MP3 Players
·Digital Cameras
·Cellular Handsets
·PDAs, Handheld PC
·GPS Receivers


Pinout

Connection Diagram


Specifications

VIN,VOUT Voltage .......................................... 0.3V to 6V
SW1,SW2 Voltage
DC ................................................................. 0.3V to 6V
Pulsed < 100ns ............................................. 0.3V to 7V
BURST, FB, VC Voltage ................................... 0.3V to 6V
Operating Temperature (Note 2)................. 40 to 85
Maximum Junction Temperature (Note 3).................. 125
Storage Temperature Range ..................... 65 to 125


Description

The LTC®3538 is a highly effi cient, low noise, buck-boost DC/DC converter that operates from input voltages above, below, and equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for single Lithium Ion or multicell Alkaline or NiMH applications where the output voltage is within the battery voltage range.

The LTC3538 is suited for use in Micro Hard Disk Drive (HDD) applications with its 800mA current capability. Burst Mode® operation provides high effi ciency at light loads.

The LTC3538 includes two 0.17 N-channel and two 0.2 P-channel MOSFET switches. Operating frequency is internally set to 1MHz to minimize solution footprint while maximizing effi ciency. Other features include <5A shutdown current, internal soft-start, short circuit protection and thermal shutdown.

The LTC3538 is available in a low profi le (0.75mm), thermally enhanced 8-lead (2mm * 3mm) DFN package.




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