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LTC3422

Features: 700mA Continuous/1A Pulsed Output Current for Li-Ion to 5V Applications Synchronous Rectification: Up to 96% Efficiency True Output Disconnect Inrush Current Limiting Adjustable Automatic Burst Mode® Operation Low Noise, Fixed Frequency Operation from 100kHz to 3MHz 0.5V to 4.5V Inp...

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SeekIC No. : 004402234 Detail

LTC3422: Features: 700mA Continuous/1A Pulsed Output Current for Li-Ion to 5V Applications Synchronous Rectification: Up to 96% Efficiency True Output Disconnect Inrush Current Limiting Adjustable Automatic...

LTC3422 Data Sheet

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Part Number:
LTC3422
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/24

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Product Details

Description



Features:

700mA Continuous/1A Pulsed Output Current for Li-Ion to 5V Applications
Synchronous Rectification: Up to 96% Efficiency
True Output Disconnect
Inrush Current Limiting
Adjustable Automatic Burst Mode® Operation
Low Noise, Fixed Frequency Operation from 100kHz to 3MHz
0.5V to 4.5V Input Range
2.25V to 5.25V Adjustable Output Voltage
Guaranteed 1V Start-Up
Programmable Soft-Start
Synchronizable Oscillator
Low Quiescent Current: 25µA
<1µA Shutdown Current
Anti-Ringing Control
Small (3mm * 3mm * 0.75mm) Thermally Enhanced 10-Pin DFN Package


Application

Wireless Handsets
Handheld Computers
GPS Receivers
MP3 Players


Pinout

Connection Diagram


Specifications

VIN, VOUT, SYNC Voltages ....................... 0.3V to 6V
SS, BURST, SHDN Voltages ...................... 0.3V to 6V
SW Voltage
DC .......................................................... 0.3V to 6V
Pulsed < 100ns ...................................... 0.3V to 7V
Operating Temperature Range
(Notes 2, 5) ..................................... 40°C to 85°C
Storage Temperature Range ......... 65°C to 125°C


Description

The LTC®3422 is a high efficiency, current mode, fixed frequency, step-up DC/DC converter with true output disconnect and inrush current limiting. The part is guaranteed to start up from an input voltage of 1V. The device includes a 0.20Ω N-channel MOSFET switch and a 0.24Ω P-channel MOSFET synchronous rectifier. The output voltage, switching frequency, soft-start time, Burst Mode threshold and loop compensation are all simply programmed using tiny external passive components.

Quiescent current of LTC3422 is only 25µA during Burst Mode operation, maximizing battery life in portable applications. The oscillator frequency can be programmed up to 3MHz and can be synchronized to an external clock applied to the SYNC pin.

Other features include 1µA shutdown, short-circuit protection, anti-ringing control, thermal shutdown and current limit. The LTC3422 is available in a (3mm × 3mm × 0.75mm) 10-pin DFN package.




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