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LTC1473L

Features: Power Path Management for Systems with Multiple DC Sources Switches and Isolates Sources from 3.3V to 10V All N-Channel Switching to Reduce Power Losses and System CostBuilt-In Step-Up Regulator for N-Channel Gate Drive Capacitor Inrush and Short-Circuit Current Limited User-Programmabl...

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SeekIC No. : 004401623 Detail

LTC1473L: Features: Power Path Management for Systems with Multiple DC Sources Switches and Isolates Sources from 3.3V to 10V All N-Channel Switching to Reduce Power Losses and System CostBuilt-In Step-Up Re...

LTC1473L Data Sheet

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Part Number:
LTC1473L
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: 2024/5/31

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Product Details

Description



Features:

Power Path Management for Systems with Multiple DC Sources
Switches and Isolates Sources from 3.3V to 10V
All N-Channel Switching to Reduce Power Losses and System Cost
Built-In Step-Up Regulator for N-Channel Gate Drive
Capacitor Inrush and Short-Circuit Current Limited
User-Programmable Timer Prevents Overdissipation During Current Limiting
Undervoltage Lockout Prevents Operation with Low Inputs
Small Footprint: 16-Pin Narrow SSOP


Application

Portable Computers
 Portable Instruments
Fault Tolerant Computers
Battery-Backup Systems
3.3V/5V Power Management


Pinout

Connection Diagram


Specifications

SENSE+, SENSE , V + .................................. 0.3 to 10V
GA1, GB1, GA2, GB2 ........................................ 0.3 to 20V
SAB1, SAB2 ..................................................... 0.3 to 10V
SW, VGG ......................................................... 0.3 to 20V
IN1, IN2, DIODE ...............................................0.3V to 7V
Junction Temperature (Note 2) ............................. 125°C
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range ................. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................... 300°C


Description

The LTC®1473L provides reliable and efficient switching between two DC power sources. This device drives two external sets of back-to-back N-channel MOSFET switches to route power to the input of a low voltage system.

An internal boost regulator provides the voltage to fully enhance the logic-level N-channel MOSFET switches while an internal undervoltage lock-out circuit keeps the system alive down to 2.8V. The LTC1473L senses current to limit inrush between the batteries and the system supply capacitor during switchover transitions or during fault conditions.

A user-programmable timer of LTC1473L monitors the time the MOSFET switches are in current limit and latches them off when the programmed time is exceeded. A unique "2-diode" logic mode ensures system start-up regardless of which input receives power first.




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