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LTC4040 - 2.5A Battery Backup Power Manager

Description

The LTC®4040 is a complete 3.5V to 5.5V supply rail battery backup system.

It contains a high current step-up DC/DC regulator to back up the supply from a single-cell Li-Ion or LiFePO4 battery.

When external power is available, the step-up regulator operates in reverse as a stepdown battery charger.

Features

  • nn Step-Up Backup Supply and Step-Down Battery Charger nn 6.5A Switches for 2.5A Backup from 3.2V Battery nn Input Current Limit Prioritizes Load Over Charge Current nn Input Disconnect Switch Isolates Input During Backup nn Automatic Seamless Switch-Over to Backup Mode nn Input Power Loss Indicator nn System Power Loss Indicator nn Pin Selectable Battery: Li-Ion (3.95V/4.0V/4.05V/4.1V) or LiFePO4 (3.45V/3.5V/3.55V/3.6V) nn Optional OVP Circuitry Protects Device to >60V nn Constant Frequency Ope.

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Datasheet preview – LTC4040

Datasheet Details

Part number LTC4040
Manufacturer Linear Technology
File Size 1.33 MB
Description 2.5A Battery Backup Power Manager
Datasheet download datasheet LTC4040 Datasheet
Additional preview pages of the LTC4040 datasheet.

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Full PDF Text Transcription

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LTC4040 2.5A Battery Backup Power Manager Features nn Step-Up Backup Supply and Step-Down Battery Charger nn 6.5A Switches for 2.5A Backup from 3.2V Battery nn Input Current Limit Prioritizes Load Over Charge Current nn Input Disconnect Switch Isolates Input During Backup nn Automatic Seamless Switch-Over to Backup Mode nn Input Power Loss Indicator nn System Power Loss Indicator nn Pin Selectable Battery: Li-Ion (3.95V/4.0V/4.05V/4.1V) or LiFePO4 (3.45V/3.5V/3.55V/3.6V) nn Optional OVP Circuitry Protects Device to >60V nn Constant Frequency Operation nn Low Profile (0.
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