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ADI LTC4040EUFD#TRPBF product image
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ADI LTC4040EUFD#TRPBFRoHS

Manufacturer
ADI
MPN
LTC4040EUFD#TRPBF
LCSC Part #
C687163
Packaging
VQFN-24-EP(4x5)
Customer #
Key Attributes
2.5A battery backup power management system
Datasheetpdf iconADI LTC4040EUFD#TRPBF
In-Stock: 2,343
2,343 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 10.1119$ 7.9884$ 7.99
10+$ 8.831$ 6.9765$ 69.77
30+$ 8.0482$ 6.3581$ 190.74
100+$ 7.3939$ 5.8412$ 584.12
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Battery Management
ManufacturerADI
PackagingVQFN-24-EP(4x5)
Operating Temperature-40℃~+125℃
0V Battery ChargeNot supported
Operating Voltage3.5V~5.5V
Type of BatteryLithium Battery;LiFePO4 Battery
The Chip TypeCharging IC
Charge Current - Max2.5A
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The LTC4040 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 step-down battery charger. The LTC4040's adjustable input current limit function reduces charge current to protect the main supply from overload while an external disconnect switch isolates the external supply during backup. When the input supply drops below the adjustable PFI threshold, the 2.5A boost regulator delivers power from the battery to the system output. An optional input overvoltage protection (OVP) circuit protects the LTC4040 from high voltage damage at the VIN pin. One logic input selects either the Li-Ion or the LiFePO4 battery option, and two other logic inputs program the battery charge voltage to one of four levels suitable for backup applications. The LTC4040 is available in a low profile (0.75mm) 24-Lead 4mm × 5mm QFN package.

Features

AI Translation
  • Step-Up Backup Supply and Step-Down Battery Charger
  • 6.5A Switches for 2.5A Backup from 3.2V Battery
  • Input Current Limit Prioritizes Load Over Charge Current
  • Input Disconnect Switch Isolates Input During Backup
  • Automatic Seamless Switch-Over to Backup Mode
  • Input Power Loss Indicator
  • System Power Loss Indicator
  • Pin Selectable Battery: Li-Ion (3.95V/4.0V/4.05V/4.1V) or LiFePO4 (3.45V/3.5V/3.55V/3.6V)
  • Optional OVP Circuitry Protects Device to >60V
  • Constant Frequency Operation
  • Low Profile (0.75mm) 24-Lead 4mm × 5mm QFN Package

Applications

AI Translation
  • Fleet and Asset Tracking
  • Automotive GPS Data Loggers
  • Automotive Telematics Systems
  • Toll Collection Systems
  • Security Systems
  • USB Powered Devices