Analog Devices Inc. LTC4155EUFD#TRPBF

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Product attributes Property Value
Manufacturer Analog Devices Inc.
Product Series PowerPath™
Packaging Cut Tape (CT) | Tape & Reel (TR)
Battery Chemistry Lithium Ion/Polymer
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features -
Fault Protection Over Voltage
Charge Current - Max 3.7A
Battery Pack Voltage 4.2V
Voltage - Supply (Max) 5.5V
Interface I2C, USB
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 28-WFQFN Exposed Pad
Supplier Device Package 28-QFN (4x5)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LTC4155EUFD is a high-current, USB-compatible battery charger IC from Analog Devices for single-cell Lithium Ion/Polymer batteries. It delivers a programmable charge current up to 3.7A at a 4.2V battery voltage. Featuring an I2C interface for digital control and an integrated Over Voltage protector, this charger is housed in a compact 28-WFQFN package. It is well-suited for fast-charging portable electronics and industrial devices requiring robust thermal performance.

  • Fast Charging: Supports up to 3.7A charge current, significantly reducing charge time for high-capacity single-cell Li-Polymer batteries.
  • Digital Control: I2C interface enables precise monitoring and programming of charging parameters for optimized system integration.
  • Wide Temperature Operation: Rated for -40°C to 125°C junction temperature, ensuring reliable performance in harsh environments.
  • Integrated Protection: Built-in Over Voltage protection safeguards the battery and system from fault conditions.

High-Capacity Portable Electronics

Charge single-cell Lithium Ion/Polymer batteries in tablets and ultrabooks at up to 3.7A, reducing charge time for large-capacity cells.

USB-Powered Devices

With a USB interface, it can draw power from standard USB ports while using I2C for advanced system monitoring and control.

Industrial Handheld Terminals

Operates over a -40°C to 125°C junction temperature range, making it suitable for rugged handheld scanners and field equipment.

Medical Monitoring Devices

Provides a reliable 4.2V charge for single-cell Li-Poly packs used in wearable and portable medical devices, with overvoltage protection for safety.

Compact IoT Hubs

The 28-WFQFN package allows for a compact PCB layout in space-constrained IoT gateways and smart home controllers.

Q: What battery chemistry does the LTC4155EUFD support?
A: It is designed for Lithium Ion/Polymer batteries.
Q: How many battery cells can it charge?
A: It supports a single cell (1) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 3.7A.
Q: What is the battery pack voltage?
A: The battery pack voltage is 4.2V.
Q: What fault protection is included?
A: It includes Over Voltage protection.
Q: What interface does it use?
A: It uses both I2C and USB interfaces.
Base Product Number : LTC4155EUFD
28-WFQFN 3.7A 4.2V Battery Charger I2C Lithium Ion/Polymer USB Battery Charger
Q: What battery chemistry does the LTC4155EUFD support?
A: It is designed for Lithium Ion/Polymer batteries.
Q: How many battery cells can it charge?
A: It supports a single cell (1) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 3.7A.
Q: What is the battery pack voltage?
A: The battery pack voltage is 4.2V.
Q: What fault protection is included?
A: It includes Over Voltage protection.
Q: What interface does it use?
A: It uses both I2C and USB interfaces.