The LTC4053EDD-4.2#TRPBF is a highly integrated battery charger IC designed by Linear Technology, now part of Analog Devices, for charging single-cell lithium-ion batteries. This compact and efficient power management solution is ideal for portable electronic devices where space and power conservation are critical.

Key Features

• Charge Voltage: Specifically designed to charge batteries to a voltage of 4.2V, ensuring a full charge for a standard single-cell Li-Ion battery.
• Charge Current: Programmable charge current up to 800mA, allowing for flexibility in battery charging times.
• Package: Comes in a small, 10-lead (3mm x 3mm) DFN package, making it suitable for compact PCB layouts.
• Thermal Regulation: Protects the IC during high power or high ambient conditions by automatically reducing charge current.
• No External MOSFET: The internal PowerPak™ MOSFET eliminates the need for an external MOSFET, reducing the external component count and simplifying the design.
• Presets for Preconditioning and Termination: Includes presets for preconditioning of deeply discharged cells and automatic charge termination, enhancing battery life and performance.
• Charge Status Output: Provides a status output pin that can be used to indicate charge status via an LED or interface with a microcontroller.

Applications

The LTC4053EDD-4.2#TRPBF is suitable for a wide range of applications, including:

• Portable medical devices
• Handheld instruments
• Smartphones and PDAs
• Portable media players
• Wearable technology
• Bluetooth devices

Advantages

With its integrated features and compact design, the LTC4053EDD-4.2#TRPBF offers several advantages for designers:

• Minimized component count and board space usage
• Fast charge times with programmable current
• Enhanced battery life and safety with integrated thermal regulation and charge termination
• Easy-to-monitor charge status, simplifying user interface design

This product from Linear Technology provides a comprehensive charging solution that is both reliable and easy to integrate into various portable applications, ensuring that devices remain powered efficiently and safely.