LTC4054XES5-4.2#TRPBF - Linear Technology's Standalone Linear Li-Ion Battery Charger

The LTC4054XES5-4.2#TRPBF is a high-quality, efficient single-cell lithium-ion battery charger designed by Linear Technology, a leader in analog integrated circuits. This compact and robust charger is tailored for portable applications and is capable of charging from either a USB port or an AC adapter.

Key Features

• Charge Voltage: Precisely regulated 4.2V output for optimal charging of a single-cell lithium-ion battery.
• Charge Current: Programmable charge current up to 800mA, allowing for quick and efficient charging.
• Integrated Pass Transistor: The inclusion of an internal MOSFET minimizes external component count and simplifies the design process.
• Thermal Regulation: Protects the LTC4054XES5-4.2#TRPBF from overheating by automatically reducing charge current under high temperature conditions.
• No External Sense Resistor: Eliminates the need for an external current sense resistor, further simplifying the design and reducing overall system cost.
• Automatic Recharge: The chip features an automatic recharge function that initiates a new charging cycle once the battery voltage falls below a certain threshold.
• Charge Status Output: Provides a real-time indication of the charging process, which can be used to drive an external LED or interface with a microcontroller.
• Small Form Factor: Available in a compact SOT-23 package, ideal for space-constrained portable applications.

Applications

The LTC4054XES5-4.2#TRPBF is perfect for a wide range of portable electronic devices such as:

• Smartphones and PDAs
• Digital Cameras
• MP3 Players
• Portable Medical Devices
• Handheld Instruments

With its straightforward pin configuration and minimal external components, this integrated circuit provides a simple yet powerful solution for single-cell lithium-ion battery charging. The LTC4054XES5-4.2#TRPBF ensures safe and reliable battery management, which is crucial for maintaining the longevity and performance of portable devices.

Linear Technology's commitment to high-quality design and manufacturing is reflected in this product, making it a top choice for designers looking for a dependable and user-friendly charging solution.