Linear Technology's LTC4061EDD-4.4#PBF Battery Charger

The LTC4061EDD-4.4#PBF is a highly efficient and versatile single-cell lithium battery charger integrated circuit (IC) designed by Linear Technology, a leader in the design and manufacture of high-performance analog integrated circuits. This IC is specifically tailored for charging single-cell lithium-ion or lithium-polymer batteries with a precision end-of-charge voltage of 4.4V.

Encased in a compact DFN package, the LTC4061EDD-4.4#PBF offers a space-saving solution for portable electronic devices. Its minimalistic design requires only a few external components, making it an ideal choice for space-constrained applications such as personal digital assistants (PDAs), digital cameras, MP3 players, smartphones, and other handheld devices.

Key Features:

• Precision Charging: The LTC4061EDD-4.4#PBF ensures accurate charging of lithium batteries with its precision end-of-charge voltage of 4.4V, which is critical for maximizing battery life and performance.
• Programmable Charge Current: The charge current can be programmed up to 1A, allowing users to tailor the charging to the needs of their specific battery.
• Automatic Recharge: The IC initiates a new charging cycle if the battery voltage falls below an internal threshold, ensuring the battery remains fully charged.
• Thermal Regulation: To prevent overheating, the LTC4061EDD-4.4#PBF includes a thermal regulation feature that reduces charge current during high temperature conditions.
• Charge Status Output: An onboard charge status output provides real-time information about the charging process, which can be used to drive an external LED indicator or interface with a microcontroller.

Protection Features:

• Overvoltage Protection: The IC protects the battery from being overcharged by shutting down the charging process if the input voltage exceeds a safe threshold.
• Undervoltage Lockout: It also ensures safe operation by suspending the charge if the input voltage drops too low, preventing damage to the battery and the charger IC.
• Thermal Shutdown: In extreme temperature conditions, the LTC4061EDD-4.4#PBF will enter thermal shutdown mode to safeguard the IC and the battery.

With its combination of precision, programmability, and protection, the LTC4061EDD-4.4#PBF from Linear Technology stands out as a high-quality charging solution for single-cell lithium batteries, providing reliability and performance for a wide range of portable applications.