The LTC4078EDD-2 is a highly versatile, dual-input USB compatible lithium-ion/polymer battery charger integrated circuit designed by Linear Technology. This advanced charging solution is perfect for portable electronic devices that require efficient and reliable battery management.

Key Features:

• Dual Input Power Sources: The LTC4078EDD-2 can charge from both USB and a high voltage adaptor, automatically prioritizing the input sources without the need for external control pins.
• Wide Input Voltage Range: It operates across a wide range of input voltages, from 4.35V to 22V, providing flexibility in choosing the power source.
• Adjustable Charging Rate: The charge current is programmable up to 950mA from the USB input and up to 1.5A from the high voltage input, allowing for customized charging profiles.
• High Efficiency: The LTC4078EDD-2 features a high-efficiency, synchronous buck regulator architecture that minimizes heat generation and improves overall power management.
• Thermal Regulation: To ensure safety and reliability, the device includes thermal regulation that reduces the charge current if the internal temperature exceeds a preset threshold.
• Multiple Safety Features: The charger provides a suite of safety features, including automatic recharge, overvoltage protection, and a charge status indicator.
• Compact Package: Housed in a 3mm x 3mm DFN package, the LTC4078EDD-2 is designed to save space on portable device circuit boards.

Applications:

The LTC4078EDD-2 is ideal for a variety of applications that demand efficient power management and a compact footprint. It is commonly used in handheld devices, medical equipment, and any portable battery-powered electronics that utilize single-cell lithium-ion or lithium-polymer batteries.

Conclusion:

With its dual-input design, wide input voltage range, and comprehensive safety features, the LTC4078EDD-2 from Linear Technology stands out as a smart and flexible charging solution for modern portable devices. Its programmable charge rate and high-efficiency performance make it an excellent choice for designers looking to optimize battery life and ensure device longevity.