The LTC4078XEDD#PBF is a highly versatile and efficient dual-input lithium-ion/polymer battery charger integrated circuit from Linear Technology. This compact, feature-rich device is designed to charge single-cell Li-Ion batteries from two distinct power sources: a USB port or a wall adapter.

Key Features:

• Wide Input Voltage Range: The LTC4078XEDD#PBF can handle an input voltage range from 4.25V to 5.5V, making it suitable for a variety of USB-powered applications.
• Automatic Input Selection: The charger automatically prioritizes the input source, seamlessly switching between a USB port and a wall adapter without interrupting the charging process.
• Adjustable Charge Current: Users can set the charge current up to 950mA with a single resistor, allowing for flexibility in charging speed based on the application's requirements.
• Thermal Regulation: To ensure safety and protect the battery, the LTC4078XEDD#PBF includes thermal feedback that regulates the charge current to maintain a safe temperature during operation.
• Charge Status Indicators: Integrated status pins provide real-time feedback about the charging process, which can be used to light LEDs for visual indication.

Applications:

• Portable Medical Devices
• Handheld Instruments
• USB-Powered Gadgets
• Personal Media Players
• Bluetooth Devices

The LTC4078XEDD#PBF offers a compact solution in a low-profile (0.75mm) 10-lead DFN package, making it an excellent choice for space-constrained applications. Its precision end-of-charge control ensures the battery is accurately charged to full capacity, while the built-in safety features, such as overvoltage protection, under voltage lockout, and automatic recharge, provide peace of mind for designers and end-users alike.

With its advanced features and robust design, the LTC4078XEDD#PBF stands out as a high-performance, reliable choice for single-cell Li-Ion battery charging needs.