Linear Technology LTC4120EUD-4.2#TRPBF Wireless Power Receiver and Battery Charger

The LTC4120EUD-4.2#TRPBF is an innovative solution for wireless power transfer and battery charging applications, designed by Linear Technology. This compact and efficient component is ideal for portable devices where conventional charging methods are not feasible or desired. It combines the convenience of wireless charging with the reliability and performance expected from Linear Technology products.

Key Features:

• Wireless Power Receiver: The LTC4120EUD-4.2#TRPBF is capable of receiving power wirelessly from a compatible transmitter, eliminating the need for physical connectors and enabling charging in environments where traditional methods are impractical.
• Integrated Battery Charger: The device features an onboard battery charger that provides a constant-charge voltage algorithm with a 4.2V float voltage, suitable for charging single-cell lithium-ion batteries.
• Dynamic Harmonization Control: This feature allows the LTC4120 to adjust the resonant frequency of its receiving circuit to align with the transmitter for optimized power transfer efficiency.
• PowerPath Control: The LTC4120 can seamlessly manage power flow between the wireless power receiver, the battery, and the load, ensuring stable operation of the end device.
• AutoResonant Switching: The device employs autoresonant switching to maintain peak efficiency across various conditions and distances between the transmitter and receiver coils.

Applications:

The LTC4120EUD-4.2#TRPBF is versatile and can be used in a wide range of applications, including but not limited to:

• Handheld Medical Devices
• Portable Instruments
• Wearable Technology
• Wireless Sensors and Beacons

Technical Specifications:

• Input Voltage Range: 4.2V
• Charge Current: Up to 400mA
• Package: 16-Lead (3mm × 3mm) QFN
• Operating Temperature Range: -40°C to +125°C

The LTC4120EUD-4.2#TRPBF is a testament to Linear Technology's commitment to innovation in power management solutions. It offers designers a flexible and efficient way to incorporate wireless charging capabilities into their products, enhancing the user experience and enabling new possibilities in device design and functionality.