The LTC4058XEDD-4.2#TRPBE is a high-efficiency, standalone linear charger manufactured by Linear Technology, designed specifically for single-cell lithium-ion batteries. This compact and versatile charging solution is ideal for portable electronic devices where space and power efficiency are critical considerations.

Key Features

• Charging Voltage: The charger is preset for a 4.2V charge voltage with an impressive accuracy of ±1%, ensuring the battery is charged to its optimal voltage level, enhancing its lifespan and performance.
• Charge Current: It offers programmable charge current up to 800mA, allowing users to tailor the charging speed to the needs of their specific battery and application.
• Thermal Regulation: To protect the battery and circuitry, the device incorporates thermal regulation, which automatically reduces charge current if the internal temperature of the chip approaches a critical limit.
• Automatic Recharge: The LTC4058XEDD-4.2#TRPBE features an automatic recharge function, initiating a new charge cycle when the battery voltage falls below a preset threshold, thus ensuring the battery remains fully charged over time.
• No External MOSFET: Its internal MOSFET eliminates the need for an external component, reducing the overall design footprint and simplifying the circuit design.
• Charge Status Output: A charge status output pin is provided, which can be used to drive an LED indicator or interface with a microcontroller, giving real-time feedback on the charging process.

Applications

The LTC4058XEDD-4.2#TRPBE is perfectly suited for a variety of applications, including but not limited to:

• Portable medical devices
• Handheld instruments
• Wireless headsets and wearables
• Smartphones and PDAs
• Small robotics

Package and Availability

This product is available in a compact DFN package, which is ideal for space-constrained applications. It is also available in tape and reel packaging, denoted by the #TRPBF suffix, facilitating easy integration into automated manufacturing processes.

Conclusion

The LTC4058XEDD-4.2#TRPBE from Linear Technology stands out as an efficient and reliable solution for single-cell lithium-ion battery charging, with its precision, thermal management, and user-friendly features making it a top choice for designers and manufacturers of modern portable electronics.