The LM3420M5-8.4 is a dedicated charging and protection solution for single-cell lithium-ion and lithium-polymer batteries, crafted by the renowned semiconductor manufacturer Texas Instruments. This integrated circuit is specifically designed to manage the delicate charging process of these high-energy batteries, ensuring both safety and efficiency.

Key Features

• Precision Voltage Regulation: The LM3420M5-8.4 provides a precise end-of-charge voltage of 8.4V, which is crucial for maintaining the longevity and performance of lithium-based batteries.
• Automatic Recharge Cycle: Once the battery voltage falls below a certain threshold, the chip initiates a new charging cycle, keeping the battery topped up without overcharging.
• Low Dropout Operation: The device's low dropout voltage enables it to operate effectively even when the input voltage is close to the battery voltage, ensuring a continuous charge.
• Temperature Range: It is designed to function across a wide temperature range, making it suitable for various operating environments.
• Small Form Factor: The SOT-23 package is compact, making it ideal for portable applications where space is at a premium.

Applications

The LM3420M5-8.4 is versatile and can be used in a multitude of applications, including but not limited to:

• Portable electronics such as smartphones, tablets, and digital cameras
• Medical devices that require reliable and consistent battery management
• Uninterruptible power supplies (UPS) for critical systems
• Handheld instrumentation and industrial devices

Technical Specifications

With its combination of precision, reliability, and compact size, the LM3420M5-8.4 from Texas Instruments is an excellent choice for designers looking to incorporate a robust battery charging solution into their next project.