The LTC4064EMSE from Linear Technology is a highly integrated solution for lithium-ion/polymer battery charging and management. Designed with precision and efficiency in mind, this standalone linear charger is capable of charging a single cell with a programmable charge current up to 800mA. The LTC4064EMSE is housed in a compact MSOP-10 package, making it ideal for space-constrained portable applications.

Key Features

• Adjustable Charge Current: Users can set the charge current from 50mA to 800mA through a single external resistor, providing flexibility for various battery capacities and thermal environments.
• Automatic Recharge: The device initiates a new charging cycle if the battery voltage falls below an internal threshold, ensuring the battery remains fully charged.
• No External MOSFET, Sense Resistor, or Blocking Diode Required: The LTC4064EMSE simplifies design and minimizes external component count, which is crucial for compact electronic designs.
• Thermal Regulation: To protect the battery and the charger during high power or high ambient conditions, the LTC4064EMSE includes thermal regulation that automatically reduces charge current.
• Charge Status Output: A status pin provides a simple indication of the charging process, which can be used to display charge status or interface with a microcontroller.

Applications

• Portable Electronics
• Wearable Devices
• Medical and Health Monitoring Devices
• Bluetooth Headsets
• GPS Devices

Technical Specifications

The LTC4064EMSE operates over a wide input voltage range from 4.25V to 8V and can charge batteries with a nominal voltage of 4.2V. Its precision charge voltage accuracy is ±1% and it features an end-of-charge control that signals when the charge current drops below 10% of the programmed value.

Quality and Reliability

Linear Technology is known for its high-quality products, and the LTC4064EMSE is no exception. It is designed for robust operation and long-term reliability, making it a trusted choice for critical and demanding battery charging applications.