Linear Technology LTC1732EMS-4 Battery Charger IC

The LTC1732EMS-4 is a high-performance, standalone linear battery charger IC designed by Linear Technology, a brand known for its high-quality power management solutions. This particular product is tailored for single-cell lithium-ion batteries, which are widely used in portable electronic devices due to their high energy density and long life cycles. The LTC1732EMS-4 is housed in a compact MSOP-10 package, making it an ideal choice for space-constrained applications.

Key Features

• Precision Charging: The LTC1732EMS-4 ensures accurate charge management with a precision end-of-charge control that terminates the charge cycle when the charge current falls below a preset level.
• Adjustable Charge Current: Users can set the charge current from 150mA to 1A through a single resistor, providing flexibility for different battery capacities and thermal management requirements.
• Charge Current Monitoring: The IC includes a charge current monitor output for charge current monitoring, making it easier to optimize charging profiles or signal to a microcontroller.
• Automatic Recharge: It automatically initiates a new charge cycle if the battery voltage falls below a user-set threshold, ensuring the battery remains fully charged.
• Multiple Safety Features: The device incorporates safety features such as automatic shutdown if the battery temperature gets out of the predefined safe range, as well as overvoltage protection to prevent damage to both the battery and the charger.
• Low Dropout Voltage: The LTC1732EMS-4 operates with a very low dropout voltage, which is beneficial when the input supply is close to the battery voltage, improving charging efficiency.

Applications

The LTC1732EMS-4 is suitable for a wide range of applications, including:

• Portable computers
• Cellular phones
• Medical and fitness devices
• Handheld instruments
• Smart battery packs

With its combination of precision, flexibility, and safety features, the LTC1732EMS-4 from Linear Technology is a reliable choice for designers looking to integrate a robust charging solution into their lithium-ion battery-powered products.