LTC1733CS8 - Linear Technology's Standalone Linear Li-Ion Battery Charger

The LTC1733CS8 is a highly integrated battery charging solution designed by Linear Technology, optimized for charging lithium-ion (Li-Ion) batteries. This sophisticated device comes in an 8-lead narrow SO package, offering compactness and reliability for a wide range of portable applications.

One of the key features of the LTC1733CS8 is its standalone operation. This means that it does not require any microcontroller or external control circuitry to manage the charging process. The device automatically transitions through the pre-charge, constant-current, and constant-voltage phases, ensuring that the battery is charged efficiently and safely.

The charger is capable of delivering up to 1A of charge current, which is programmable via an external resistor. This flexibility allows designers to tailor the charge rate to suit various battery capacities and requirements. Additionally, the LTC1733CS8 supports a wide input voltage range, making it suitable for use with a variety of power supplies.

Safety is a paramount concern when it comes to charging Li-Ion batteries, and the LTC1733CS8 addresses this by incorporating multiple safety features. These include automatic recharge, preconditioning of deeply discharged batteries, and a shutdown mode that reduces the supply current to 20µA. Moreover, the charger has built-in thermal regulation to prevent overheating during the charging process.

To provide feedback on the charging process, the LTC1733CS8 includes a charge status output that can be used to drive an LED indicator. This allows users to easily monitor the charging state and know when the battery is fully charged or if there are any charging errors.

Overall, the LTC1733CS8 from Linear Technology is a reliable and efficient solution for charging Li-Ion batteries in portable electronic devices. Its ease of use, combined with its comprehensive set of features, makes it an ideal choice for designers looking to integrate a battery charging function into their projects without the need for complex additional circuitry.