Linear Technology LTC4002ES8-4.2#PBF Battery Charger IC

The LTC4002ES8-4.2#PBF is a high-performance, standalone linear battery charger IC designed by Linear Technology to specifically charge lithium-ion batteries. This advanced integrated circuit (IC) is optimized to provide a safe and efficient charging solution for single-cell lithium-ion batteries with a full-charge voltage of 4.2 volts.

The LTC4002ES8-4.2#PBF operates from a supply voltage range of 6V to 28V, making it versatile for various applications. It is housed in a compact ES8 package, which is conducive for space-constrained applications. With its precision end-of-charge control, the charger IC ensures that the battery is charged accurately to its peak capacity without overcharging, which can extend the battery's lifespan and maintain its performance.

Key features of the LTC4002ES8-4.2#PBF include:

• Automatic recharge feature that initiates a new charging cycle if the battery voltage falls below a preset level, ensuring the battery remains fully charged.
• Charge current is programmable with a single external resistor, allowing for customization based on specific battery requirements.
• Thermal regulation maximizes the charge rate without the risk of overheating.
• No external MOSFET, sense resistor, or blocking diode is required, simplifying the design and reducing the overall solution footprint.
• It includes a charge status output that can drive an external LED, providing a visual indication of the charging process.

The LTC4002ES8-4.2#PBF is equipped with multiple safety features to protect both the battery and the charger itself. These include automatic shutdown if the input voltage exceeds safe levels, a timer for termination to prevent overcharging, and a battery temperature sensing input that can be used to monitor the battery temperature and prevent charging if unsafe temperatures are detected.

Overall, the LTC4002ES8-4.2#PBF from Linear Technology is a reliable and efficient choice for designers looking for a dedicated charging solution for lithium-ion batteries in portable electronic devices, medical equipment, and industrial applications. Its ease of use, combined with its robust safety features, makes it an ideal choice for ensuring the longevity and reliability of battery-powered products.