LTC4002EDD-8.4#TRPBF - Linear Technology

The LTC4002EDD-8.4#TRPBF is a high-performance, standalone linear battery charger manufactured by Linear Technology, now part of Analog Devices. This sophisticated charger is designed to efficiently manage the charging process for single-cell lithium-ion batteries, which are widely used in portable electronic devices due to their high energy density and long life cycle.

Key Features:

• Charging Voltage: The device is specifically tailored for 8.4V lithium-ion batteries, ensuring precise charging to maximize battery life and performance.
• Charge Current: It provides a programmable charge current up to 2A, which allows for rapid charging of the battery, reducing the time devices spend tethered to a charging source.
• Thermal Regulation: To prevent overheating, the LTC4002EDD-8.4#TRPBF includes a thermal regulation feature that reduces charge current if the internal temperature of the chip exceeds a preset threshold.
• Charge Termination: The charger has an automatic charge termination feature based on the Constant-Current/Constant-Voltage (CC/CV) algorithm, which helps to prevent overcharging and extend the battery's lifespan.
• No External MOSFET: The internal MOSFET eliminates the need for an external one, simplifying the design and reducing the overall footprint of the charging circuit.
• Low Dropout Voltage: It operates with a low dropout voltage, which improves efficiency and allows for charging under a wide range of input voltages.
• Status Indication: The device provides a charge status output that can be used to drive an LED indicator or interface with a microcontroller, giving visual or digital feedback on the charging process.

Applications:

The LTC4002EDD-8.4#TRPBF is ideal for a variety of applications where efficient charging of lithium-ion batteries is critical, including but not limited to:

• Portable Medical Devices
• Handheld Instruments
• Mobile Communications Devices
• Battery Backup Systems

With its compact DFN package and integrated features, the LTC4002EDD-8.4#TRPBF simplifies the design of battery charging circuits while providing robust and reliable performance, making it a preferred choice for engineers and designers in the field of portable electronics.