The LTC1734ES6-4.2#TRPBF is a high-performance, single-cell lithium-ion (Li-Ion) battery charger integrated circuit (IC) designed by Linear Technology, now part of Analog Devices. This compact and efficient charging solution is specifically tailored for portable electronic applications where space and thermal management are critical considerations.

Key Features

• Precision Charging: The LTC1734ES6-4.2#TRPBF offers a precise end-of-charge voltage of 4.2V, ensuring the battery is charged to its optimal voltage to maximize energy capacity and longevity.
• Programmable Charge Current: Users can set the charge current from 1mA to 1A via a single external resistor, providing flexibility for different battery capacities and thermal environments.
• Thermal Regulation: This IC incorporates thermal feedback, which regulates the charge current to prevent the chip from overheating, enhancing the safety and reliability of the charging process.
• Automatic Recharge: The device automatically initiates a new charge cycle when the battery voltage falls below an internal threshold, keeping the battery topped up without user intervention.
• No External MOSFET Required: The LTC1734ES6-4.2#TRPBF integrates an internal power MOSFET, which simplifies the design and reduces external component count.
• Charge Status Output: A charge status output pin is available to provide a simple indication of the charging process, which can be used to drive an LED or interface with a microcontroller.
• Low Profile: Housed in a low-profile (1mm) ThinSOT package, this IC is ideal for slim and compact devices.

Applications

The LTC1734ES6-4.2#TRPBF is suitable for a wide range of applications, including but not limited to:

• Portable Medical Devices
• Handheld Instruments
• Bluetooth Headsets
• Smart Wearables
• Backup Power Supplies

Quality and Reliability

Linear Technology's commitment to quality ensures that the LTC1734ES6-4.2#TRPBF meets the highest standards of reliability and performance. With features like over-temperature protection and precision charge control, this IC is designed to provide a safe and efficient charging solution for Li-Ion batteries in critical and demanding applications.