LTC1734ES6-4.2#TR - Linear Technology's Lithium-Ion Battery Charger

The LTC1734ES6-4.2#TR is a compact, single-cell lithium-ion battery charger integrated circuit designed by Linear Technology (now part of Analog Devices, Inc.). This highly efficient device is tailored to deliver precision charging for portable electronic devices that utilize a single 4.2V lithium-ion battery. With its small footprint and surface-mount packaging, the LTC1734ES6-4.2#TR is an optimal solution for space-constrained applications.

Key Features:

• Charging Voltage: The LTC1734ES6-4.2#TR is programmed to charge a single lithium-ion cell to a final float voltage of 4.2V, ensuring the battery is fully charged while maintaining longevity.
• Programmable Charge Current: Users can set the charge current from 1mA to 1A through a single external resistor, providing flexibility for different battery capacities and thermal environments.
• Low Dropout Voltage: The device operates with a very low dropout voltage, enabling it to continue charging the battery even under low input voltage conditions.
• Automatic Recharge: The LTC1734ES6-4.2#TR features an automatic recharge function that initiates a new charging cycle if the battery voltage falls below a preset threshold, ensuring the battery remains fully charged.
• Charge Status Output: A charge status output pin (CHRG) indicates the charging progress, which can be used to drive an LED or interface with a microcontroller for charge monitoring.
• Thermal Protection: The device includes a thermal regulation mechanism to maximize the charge rate without the risk of overheating.
• Compact Package: The LTC1734ES6-4.2#TR is available in a small SOT-23 package, making it suitable for portable applications where space is at a premium.

Applications:

The LTC1734ES6-4.2#TR is ideal for a variety of applications, including:

• Handheld Instruments
• Bluetooth Headsets
• Portable Media Players
• Medical and Fitness Devices
• Smart Watches
• Other Portable Consumer Electronics

With its precision charging capabilities and user-friendly features, the LTC1734ES6-4.2#TR from Linear Technology stands out as a reliable and versatile solution for lithium-ion battery management in compact electronic devices.