The LTC4062EDD from Linear Technology is a highly efficient, stand-alone nickel battery charger capable of charging one to four cells. It is housed in a compact DFN package, making it an ideal choice for portable applications where space is at a premium.

Key Features:

• Charge Current: The device offers a programmable charge current up to 2A, which can be set via a single external resistor, providing flexibility for various battery sizes and desired charge times.
• Cell Chemistry: It is designed to charge nickel-metal hydride (NiMH) or nickel-cadmium (NiCd) batteries, which are commonly used in portable electronics.
• Voltage-Based Charging: The LTC4062EDD utilizes a delta V charge termination scheme, which detects the characteristic voltage drop that indicates a full charge in nickel-based batteries, ensuring a full charge without overcharging.
• Bad Cell Detection: The integrated bad cell detection feature helps to identify and prevent charging of defective or shorted cells, enhancing safety and reliability.
• Temperature Monitoring: An onboard temperature sensor input allows for charge termination based on temperature, further protecting the battery and extending its life.
• Automatic Recharge: The device includes an auto-recharge feature that initiates a new charging cycle when the battery voltage falls below a preset threshold, keeping batteries topped off.
• Compact Package: The LTC4062EDD comes in a low profile (0.75mm) 10-lead DFN package with a 3mm x 3mm footprint, suitable for space-constrained applications.

Applications:

The LTC4062EDD is versatile and can be used in a variety of applications, including but not limited to:

• Portable Medical Devices
• Handheld Instruments
• Backup Battery Systems
• Consumer Electronics
• Industrial and Automotive Electronics

With its advanced features and compact design, the LTC4062EDD from Linear Technology stands out as a robust solution for charging nickel-based batteries efficiently and safely.