The MAX1501ETE+ from Maxim Integrated is a sophisticated, high-performance battery charger IC designed for applications requiring efficient charging of single-cell lithium-ion (Li+) batteries. This advanced IC integrates a current-sense amplifier, a MOSFET pass transistor, and a thermal-regulation loop to ensure safe and efficient charging operations.

Key Features

• Charge Voltage Accuracy: The MAX1501ETE+ ensures precise charge voltage with an accuracy of ±0.75%, which is critical for maximizing battery life and performance.
• Programmable Charge Current: Users can set the charge current up to 2A through an external resistor, allowing for flexibility across different battery capacities and charging requirements.
• Thermal Regulation: This feature protects the IC and the battery by reducing charge current during high-temperature conditions, thus preventing overheating.
• Charge Termination: The IC includes an automatic charge termination feature based on minimum current, ensuring the battery is not overcharged.
• Prequalification Charging: In cases where the battery voltage is below a certain threshold, the MAX1501ETE+ provides a prequalification charge mode with a lower charge current to safely bring the battery up to a level where normal charging can commence.

Applications

The MAX1501ETE+ is suitable for a wide range of applications, including:

• Portable devices such as smartphones, tablets, and digital cameras
• Handheld medical equipment
• Portable power tools
• Any other device powered by a single-cell Li+ battery

Technical Specifications

Operating within a supply voltage range of 4.25V to 5.5V, the MAX1501ETE+ is designed to be versatile and robust. The package is a 16-pin TQFN, which is compact and suitable for space-constrained applications. Moreover, it features a variety of safety mechanisms, including overvoltage protection, short-circuit protection, and a battery temperature monitor, which can be interfaced with an external thermistor for precise temperature-based charging control.

For engineers and designers looking for a reliable and efficient solution for charging single-cell Li+ batteries, the MAX1501ETE+ offers an excellent blend of performance, precision, and protection.