S-8261ABAMD-G3AT2U

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The Renesas Electronics S-8261ABAMD-G3AT2U is a general-purpose battery management device. It is an integrated system-on-chip (SoC) used to manage and monitor the voltage, current and temperature of low-voltage batteries.

The device is designed to serve as a feeder to safely charge, protect, and provide power to your battery. Its advanced features and functionalities offer high reliability and optimized performance in battery monitoring and management applications. The device also helps extend the runtime, while providing protection against overcharging and over-discharging of the battery.

The S-8261ABAMD-G3AT2U combines several functions into a single unit, combining an 12-bit A/D converter, an internal safety circuit, an internal temperature sensor, and an integrated memory. The device is available in a space-saving 8-pin package.

The S-8261ABAMD-G3AT2U is used mainly in single-cell Li-ion battery packs, and provides over-voltage protection, over-current protection and over-temperature protection. It also provides accuracy in monitoring and charging the battery, as well as protection against short-circuits, reverse connections, and overcharging. The device is ideal for use in portable devices, such as cell phones, MP3 players and digital cameras.

In terms of operational principle, the device follows a simple but effective algorithm, which works based on one or two thresholds. In single-cell applications, the over-voltage protection threshold is Vref/2, and is typically set to 3.7V. In two-cell applications, there are two thresholds, one for each cell. When the voltage of either cell reaches the threshold, an internal resistor is switched on, diverting the current away from the battery.

In addition to the protection features, the S-8261ABAMD-G3AT2U offers the ability to measure the battery voltage, current and temperature. The device also implements a load switch, to allow for the safe disconnection of the load from the battery. This is especially useful for applications in which the load must be disconnected for safety reasons, such as portable medical devices.

The S-8261ABAMD-G3AT2U is a good choice for a wide range of portable applications, from small portable electronics to large medical devices. It provides reliable protection against overcharging and over-discharging, while providing the accuracy and precision necessary for monitoring the battery in a safe and reliable manner.

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