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S-8264BAB-I8T1U application field and working principle

The S-8264BAB-I8T1U is a high-performance, cost-effective power management integrated circuit (PMIC) for battery management. It is ideally suitable for single cell Lithium-ion battery powered systems and provides a range of integrated features including battery voltage and charge current measurement, electrical temperature measurement, an adjustable charger current limit, over temperature protection, and over voltage protection across multiple operating temperatures.

The S-8264BAB-I8T1U offers a comprehensive battery management solution by combining a battery charger, measurement, protection, and communication functions in a single IC. This integration reduces the component count and simplifies the design of battery powered systems.

The S-8264BAB-I8T1U requires minimal external components, reducing bill-of-material cost and design complexity for space-constrained applications. Its high level of integration and fully integrated power management functions eliminate the need for complicated external circuitry and multiple PMICs.

Application fields

The S-8264BAB-I8T1U PMIC is suitable for a wide range of single cell Lithium-ion battery powered systems, including consumer, portable and industrial applications.

• Portable devices: mobile phone, Laptop and wearable.
• Industrial application: handheld data collector, medical device and machinery.
• Consumer: tablet and portable audio.

Working principle

The PMIC supports Li-ion/ Li-polymer batteries through a highly integrated charge control function and includes a Buck-Boost Converter for system power regulation. The integrated battery charger features wide supply voltage range from 3.3V up to 16V, adjustable charging current from 50mA up to 1850mA and operating from –40°C to +85°C.

The PMIC allows multiple charging mode: CC-CV (Constant Current-Constant Voltage) mode, CV-CC (Constant Voltage-Constant current) mode, as well as fast charge mode. The charging current and voltage can be adjusted according to the user\'s need. The PMIC also supports an optional timer based charging mode to automatically stop the charging process after the predefined time.

The PMIC integrates over voltage protection, over current protection and over temperature protection to ensure the safe operation of the circuit. The PMIC also features reverse battery protection to prevent damage to the system in case of reverse battery connection.

The integrated power management functions of the S-8264BAB-I8T1U eliminate the need for multiple PMICs. The PMIC supports multiple power domains and contains a wide range of features including power management, voltage and current monitoring, sleep mode operation and system shutdown. The integrated RTC. Low power sleep mode with rapid wake-up, low quiescent current and extended battery life for portable applications.

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