ACT2802QL-T Integrated Circuits (ICs)

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The ACT2802QL-T is a highly efficient power management integrated circuit (PMIC) designed to regulate battery voltage for various applications. It combines buck, boost, linear, and Li-Ion battery charger circuitry into a single chip, enabling high-efficiency, low-cost battery management solutions. The ACT2802QL-T is optimized to support the Li-Ion battery chemistry, while also providing sufficient flexibility to support other chemistries such as NiCd and NiMH.

The ACT2802QL-T is a low-cost alternative to traditional battery management solutions. It is designed with a 3-pin micro-USB port interface and 4-pin PWM control interface, making it easy to control the charging and discharging of the battery via the on-board integrated circuit (IC). The buck converter converts an input voltage to a lower voltage and provides the desired voltage level to the load. The boost converter reverses the process and increases the input voltage level to a higher voltage level. The linear regulator maintains the voltage output from the buck and boost converter stages and provides a consistent voltage source.

The ACT2802QL-T also has many safety features including over-voltage protection and over-temperature protection. The IC also includes an Advanced Battery Management (ABM) function which monitors the voltage and current of the battery over time to ensure a longer battery life. ABM combines smart float voltage regulation with temperature monitoring, cell balancing, and short circuit protection to maximize safety and extend battery life.

The built-in charge control circuit supports charge termination based on either the total charging time or the total charging current. The built-in timer function allows the user to limit the total charging time. The timer function can also be used for other applications such as digital glitching prevention and to trigger active discharge at the end of charge. The charge control circuit also provides charge cycle count information to help track battery life.

In addition to regulating the battery voltage level, the ACT2802QL-T also supports Li-Ion battery charging. The Li-Ion battery charger circuitry is optimized to reduce heat and extend battery life. It also supports charge current levels up to 1.5A and a programmable charge voltage level. It also supports the standard “three-phase” charging algorithm with constant current, constant voltage, and termination phases.

Overall, the ACT2802QL-T is a highly efficient power management integrated circuit that provides a low-cost, high-performance solution for battery management. It combines buck, boost, linear, and Li-Ion battery charge controller circuitry into a single chip, enabling high-efficiency, low-cost battery management solutions. The ACT2802QL-T also has many safety features including over-voltage protection, over-temperature protection, and Advanced Battery Management (ABM) for longer battery life.

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