ADN8834ACPZ-R7 Integrated Circuits (ICs)

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ADN8834ACPZ-R7 is a power management integrated circuit (PMIC) in the specialized range of Texas Instruments. It serves as a bridge between the low voltages of a single-cell Li-ion battery and system loads. With its low quiescent current, it effectively manages and dissipates heat to minimize load and power.

The main application of this chip is in the protection and balancing of a single cell Li-ion battery and its related power sources. The protection makes sure that the passage of excessive current through the battery is prevented and so extends the lifetime of the battery. The balance ensures optimum utilization of the battery, resulting in higher efficiency and improved performance.

The device features a low quiescent current of 0.2µA, allowing it to effectively manage low-power usage. This, in combination with its low operating voltage, leads to very low operating temperature, reducing the thermal overhead. Moreover, its integrated 0.3 Ohm switch and Schottky diode converge to provide a steady and stable power source at the output.

The device also supports a wide operating range, with a minimum voltage of 2V and a maximum of 5.5V, making it easy to configure for a range of single cell Li-ion batteries. It also offers high accuracy of the balanced current at ±2% deviation, along with an adjustable speed for charging.

ADN8834ACPZ-R7 works on a voltage mode, current mode and charge pump principle. The voltage mode regulates the Li-ion battery’s voltage with a reference voltage. Furthermore, the device simultaneously monitors the Li-ion battery’s voltage level and current level to allow the output voltage to be adaptively regulated. This is done through the current mode, which adjusts the current to match with the required output voltage. Finally, the charge pump principle regulates the output voltage to the target voltage.

To summarize, the ADN8834ACPZ-R7 is a power management integrated circuit (PMIC) that serves as a bridge between the low voltages of a single-cell Li-ion battery and system loads. It comes with low quiescent current, wide operating voltage range and high accuracy of balanced current, combined with a 0.3 Ohm switch, a Schottky diode, and works on a voltage mode, current mode and charge pump principle. This makes it ideal for use in protection and balancing of single cell Li-ion batteries.

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