AS3701A-BWLT-51

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Power management integrated circuits (PMICs) are crucial components that regulate the power supply to the different parts of a circuit. The AS3701A-BWLT-51 is a highly specialized PMIC designed for battery powered applications. It has the capability to regulate the charge, discharge and maintenance current for Li-Ion batteries. It is suitable for a wide range of system applications, including wearable and portable medical, fitness and lifestyle products.

The AS3701A-BWLT-51 contains a complete power management unit for Li-Ion batteries. It has a highly integrated boost and buck regulator, current sense amplifier and protection circuitry. The boost and buck regulators are designed to work independently and concurrently, allowing them to be used in tandem to regulate the voltage of a Li-Ion battery. The current sense amplifier is used to accurately measure the current flow in or out of the Li-Ion battery, while the protection circuitry protects the battery from over-charging, over-discharging and over-temperature conditions.

The AS3701A-BWLT-51 is designed to be compatible with various Li-Ion battery chemistries, such as Lithium Cobalt Oxide, Lithium Iron Phosphate and more. It comes in a tiny 14-pin QFN package, allowing it to be used in space-constrained designs. The device also has a low power consumption, making it ideal for battery-powered applications. For the cost conscious, the AS3701A-BWLT-51 is an economical solution, as it is available in large quantities at a reasonable cost.

The working principle of the AS3701A-BWLT-51 is fairly simple. An external switch is connected to the battery’s positive terminal, while a current sense resistor is connected to the battery’s negative terminal. The device then monitors the current flowing through the battery, and compares it to the programmed target current. When the current is too high or too low, the device increases or decreases the voltage by regulating the current through the external switches.

The AS3701A-BWLT-51 also has comprehensive protection features to further safeguard the battery. It includes two sets of low voltage protection (LVP) and over-charge (OCP) protection, as well as a thermal shutdown. In the event of over-temperature or over-current condition, the device will automatically shut down to protect the battery from damage.

In summary, the AS3701A-BWLT-51 is a specialized PMIC designed for battery powered applications. It has the capability to regulate the charge, discharge and maintenance current of Li-Ion batteries, and comes in a small 14-pin QFN package. The device has comprehensive protection features, and is available at a reasonable cost. The working principle is fairly simple and the device can be used in a range of system applications, including wearable and portable medical, fitness and lifestyle products.

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