UC3906N

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The UC3906N is a programmable precision current regulator intended for charging sealed lead-acid batteries; it is a battery charger that belongs to the category of PMICs, or power management integrated circuits. As a switchmode current regulation device, it is capable of supplying up to 150mA of current to the battery. The UC3906N is a precision monolithic integrated circuit with an intelligent feedback loop that enables it to control both the charging current and the output voltage while ensuring a charge on the battery. This makes it suitable for a wide range of charging applications, such as motor drive systems, battery-powered appliances, and portable electronics.

The UC3906N works by controlling the current flowing between a power source, such as a battery, and a charge source, usually a power adapter connected to a wall outlet. It senses the battery voltage and then adjusts the power to the battery so that the current is kept constant, thus preventing overcharging or undercharging of the battery. The output voltage of the charger is set using an onboard trim pot, so that the user can configure the charger for the specific battery being charged and the application.

The UC3906N is highly efficient, with very low power dissipation and low standby current. This allows it to provide a high current even at low input voltage. The device can operate from any input voltage from 7V to 30V with a 5V to 35V output. The UC3906N also features an adjustable charging current that can be set using a single 1-turn potentiometer, so that the user can customize the charger for different applications and configurations. The device also features low parts count and low standby current, making it suitable for use in a wide range of portable applications, including motor drive systems, battery-powered appliances, and portable electronics.

The UC3906N is an ideal charger for use in applications where low power dissipation and low standby current are critical. It also provides a reliable and accurate current regulation, which helps to ensure that the battery is charged safely and completely. This makes the UC3906N an excellent choice for a wide range of charging applications, from motor driven systems to battery-powered appliances and portable electronics.

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