li ion battery charger circuit
The circuit presented is designed for charging a single-cell lithium-ion battery efficiently. The LP2391 is a linear voltage regulator that provides a constant output voltage, making it suitable for battery charging applications. The typical charging voltage for a lithium-ion cell is approximately 4.2 volts, and the LP2391 can be configured to deliver this voltage with minimal ripple and noise.
The basic components of the circuit include the LP2391 IC, input and output capacitors, a resistor for setting the output voltage, and a diode for preventing reverse current. The input capacitor is essential for stabilizing the input voltage and reducing noise from the power supply. The output capacitor smooths the output voltage, ensuring a stable charging current to the battery.
Additionally, the circuit may incorporate a temperature sensor to monitor the battery temperature during charging. This feature enhances safety by preventing overheating, which can lead to battery damage or failure. A microcontroller can also be integrated to manage the charging process, providing features such as charge termination and status indication.
Overall, this circuit design provides a reliable and effective solution for charging single-cell lithium-ion batteries, making it suitable for various applications, including consumer electronics and portable devices. Proper layout and component selection are critical to ensure optimal performance and safety in real-world applications.This article describes a circuit of simple single cell li ion battery charger or lithium ion battery charger. Using the LP2391 regulator IC.. 🔗 External reference
Related Circuits
The triangular wave circuit consists of two operational amplifiers (OPs). R62 serves as the offset adjustment, while R27 is utilized for peak adjustment. A switch is included to select different resistances, allowing for the generation of triangular waves at...
The Function Generator is essential laboratory equipment. The module described here is based on the high-quality XR2206 integrated circuit (IC). The 1Hz - 2MHz XR2206 Function Generator is capable of producing high-quality sine, square, and triangle waveforms with high...
The transmitter is constructed on a Printed Circuit Board (PCB). This board incorporates track inductors for L1, L2, and part of L3. The section surrounding Q1 functions as the oscillator section, with the oscillation frequency determined by L1, C4,...
This is an application circuit for calibration known as a high voltage AC calibrator circuit. A key aspect of sine wave oscillator design is the stable control of amplitude. In this circuit, the amplitude is stabilized through servo control,...
It is advisable to prototype the entire circuit using a breadboard. This method simplifies the process significantly compared to attempting to determine the connections on a small printed circuit board. Prototyping a circuit on a breadboard allows for easy modifications...
The metal detector circuit comprises an oscillator and a sound-light alarm circuit. The oscillator circuit includes an inductor (L), a capacitor (C1), a sensor switch integrated circuit (IC1) that integrates the oscillator, detector, comparator circuit, and peripheral components. The...