Charging circuit composed of LP3945 - Power Circuit - Circuit Diagram

MOS Power IC Full Range
Industrial Router Crystal 3.2x2.5mm 3225 26M (26.000MHz) 12PF 10PPM 20PPM 30PPM
Probe Current Voltage Pin 420x4450 Head Diameter 5.0 Over Current Current and Voltage Pin
One-Piece Inductor

LP3945 is capable of adjusting the operating parameters of a lithium-ion battery. It can also read the status of the constant current and constant voltage registers via its IC interface, allowing users to check the charging cycle's progress.


I just finished setting up the test bench for the new industrial router crystal we’re evaluating. The 3.2x2.5mm size makes it incredibly compact, perfect for space-constrained applications. I’ve been running some initial tests on the 26M (26.000MHz) model with 12PF capacitors. So far, the performance has been solid, but I’ll need more time to fine-tune the PPM settings—especially between the 10PPM, 20PPM, and 30PPM options—to ensure optimal stability under different conditions.

On another note, I’ve been experimenting with this one-piece inductor for our upcoming power supply design. Its compact form factor and high current handling capability make it ideal for integration into the LP3945 circuit. Speaking of which, I’m still tweaking the probe setup to measure the precise current and voltage at the pin terminals. The 420x4450 head diameter and 5.0mm head width are proving to be quite useful when dealing with overcurrent scenarios.

Overall, things are moving along well. The MOS power ICs we’re testing show great promise, especially since they offer a full range of configurations. I’ll keep you posted as I gather more data. Let me know if there’s anything specific you’d like me to focus on next!

Linear Power Supply

A Linear Power Supply is an electronic device designed to provide a precise and stable DC voltage output from an AC input. It utilizes a linear regulator to maintain a constant output voltage despite variations in input voltage or load current.
Working Principle
Transformer Stage: The AC input voltage is first stepped down by a transformer to a lower AC voltage level.
Rectification: The transformed AC voltage is then converted into pulsating DC voltage through a rectifier circuit, typically using diodes.
Filtering: A filter circuit, often consisting of capacitors, removes ripple from the pulsating DC voltage to produce a smoother DC output.
Regulation: A linear regulator adjusts the output voltage to maintain a precise and stable level, despite changes in input voltage or load conditions. This is achieved by dissipating excess power in the form of heat.
Key Features:Stable Output、Low Noise、Excellent Regulation、Simple Circuitry

Linear Power Supply,12V Linear Power Supply,24W Linear Power Supply,15V Linear Power Supply

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