LGS5145 Voltage Regulator
About the LGS5145 Voltage Regulator PCB
LGS5145 Voltage Regulator is an open source PCB design by R8bert, published on GitHub. It is a 2-layer board measuring 25 × 50 mm, with 15 components from 13 distinct parts.
Other key parts include the LGS5145, INPUT and OUTPUT. By type, the board carries 5 resistors, 3 ICs, 3 capacitors, 2 LEDs, 1 diode and 1 inductor.
From the project
This repository contains the hardware design files for a compact, high-efficiency DC-DC step-down (buck) converter based on the LGS5145 integrated circuit.
This repository contains the hardware design files for a compact, high-efficiency DC-DC step-down (buck) converter based on the LGS5145 integrated circuit.
This PCB is designed to take a wide input voltage (4.5V to 55V) and convert it to a stable, lower output voltage with a continuous current capacity of up to 1.0A. The 1.2MHz switching frequency allows for the use of small, low-profile external components. Its wide input range makes it suitable for demanding applications, including 42V automotive power systems.
Main components on the LGS5145 Voltage Regulator
LGS5145 Voltage Regulator bill of materials (BOM)
15 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LGS5145 | SOT-23-6_L2.9-W1.7-P0.95-LS2.8-BL | U1 |
| 1 | INPUT | CONN-TH_P5.00_KF301-5.0-2P | U2 |
| 1 | OUTPUT | CONN-TH_P5.00_KF301-5.0-2P | U3 |
| 2 | VIN LED | LED0603-R-RD | LED1, LED2 |
| 1 | SS34 | SMA_L4.3-W2.6-LS5.2-RD | D1 |
| 1 | 10uH | IND-SMD_L7.0-W6.6_0630CDMCCDS | L1 |
| 1 | 10uF/50V | C0805 | C1 |
| 1 | 10uF/10V | C0603 | C2 |
| 1 | 100nF/16V | C0603 | C3 |
| 2 | RF | R0603 | R1, R3 |
| 1 | RG | R0603 | R2 |
| 1 | 60K | R0603 | R4 |
| 1 | 1K | R0603 | R5 |
LGS5145 Voltage Regulator design files
The KiCad project lives in the R8bert/DC-DC-Regulators repository on GitHub; these links point at the commit this page was built from.
LGS5145 Voltage Regulator: common questions
How big is the LGS5145 Voltage Regulator PCB?
The LGS5145 Voltage Regulator measures 25 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the LGS5145 Voltage Regulator?
15 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the LGS5145 Voltage Regulator design files?
From the R8bert/DC-DC-Regulators repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the LGS5145 Voltage Regulator design in my own project?
The repository has no license, so all rights stay with R8bert. Use it as a reference, and ask the author before reusing the design.
