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2 layers10.2 × 9.1 mmCharge pump, the printed circuit board in 3D

IOT - Ultra tiny 3.3V or 2.5V Step-Up/Step-Down Charge Pump DC/DC Converter

Size
10.2 × 9.1 mm
Copper layers
2
Thickness
1.6 mm
Parts
5
Nets
5
Pads
18
Tracks, vias
34, 4
Pours
1
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
22 Aug 2023
Updated
13 Sep 2023

Overview

Charge pump is an open-source printed circuit board by rmingon, from the rmingon/charge_pump repository on GitHub. It is a 2-layer board of 10.2 × 9.1 mm with 5 parts on 5 nets, routed with 34 tracks and 4 vias.

Its parts include 3 capacitors, 1 IC and 1 connector. It belongs with the home automation and IoT boards of this library.

README

README.md

Ultra tiny 3.3V or 2.5V Step-Up/Step-Down Charge Pump DC/DC Converter for IOT based on LTC3240

Thank you to PCBWay for sponsoring the PCB production of this prototype.

This project exist for use IOT device with Alcaline/LIPO battery

PCBWAY WORK

PCBWAY WORK VIEW

FINISH PROJECT

FINISH VIEW

This device can give 3.3V with 1.8V to 5.5v input without self (see below)

Warning Between 1.8v and 2.5v in input the LTC3240 can give only 40mA

GRAPHIC VIEW


SCHEMATIC VIEW

SCHEMATIC VIEW

PCB VIEW

PCB VIEW

3D VIEW FRONT

3D VIEW FRONT

3D VIEW BACK

3D VIEW FRONT

Thank you to PCBWay for sponsoring this project by covering the cost of PCB production for beta. The boards turned out very nicely. The green solder mask looks solid and the grills holes is perfect.

Parts

5
QtyValueFootprintReferences
21ufCapacitor_SMD:C_0603_1608MetricC1, C3
14.7ufCapacitor_SMD:C_0603_1608MetricC2
1Conn_01x03Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ1
1LTC3240EDC-3_3Package_DFN_QFN:DFN-6-1EP_2x2mm_P0.5mm_EP0.61x1.42mmU1

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Questions

How big is the Charge pump PCB?

It measures 10.2 × 9.1 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Charge pump use?

5 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Charge pump KiCad files?

From the rmingon/charge_pump repository on GitHub, at the commit this page was made from: the board is pcb.kicad_pcb and its schematic pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Charge pump design in my own project?

Its repository states no licence, so its author keeps all rights: ask rmingon before reusing the design.