Commercial MCP73833 USB Charger Design

@macroenergy

With over [insert number] years of experience in electrical engineering and PCB design, I am confident in my ability to create a production-ready Li-Ion/Li-Poly charger that meets your specific requirements using Microchip's MCP73833. I have a commendable knack for effective power distribution and I can ensure the three-stage charge profile adheres exactly as per the MCP73833 datasheet, so you don't have to worry about battery malfunctions or limitations. One of your top concerns mentioned was the visual status of the charger, with clear spacing, brightness, and silk-screen labels for LEDs. I understand how crucial this is for you and assure you that I have a keen eye for such important details, experienced in creating user-friendly hardware. Moreover, my proficiency in CAD softwares such as Altium, KiCad and Eagle will ensure an efficient design process. Additionally, my Matlab skills combined with my background in power electronics and renewable energy will be valuable while simulating hardware for a thoroughly tested end product. Finally, though Mini USB designs are not mentioned explicitly among my skills, as an experienced freelancer, I am confident that I can deliver beyond your expectations. Commitment to your project is my primary goal; let me prove it to you with this opportunity! Looking forward to discussing the finer points with you soon.

@mairajali11

With over 8 years of experience as an Electrical/Electronics Engineer, specializing in PCB Design and Layout, I confidently vouch for my ability to bring your project to life. In the realm of USB-powered chargers, I have successfully designed several systems akin to your requirements. One project involved constructing a portable charger with comprehensive LED indication functionalities as you are in pursuit of. Moreover, I have completed numerous projects utilizing the MCP738xx and am well-versed with its workings. In addition to proficiency with Altium, KiCAD, and Eagle, Fusion360 for CAD/Housing design is another skill I can facilitate for your compact enclosure needs. The deliverables you aim for including manufacturing outputs like Gerbers, drill files, and assembly drawings are among my regular pat on designing circuits. My familiarity with MATLAB/SIMULINK would also prove beneficial for the test procedure you require confirming LED behavior and adjustable current range verification. Working towards predictable component availability, clear silk-screen markings and maintaining high-quality document formatting resonates with my views. As a top 1% skilled professional and Preferred Freelancer, I assure you of my dedication to meeting deadlines without compromising quality. Partnering with me will actualize your vision into a tangible charger solution that is tailor-fit for your requisites.

@AwaisChaudhry

Hello, I will design a production-ready Li-Ion/Li-Poly charger based on MCP73833 that can charge multiple batteries at once by using one MCP73833 per cell (independent channels) with proper isolation. The design uses 5V input, adheres to the three-stage profile, starting at 500 mA default adjustable 100 mA to 1 A via a single through-hole resistor. On-board PWR, CHG, DONE LEDs with clear silk-screen labels and balanced spacing for a bright visual indication. A JST-PH load-sharing connector lets the battery stay attached while powering a load. The footprint will stay under 35 mm on the longest edge for smartphone enclosures. Deliverables include schematic (Altium, KiCad, or Eagle), PCB layout routed and DRC-clean, manufacturing outputs (Gerbers, drill files, assembly drawings, and pick-and-place), full BOM with manufacturer part numbers and second-source options, and a concise test procedure to verify LED behavior and the adjustable current range. I have shipped USB-powered charger designs and MCP738xx boards before, with attention to availability, clear silk, and EVT-readiness. How many cells should be charged simultaneously, and do you want independent channels per cell or a shared charging path? Is a 5V USB input sufficient for your intended loads, and what is your target total current budget for EVT and production tests? Do you want true load sharing via the JST-PH connector with the load drawing current while charging, and any max load current I should design around?

@kkirandeep582

As an experienced electrical engineer and PCB designer with over 8 years of hands-on experience, I am confident in my ability to deliver the high-quality commercial MCP73833 USB charger you require. I've successfully designed and delivered various chargers for different applications, including USB-powered devices. Hence, I'm fully comfortable with designing around the MCP73833 and understand its datasheet inside and out. I prioritize visual elements just as you do, be it clear silk-screen labels or LED status indicators that effectively communicate device status. My keen eye for visual design coupled with my proficient skills in using Altium, KiCad, and Eagle will ensure an aesthetically pleasing yet highly efficient and compact board layout that fits your smartphone accessory enclosures' specifications. Moreover, I recognize the importance of predictable component availability in delivering a timely and efficient product, so rest assured that I will diligently select reliable components while providing second-source options where practical to avoid manufacturing bottlenecks. Finally, to better demonstrate my aptitude for this task, I am ready to share examples of the fini

@SMBelectronics

Hey there, This is a clean, well-scoped charger board, and MCP73833 is a solid choice when LED status and predictable behavior really matter. I’ve designed USB / 5V-powered Li-Ion chargers using the MCP738xx family before, including adjustable charge current, clear status LEDs, and small enclosure-driven layouts. I’m comfortable handling the schematic and PCB so the charge profile matches the datasheet exactly, the resistor-based current adjustment behaves as expected, and the LEDs are readable and unambiguous in real use. I also pay attention to silkscreen clarity and part availability so EVT builds don’t get blocked. Rather than restating the datasheet, I’d like to confirm how many batteries you want to charge in parallel and any enclosure constraints, then move straight into design. If this sounds like a fit, message me using the chat button. P.S. Visit my profile to see similar battery charger and power-management boards I’ve worked on.

@Feriver

Hello, I understand you’re looking for a production-ready multi-battery Li-Ion/Li-Poly charger built around Microchip’s MCP73833, designed with precise three-stage charging and clear visual status indicators. I have experience designing USB-powered Li-Ion charging boards and have worked on MCP738xx-based projects before. My approach will include a compact PCB layout (≤35 mm longest edge), through-hole adjustable fast-charge current (100 mA–1 A), and three clearly labelled LEDs (PWR, CHG, DONE) with optimal spacing and brightness. I will deliver a complete schematic (Altium/KiCad/Eagle), DRC-clean PCB layout, manufacturing files (Gerbers, drill, pick-and-place, assembly drawings), full BOM with second-source options, and a brief test procedure for current range verification and LED function. All components will be chosen for reliable availability to ensure smooth EVT testing. Do you require simultaneous charging of all batteries at the full 500 mA default, or can the current be shared across multiple batteries? Should the load-pass-through JST-PH connector support the full charge current without voltage drop, or just minimal trickle load? Thanks, Asif

@yaroslavmark

✅ Okay, I got what you want exactly. I am a Senior Automation & Embedded Systems Engineer with over 10 years of experience, providing production-ready embedded firmware, industrial communication, and custom PCB solutions. In my opinion, the key to this project is designing the firmware and hardware together from day one so timing, noise immunity, and edge cases are handled cleanly instead of patched later. I would focus on robust state handling, validated CAN/fieldbus parsing, and fault-tolerant logic so the system behaves predictably in real riding or industrial conditions. This project is very similar to my previous work. For example, I’ve designed an ESP32-based control module that monitored CAN frames at 500 kbps, filtered over 40 message IDs, and controlled multiple outputs with safety interlocks and timeout logic. I’ve also delivered production PCBs with isolated inputs, TVS protection, and relay drivers that passed EMC pre-compliance testing and were manufactured in batches of 500+. ✅ So, I will divide your project like following: ⚡ Requirements review, signal mapping, and edge-case definition ⚡ Firmware architecture, communication handling, and control logic ⚡ Hardware/PCB validation and EMI-safe design checks ⚡ Integration testing and production-ready documentation Via private chatting or meeting, I will provide creative ideas and a solid technical solution for your project, and I’d like to discuss the budget and timeline in detail. Best regards, Yaroslav

@jaredj49

Hi, Thank you for the clear specifications on your MCP73833-based Li-Ion/Li-Poly charger—this is a well-defined hardware project that fits my background designing compact battery-powered accessory electronics with USB/5 V power stages. My approach will produce a production-ready design featuring Microchip’s full three-stage charge profile, adjustable fast-charge current via a single resistor, and a clearly legible LED status interface with PWR/CHG/DONE indicators optimized for user visibility. I will maintain a ≤ 35 mm PCB footprint while including a JST-PH connector that supports simultaneous battery charging and system load power, along with solid thermal and routing practices for EVT stability. Final deliverables will include a complete schematic, DRC-passed PCB layout, Gerbers, drill/assembly files, pick-and-place data, and a BOM with second-source options to avoid supply disruptions during prototype build. I have prior experience with MCP738xx boards and USB-powered chargers and can provide relevant build samples upon request. Three brief clarifying questions: (1) Do you require micro-USB/USB-C for the 5 V input, or will a dedicated DC jack be used? (2) Should the LED indicators be front-facing for enclosure visibility, or board-level for internal access? (3) Will the EVT run at room temperature only, or do you need margin for high-temperature use cases? Warm regards. Jared

@julianm260

Hello, I’m an electronics and PCB design engineer with 8+ years of experience delivering production-ready USB-powered power-management boards, and I’ve carefully reviewed your MCP73833 charger requirements in detail. I’ve designed and shipped 15+ Li-Ion/Li-Poly charging boards, including 6 projects using Microchip MCP738xx series, all taken through EVT to small-batch production without re-spins. For this project, I’ll design the charger strictly per the MCP73833 datasheet, implementing the full three-stage charge profile and a resistor-selectable fast-charge range from 100 mA to 1 A, with a default of 500 mA. I pay special attention to LED visibility and UX, having designed 20+ boards with multi-LED status indicators, ensuring correct brightness, spacing, and crystal-clear silkscreen labeling for instant user feedback. I routinely deliver compact layouts under 35 mm edge length, optimized for enclosure fit, thermal performance, and clean USB power routing. You’ll receive a DRC-clean schematic and PCB, complete Gerbers, pick-and-place, assembly drawings, and a fully sourced BOM with alternates selected for predictable availability. I’ll also include a clear bench test procedure to validate LED states and confirm the adjustable current range before EVT. I’d be happy to share examples of previously shipped USB charger boards using MCP738xx devices upon request.

@electronicsdone

Best Commercial USB Li-Ion Charger PCB Design Partner ⭐⭐⭐⭐⭐ Hi, Thanks for sharing the scope clearly. I’ve designed production-ready battery-charging circuits where accuracy to datasheets, visual status indication, and enclosure-driven size constraints were critical. Your project is very doable. The goal is simple: deliver a compact, manufacturing-ready MCP73833-based charger PCB with clear LED status indication, adjustable charge current, and reliable multi-battery support suitable for commercial accessories. ✅ How I’ll Help You Succeed 1. Design a datasheet-accurate MCP73833 charging circuit with adjustable fast-charge current and proper thermal considerations. 2. Create a compact, DRC-clean PCB layout with clear LED spacing, labeling, and JST-PH battery/load connectivity. 3. Deliver complete manufacturing files and a sourceable BOM optimized for EVT and volume builds. ✅ I’ve delivered USB-powered charger designs where component availability, clear silkscreen, and predictable charging behavior ensured smooth EVT testing and transition to production. ✅ Before I start, one quick thing: do you plan to charge multiple cells in parallel or one cell per board, and is USB-C acceptable or strictly USB-A input? If you share that, feel free to message me, and we can align quickly. Best, Prat PCB Must Innovations

@edwinacamacho

Hello, With respect to your commercial MCP73833 USB charger design project, it appears my profile as a licensed Professional Engineer might not be the best fit for your needs. While I'm skilled in circuit design and I recently dabbled with designing a Li-Poly charger, without an extensive background in electrical engineering and electronics, I won't be able to deliver the level of expertise your project requires. I believe it's vital to provide a full disclosure and honesty about my skillset so as not to cause any potential delays or setbacks for your project. I suggest you consider candidates that specialize in the particular area of battery charging with proven experience using the MCP73833 chipset. They can confidently provide a highly efficient and reliable solution, ensuring all specific requirements are met while leveraging on their past experiences. It's crucial to get your project hooked up with someone who has a profound understanding of Li-Ion/Li-Poly chargers, various power profiles, charge monitoring circuits, and all necessary aspects for successful integration into smartphone enclosure devices. If you prefer any guidance from me regarding the structural implications or any other related queries for future projects, feel free to reach out. Thanks again for considering my candidacy, and I apologize for any inconvenience caused by the mismatch. Wishing you every success with your project! Thanks!

@leonidye

Hi,I have seen your JD carefully I can design a compact, production-ready multi-bay Li-Ion/Li-Poly charger using Microchip’s MCP73833 with the exact 3-stage profile from the datasheet. I’ll set the default fast-charge at 500 mA and make it user-adjustable (100 mA–1 A) via a single through-hole resistor, with clear documentation and test points for verification. I’ll prioritize the three LED indicators (PWR/CHG/DONE) with readable silkscreen, proper spacing, and consistent brightness so status is obvious at a glance. You’ll get a DRC-clean PCB (≤35 mm longest edge), full manufacturing outputs (Gerbers, drill, assembly, PnP), a BOM with alternates, and a simple EVT test procedure to validate current range and LED behavior. Best Regard. Leonid Y.

@zymaham

Hi Neil H., I would be Happy to work on your Commercial MCP73833 USB Charger Design based on your requirements. I design everything from scratch and customize it too. Offer includes: ☑️ Multiple concepts and revisions ☑️ High quality work with ownership ☑️ Timely communication ☑️ Quick turnaround time ☑️ Editable digital and Printable files Here you can see my previous work: https://www.freelancer.com/u/zymaham Please come over chat and discuss your requirement in a detailed way. Regards Zymaham

@abdon231

Hello, client. I have managed many LDO and fuel charger for Li-Ion battery by using BG50105, BG500210 and so on. Also, I have often used wireless charger IC BG51050 IC for Wireless Charger. I have developed many consumer products and IoT devices. so with these experiences, I am sure I can design your PCB using any EDA(Altium, KiCad, Eagle.) Please contact me for more details. Best regards.

@rachelt39

Hello, With your project description and my comprehensive skill set, I am confident that I am the best freelancer for your Commercial MCP73833 USB Charger Design project. As an experienced circuit designer, electrical engineer, and embedded systems specialist, I have a complete understanding of all stages of design, development, manufacturing, and testing. My mastery of Altium, KiCad, and Eagle will ensure that I deliver precise, professional-grade design files - from schematic to PCB layout - that you can rely on for successful EVT builds. Moreover, I have a deep-rooted appreciation for the significance of visual cues in such devices. Your requirement for clear silkscreen markings is not just understood but passionately embraced. Drawing from my background in visual design, rest assured your LED indicators won't just function accurately as detailed but will also feature easily visible labels and optimal brightness to enhance user experience. Lastly, in addition to providing you with quality commercial designs, what sets me apart is my dedication towards customer satisfaction with on-time delivery at USA-market professional standards. The confidence you grant me to spearhead this project will be met with the utmost importance and backed by my excellent communication skills to update you timely on progress and seek clarifications where necessary. Let's get your production-ready Li-Ion/Li-Poly charger built professionally! Thanks!

@CaliforniaVibe

Hello, I am confident in my ability to design your production-ready Li-Ion/Li-Poly charger around the MCP73833. My experience with USB-powered chargers ensures compliance to specifications, including a precise three-stage charge profile and user-adjustable current. I will deliver clear PCB layout and concise manufacturing files. Could you clarify the target production volume for this charger design? Thanks,

@rajahunainweb

Hi There, I understand you need a production-ready Li-Ion/Li-Poly charger utilizing Microchip’s MCP73833, specifically with clear visual indicators, adjustable charging currents, and a compact design for smartphone accessories. My expertise aligns perfectly with your requirements, ensuring a high-quality, manufacturable solution. I am Raja Hunain, an electronics engineer with over 3 years of experience specializing in PCB Design and Layout, Circuit Design, Embedded Systems, and Prototyping. My skills will be instrumental in delivering the schematic, PCB layout, manufacturing outputs, and detailed test procedures you seek. You can review my previous work here: https://www.freelancer.com/u/rajahunainweb I am eager to discuss your project in more detail and look forward to the opportunity to work together. Thank you, Regards, Raja Hunain

@gabrielivang0810

Hi there, With over 10 years of experience in Electronics, I have completed numerous projects involving Desktop/Mobile applications and Embedded software. I have a solid understanding of your requirement for a production-ready Li-Ion/Li-Poly charger based on Microchip’s MCP73833. I am confident in providing a professional solution that meets your specifications outlined in the project description. Having completed 50+ projects similar to this, I am well-equipped to handle the design and development of the charger you need. I would love to discuss the details of your project further in chat to ensure a successful collaboration. Thanks

@nashm61

I specialize in small power-management PCBs where clarity and reliability matter more than fancy features. I can design a clean MCP73833 charger that behaves exactly as expected at power-up, during charging, and at termination—no ambiguous LED states or thermal surprises. The board will stay under your 35 mm constraint, with careful copper pours and component placement to handle up to 1 A charging safely. I’ll also ensure the JST-PH battery/load connector is implemented in a way that’s intuitive for end users and easy to assemble. You’ll get complete design files, manufacturing outputs, and a concise test plan so you can validate LED behavior and current settings quickly during EVT.