The most common application. Any third-party 100W laptop charger cable (for MacBook Pro, Dell XPS, or gaming laptops) likely contains a YC2019. The chip tells the laptop’s battery management system, “I am a 5A-capable cable. You may draw 20V at 5A.” Without the chip, the charger would default to a safe but slow 3A (60W).
| Feature | Firstchip YC2019 | Cypress CCG2 (CYPD2104) | Weltrend WT6632P | | :--- | :--- | :--- | :--- | | | Budget/Aftermarket | Premium/OEM | Mid-Range | | Pin Count | 8-pin DFN (small) | 24-pin QFN (larger) | 10-pin DFN | | Programmability | OTP (One-time) | Flash (Re-writable) | OTP | | Cost | Low ($0.20-$0.35) | High ($0.80+) | Medium ($0.45) | | Best For | Cables, simple adapters | Complex docks, laptops | Power banks, hubs |
The Firstchip YC2019 has a wide range of applications and use cases, including:
Have you used the YC2019 in a project? Let us know in the comments below.
Unlike the three-pin LM2596, the YC2019 modules typically break out a fourth pin labeled "EN". Pulling this pin low (under 0.4V) puts the regulator into , drawing only 10µA from the input. This is perfect for battery-powered IoT devices.
Before attempting a repair, verify the controller using ChipGenius or ChipEasy. Look for the "Controller Part-Number" to confirm it is indeed . 2. Selecting the Correct Software
Budget flash drives often marketed with exaggerated capacities or generic "VendorCo" branding. Common Technical Failures
Set the to "High Scan" or "Standard Scan" for better reliability.
So, what makes the Firstchip YC2019 so special? Here are some of its key features and benefits:
: Often identifies with VID: FFFF and PID: 1201 in factory states.
The chip integrates the Configuration Channel (CC) logic. It connects to the Vconn power line inside the USB-C plug. When a USB-C connector is plugged in, the Vconn line powers the YC2019, which then communicates via the CC line to verify cable capabilities before any high-power current flows.
