MP1476GTF ATUN SOT563 Buck Converter with Internal Power MOSFET

MP1476GTF ATUN SOT-563 Synchronous Buck Converter | 2A Step-Down Regulator with Internal Power MOSFETs for Mining Hashboard and Control-Board Rails

The MP1476GTF ATUN is a fully integrated synchronous buck converter in SOT-563 package with internal high-side and low-side power MOSFETs. Used widely on ASIC mining hashboards and control boards to step a 5V / 12V upstream rail down to a tightly regulated lower voltage — typical use cases include MCU core supply, FPGA peripheral rail, and auxiliary logic rails on Antminer / Whatsminer / Avalon control boards.

Wide 4.2V to 18V input range means it works directly from 5V, 12V or intermediate rails without an extra pre-regulator. 2A continuous output with internal MOSFET on-resistance of 126mΩ (top) / 58mΩ (bottom) and 800kHz switching frequency — small inductor and capacitor footprint for compact board real estate. Output adjustable down to 0.8V reference for modern MCU core voltages. Built-in protections (SCP, OCP, UVP, thermal shutdown) plus internal soft start protect downstream loads through fault events.

When to Replace the MP1476GTF

• Hashboard or control board rail dead or out of regulation — buck converter failed, output stuck high / low / oscillating.
• Visible burn or discoloration on the MP1476GTF package — thermal or transient damage, direct replacement.
• Erratic boot behaviour on a control board after a power event — soft-start circuit damaged, buck not coming up clean.
• Excessive ripple visible on a downstream rail — output capacitor degraded or buck controller drifting, swap to restore clean regulation.
• Preventive rework during board refurbishment — refresh the buck converters during a full electrolytic + IC overhaul.

MP1476GTF Buck Converter Specifications

FAQ — MP1476GTF Buck Converter

Q: What's the difference between this MP1476GTF and the older MP1476?
A: The GTF variant adds ATUN package marking and the SOT-563 footprint with internal soft start — drop-in for the original MP1476 footprint with improved startup behaviour. Verify the silkscreen marking matches what your board originally had.

Q: How do I diagnose buck converter failure without a scope?
A: Probe the input and output voltages on a known-working board vs your suspect. Healthy: input around 5V or 12V, output at the rail's nominal voltage (e.g., 1.8V, 3.3V). Failed: output stuck at zero, stuck at input voltage, or fluctuating significantly. Visible burn marks catch the obvious cases.

Q: Is the SOT-563 footprint hand-solderable?
A: SOT-563 is small (3×1.5mm) — hot-air rework or a fine-tip iron with magnification is recommended. Standard equipment for any modern hashboard repair bench.

Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com with your monthly volume. Tube and reel quantities are stocked.

Related products

• MP1471GJZ Buck Switching Regulator IC – Positive Adjustable
• MP1484EN 38V Adjustable Step-Down Switching Regulator
• SY8003ADFC Step-Down Power Chip – Antminer S19 Pro
• SY7304DBC Current-Mode Boost Regulator – S19 Pro Hashboard

Repair shops stocking MP1476GTF buck converters by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.