# Notes on programmable, multi-channel regulator ICs for Wii undervolting

regulator-comparison.md

Notes on programmable, multi-channel regulator ICs for Wii undervolting

• TPS65216
  • TL;DR
    • Pros: cheap, bonus LDO
    • Cons: inefficient, large footprint, no NVM
  • 3 x buck @ 1.8A, 1 x buck/boost @ 1.6A, 1 x LDO
  • 6 x 6mm QFN package
  • Push button monitor
  • No internal NVM, needs to be configured on boot
  • Requires beefy inductors (1.5uH)
  • Not great efficiency
  • Probably suitable for non-portable builds
  • $2.78
• LP8758-E0
  • TL;DR
    • Pros: tiny, efficient, built-in load current monitor
    • Cons: expensive, no NVM, BGA
  • 4 buck, 4A per channel
  • 2.9 x 2.15mm BGA package
  • Each channel has wide selectable voltage range
  • Load current monitor
  • No internal NVM, needs to be configured on boot
  • Very efficient at Wii voltages/currents
  • $5.83
• LP87524-Q1
  • TL;DR
    • Pros: efficient, built-in load current monitor, QFN
    • Cons: expensive, no NVM
  • 4 buck, 10A max
  • 4.5 x 5mm QFN package
  • Load current monitor
  • No internal NVM
  • $5.72
• LP8764
  • TL;DR
    • Pros: efficient, persistent settings
    • Cons: expensive
  • 4 buck outputs, 5A per channel
  • 5.5 × 5.00mm QFN package
  • Each channel has wide selectable voltage range
  • NVM registers, no need for external MCU
  • $7.19

3V3 on a portable might need a buck/boost regulator:

• TPS63810
  • Programmable 2.5A buck/boost converter