power management

  1. F

    PMIC

    Hi, I am looking for a 3 input 1 output pmic Everything I am finding is way over complicated for my needs. 2x ~5v & 1x 4.5-60v The output will go in to a Buck for a final 3v3 @2A I really dont want any I2C or any external control at all - simplicity is the key. Tempted to just use diodes...
  2. Vizide

    36V Li-Ion battery Load Cutoff/Battery Charge circuit issue

    Problem: I have a 10s 36V li-ion battery pack powering my load (resistor used as example). When the charger is connected I would like the load to be cutoff as well as charge the battery. In my current set up I have the load being cut off when the charger is connected through the pmos but the...
  3. H

    MCP73871 and TPS61090 Troubleshooting

    I apologize in advance if I violate any forum conventions here. If that happens I will adapt postings accordingly moving forward. Context: I have been working on a PCB design that incorporates the TPS61090 (Boost converter) and MCP73871 (Charge controller) of Adafruit's Powerboost1000C. I've...
  4. R

    Advice on powering my diy guitar amplifier

    Hello, my name is matt. I have a few questions about supplying power to my audio amplifier projects. I have made 4 Bluetooth speakers and 1 small guitar amplifier so far. All of the Bluetooth speakers have been powered by a 5v battery power supply. Simple Bluetooth amplifier boards and a...
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