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ashleyreddy

ashleyreddy

what about the mcu
101 days

flux

1:17

Clarifying MCU options.

Accessing knowledge base.

Linking components and references.

Providing Integration Suggestions.

Clarifying Control Options.

Linking Components and MCU Suggestions.

Great question. Do you want a recommendation for which MCU to use, or guidance on how to hook an MCU up to this power module? A couple quick choices by need:
Integrating an MCU with your module:
  • Power: Feed the MCU’s 3.3 V rail from 3V3. Budget current so total continuous load stays within about 75% of your regulator’s rating.
  • Enable control: EN is pulled up to VIN via R1. If you want the MCU to shut the rail off, have a GPIO (open‑drain or via a small transistor) pull EN low; header J1 Pin_1 breaks EN out.
  • Power‑good: Use U1 PG to hold MCU in reset or as a “rail is OK” input; add a pull‑up on the MCU reset pin if you tie PG into reset.
  • Decoupling: Place a 100 nF ceramic within 5 mm of each MCU VCC/GND pair, and add a nearby bulk ceramic capacitor.
  • I2C, if used: Add 4.7 k pull‑ups to 3V3 and keep total bus capacitance ≤ 400 pF.
Tell me your must‑haves (wireless? GPIO count? sleep current target? package size), and I’ll pick a concrete MCU and map the exact connections to J1, EN, PG, and 3V3.
Clarify MCU requirements
Ask for hookup details
Decoupling clarification
I2C details
Low-power focus
101 days

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    Buck Boost 3.3V 500mA Physical Module

    Buck Boost 3.3V 500mA Physical Module thumbnail
    A buck boost converter that can be powered from a Li-Ion battery and output 3.3V @ 500mA. Powered by the TPS63051YFFR and in the same package as a standard Adafruit buck converter.
    Expect to squeeze around 5-10% SoC from a typical Li-Ion battery.
    Input Voltage Range: 2.5V to 5.5V
    Assembled at pcbway.com

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