Can use a LM1117 3.3 voltage chip at the same time give a STM32F411RET6 and three pieces of TDC - GP22 chip power supply

CodePudding user response:

Please see related chip manual electrical parameters,

If with a piece of a STM32F411RET6 and LM1117 3.3 three piece of TDC - GP22 chip power supply (no other peripherals), in the current side, is enough,
But want to consider other electrical parameters such as voltage ripple,

The best look at chip manual,

CodePudding user response:

Power supply power supply chip or inappropriate basically see the output voltage and the maximum current can meet the needs of subsequent power devices,
In this case the output LM1117 3.3 3.3 V 1 a maximum output current, voltage on the STM32 and TDC - GP22 is can use 3.3 V power supply, so the voltage meet the conditions, check the STM32 and TDC - GP22 generally total working current is lower than 1 a, also meet the requirements, so the current conclusion: the scheme is feasible
Note: pay attention to the power supply filter, LM1117 3.3 out of the current best is divided into two road, to the stm32 and TDC - GP22 respectively, each separated using magnetic beads or inductance for all the way to prevent entangled two power supplies, also before each device power filtering decoupling operation,

CodePudding user response:

Completely enough. Are low-power chips,