2025-11-30 8:45 PM - edited 2025-11-30 9:07 PM
Hi,
I have couple of questions regarding the LORA Tx numbers specified in the ds for the stm32wle5.
we are using VDD=3.3V , 22 dBm , ~928 Mhz LORA. 32 Mhz TCXO
we are NOT using the SMPS .
table 29 in the ds mentions that typical current for the stm32 device in Tx High power mode should be 120 mA.
I want to know what should be the total current for all chip supplies .
I have couple of questions:
1. If I understand correctly - this table assumes all chip interfaces are disabled. if I have UART enabled and a few other io's toggling - How much current should I add to the 120 mA number ? (roughly)
2. since we are NOT using SMPS mode . How much current should I add to the 120 mA number ? (roughly)
3. General question - should I see different subghz current consumption when transmitting LORA vs when transmitting CW ?
4. Is there a more accurate way to estimate what should be the total chip current in LORA RX MODE and LORA TX MODE ?
Thank you,
Viola