Power Consumption (ESP32)

Operating Modes

Operating Mode	Nom. Value	Unit
Modem Sleep (CPU active, Freq = 240 MHz)	30–68	mA
Modem Sleep (CPU active, Freq = 160 MHz)	27–44	mA
Modem Sleep (CPU active, Freq = 80 MHz)	20–31	mA
Light Sleep	0.8	µA
Deep Sleep (ULP active)	150	µA
Deep Sleep (ULP periodically active, 1% duty)	100	µA
Deep Sleep (RTC timer, RTC memory enabled)	10	µA
Deep Sleep (RTC timer)	5	µA
Power Off	1	µA

When the Wi-Fi communication mode becomes active, the system exits “Modem Sleep” mode and enters active mode; accordingly, power consumption values change.
In “Modem Sleep” mode, the CPU frequency automatically changes depending on the connected loads and the internal peripherals in use.
In “Deep Sleep (ULP active)” mode, while the ULP coprocessor is running, internal peripherals such as GPIO and I2C can continue their operational activities.
In “Deep Sleep (ULP periodically active)” mode, the system operates periodically and performs ADC readings with a 1% duty cycle.

Communication Mode	Nom. Value	Unit
Transmitter (802.11b, DSSS 1 Mbps, POUT = +19.5 dBm)	240	mA
Transmitter (802.11g, OFDM 54 Mbps, POUT = +16 dBm)	190	mA
Transmitter (802.11n, OFDM MCS7, POUT = +14 dBm)	180	mA
Receiver (802.11b/g/n)	95–100	mA
Transmitter (BT/BLE, POUT = 0 dBm)	130	mA
Receiver (BT/BLE)	95–100	mA

All measurements were performed at an ambient temperature of 25 °C with a 3.3 V supply voltage. Measurements in transmitter mode were conducted with a 50% duty cycle.