Espressif Systems ESP32-S2-WROOM User Manual page 10

4. Electrical Characteristics
4.1 Current Consumption Characteristics
With the use of advanced power-management technologies, the module can switch between different power
modes. For details on different power modes, please refer to Section RTC and Low-Power Management in
S2 User Manual.
Work mode
Active (RF working)
Note:
• The current consumption measurements are taken with a 3.3 V supply at 25 °C of ambient temperature at the RF
port. All transmitters' measurements are based on a 50% duty cycle.
• The current consumption figures for in RX mode are for cases when the peripherals are disabled and the CPU idle.
Work mode
Modem-sleep
Light-sleep
Deep-sleep
Power off
Note:
• The current consumption figures in Modem-sleep mode are for cases where the CPU is powered on and the cache
idle.
• When Wi-Fi is enabled, the chip switches between Active and Modem-sleep modes. Therefore, current consump-
tion changes accordingly.
• In Modem-sleep mode, the CPU frequency changes automatically. The frequency depends on the CPU load and
the peripherals used.
• During Deep-sleep, when the ULP co-processor is powered on, peripherals such as GPIO and I²C are able to
operate.
• The "ULP sensor-monitored pattern" refers to the mode where the ULP coprocessor or the sensor works periodi-
cally. When touch sensors work with a duty cycle of 1%, the typical current consumption is 7 µA.
Espressif Systems
Table 7: Current Consumption Depending on RF Modes
802.11b, 20 MHz, 1 Mbps, @ 22.31dBm
802.11g, 20 MHz, 54 Mbps, @ 25.00dBm
TX
802.11n, 20 MHz, MCS7, @ 24.23dBm
802.11n, 40 MHz, MCS7, @ 22.86 dBm
802.11b/g/n, 20 MHz
RX
802.11n, 40 MHz
Table 8: Current Consumption Depending on Work Modes
Description
240 MHz
The CPU is
160 MHz
powered on
Normal speed: 80 MHz
The ULP co-processor is powered on.
ULP sensor-monitored pattern
RTC timer + RTC memory
RTC timer only
CHIP_PU is set to low level, the chip is powered off.
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Description
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ESP32-S2-WROOM & ESP32-S2-WROOM-I User Manual V0.5
ESP32-
Average Peak
190 mA 310 mA
145 mA 220 mA
135 mA 200 mA
120 mA 160 mA
63 mA 63 mA
68 mA 68 mA
Current consumption (Typ)
22 mA
17 mA
14 mA
550 µA
220 µA
7 µA @1% duty
10 µA
5 µA
0.5 µA