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DocID022152 Rev 4 89/185
STM32F405xx, STM32F407xx Electrical characteristics
Figure 28. Typical V
BAT
current consumption (LSE and RTC ON/backup RAM OFF)
Table 25. Typical and maximum current consumptions in V
BAT
mode
Symbol Parameter Conditions
Typ Max
(1)
Unit
T
A
= 25 °C
T
A
=
85 °C
T
A
=
105 °C
V
BAT
=
1.8 V
V
BAT
=
2.4 V
V
BAT
=
3.3 V
V
BAT
= 3.6 V
I
DD_VBA
T
Backup
domain
supply
current
Backup SRAM ON, low-speed
oscillator and RTC ON
1.29 1.42 1.68 6 11
µA
Backup SRAM OFF, low-speed
oscillator and RTC ON
0.62 0.73 0.96 3 5
Backup SRAM ON, RTC OFF 0.79 0.81 0.86 5 10
Backup SRAM OFF, RTC OFF 0.10 0.10 0.10 2 4
1. Based on characterization, not tested in production.
MS19990V1
0
0.5
1
1.5
2
2.5
3
3.5
0 102030405060708090100
IVBAT in (μA)
Te mp e r at ur e i n ( ° C )
1.65V
1.8V
2V
2.4V
2.7V
3V
3.3V
3.6V