Datasheet

DocID027107 Rev 6 91/202
STM32F446xC/E Electrical characteristics
175
Figure 21. Typical V
BAT
current consumption
(RTC ON/backup RAM OFF and LSE in low power mode)
Table 29. Typical and maximum current consumptions in V
BAT
mode
Symbol Parameter Conditions
(1)
Typ Max
(2)
Unit
T
A
= 25 °C
T
A
=
85 °C
T
A
=
105 °C
V
BAT
=
1.7 V
V
BAT
=
2.4 V
V
BAT
=
3.3 V
V
BAT
= 3.6 V
I
DD_VBAT
Backup
domain
supply
current
Backup SRAM ON, RTC ON
and LSE oscillator in low power
mode
1.46 1.62 1.83 6 11
µA
Backup SRAM OFF, RTC ON
and LSE oscillator in low power
mode
0.72 0.85 1.00 3 5
Backup SRAM ON, RTC ON
and LSE oscillator in high drive
mode
2.24 2.40 2.64 - -
Backup SRAM OFF, RTC ON
and LSE oscillator in high drive
mode
1.50 1.64 1.86 - -
Backup SRAM ON, RTC and
LSE OFF
0.74 0.75 0.78 5 10
Backup SRAM OFF, RTC and
LSE OFF
0.05 0.05 0.05 2 4
1. Crystal used: Abracon ABS07-120-32.768 kHz-T with a C
L
of 6 pF for typical values.
2. Guaranteed based on test during characterization.
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