STM32H7B3AI datasheet(99/238 Pages) STMICROELECTRONICS

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Symbol

Parameter

Conditions

Typ

LDO

Typ

SMPS

Max(1)(2)

Unit

TJ =

25 °C

TJ =

85 °C

TJ =

105 °C

TJ=

130 °C

IDD(Stop) Stop, DStop2

Flash memory in low -power

mode, memory shut-off enable

SVOS3

Main(3)

0.146

0.337

0.30

1.55

2.63

5.04

SVOS3 LP

0.100

0.040

0.26

1.51

2.58

4.96

SVOS4

0.085

0.033

0.19

1.15

2.01

3.98

SVOS5

0.075

0.028

0.12

0.80

1.46

3.02

1. Guaranteed by characterization results.

2. The maximum values are given for LDO regulator ON. Refer to Section 6.3.3 SMPS step-down converterfor the SMPS maximum current

consumption.

3. The SMPS is unnecessarily ON in System Stop mode, leading to an additional consumption. It is recommended to use SVOS3 LP mode to

optimize power consumption.

Table 41. Typical current consumption RAM shutoff in Stop mode

Symbol

Parameter

Conditions

Typ LDO

Unit

SVOS3 LP SVOS4 SVOS5

∆IDD(Stop) Stop, Dstop or Dstop2

AXISRAM1 shutoff power consumption (power consumption

reduction when AXISRAM1 shutoff is enabled)

3.00

1.80

3.00

µA

AXISRAM2 shutoff power consumption (power consumption

reduction when AXISRAM2 shutoff is enabled)

4.40

2.70

4.40

AXISRAM13 shutoff power consumption (power consumption

reduction when AXISRAM3 shutoff is enabled)

4.40

2.70

4.40

AHBSRAM1 shutoff power consumption (power consumption

reduction when AHBSRAM1 shutoff is enabled)

0.90

0.50

0.70

AHBSRAM2 shutoff power consumption (power consumption

reduction when AHBSRAM2 shutoff is enabled)

0.90

0.50

0.70

ITCM and ETM shutoff power consumption (power consumption

reduction when ITCM and ETM shutoff is enabled)

1.00

0.60

0.90

GFXMMU and JPEG shutoff power consumption (power

consumption reduction when GFXMMU and JPEG shutoff is

enabled)

0.20

0.10

High-speed interface USB and FDCAN shutoff power consumption

(power consumption reduction when High-speed interface USB and

FDCAN shutoff is enabled)

0.20

0.10

SRDSRAM shutoff power consumption (power consumption

reduction when SRDSRAM shutoff is enabled)

0.30

0.40

Table 42. Typical and maximum current consumption in Standby mode

Symbol

Parameter

Conditions

Typ

Max (3.6V)(1)

Unit

Backup

SRAM

RTC &

LSE(2)

1.62

2.4

V(3)

3 V(3)

3.3

V(3)

TJ =

25 °C

TJ =

85 °C

TJ =

105 °C

TJ =

130 °C

IDD

(Standby)

Supply current in

Standby mode,

IWDG OFF

OFF

1.97

2.76

3.02

3.30

4.0

11.0

22.0

57.0

µA

OFF

2.78

3.69

4.02

4.40

5.4

13.0

25.0

64.0

OFF

2.46

3.37

3.73

4.07

5.0

12.2

23.3

59.0

3.27

4.30

4.73

5.17

6.4

14.2

26.3

66.0

1. Guaranteed by characterization results.

2. The LSE clock is in low-drive mode.

STM32H7B3xI

Operating conditions

DS13139 - Rev 8

page 99/238

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