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STM32H562II Datasheet(PDF) 130 Page - STMicroelectronics

Part # STM32H562II
Description  Arm® Cortex®-M33 32-bit MCU TrustZone® FPU, 375 DMIPS, 250 MHz, 2-Mbyte flash, 640-Kbyte RAM, math accelerators
PDF  270 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32H562II Datasheet(HTML) 130 Page - STMicroelectronics

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Electrical characteristics
STM32H562xx and STM32H563xx
130/270
DS14258 Rev 5
5.3.3
SMPS step-down converter
The devices embed a high power efficiency SMPS step-down converter requiring external
components.
The SMPS current consumption can be determined using the following formula based on
the maximum LDO current consumption provided in Section 5.3.7:
IDDSMPS = IDDLDO × VCORE / (VDD × efficiency)
IDDLDO is the current in LDO configuration given in the following tables, VCORE is the digital
core supply (VCAP), and efficiency is defined in the following curves.
Table 22. Supply voltage and maximum frequency configuration
Symbol
Parameter
Conditions
CEXT
External capacitor for LDO enabled
2.2 μF(1)
1. This value corresponds to CEXT typical value. A variation of ±20% is tolerated
ESR
E
quivalent series resistance of the external capacitor
< 100 mΩ
Table 23. Characteristics of SMPS step-down converter external components
Symbol
Parameter
Conditions
Min
Typ
Max Unit
Cin
Capacitance of external capacitor on VDDSMPS pins
-
-
4.7(1)
-µF
ESR of external capacitor
2.4 MHz
-
-
10
mΩ
Cfilt
Capacitance of external capacitor on VLXSMPS pin
-
-
220
-
pF
COUT
Capacitance of external capacitor on VCAP pin
-
-
10(1)
-µF
ESR of external capacitor
2.4 MHz
-
20
mΩ
L
Inductance of external inductor on VLXSMPS pin
-
-
2.2(1)
-µH
Series DC resistance
All packages
-
-
150
mΩ
WLCSP80 package,
VDDSMPS > 3 V
--
300
ISAT
DC current at which the inductance drops 30% from the
value without current
-1
-
-
A
IRMS
Average current for which the temperature of the
inductor is raised 40 °C by the DC current
-1
-
-
1. Tolerance: -50% and + 30% for all conditions.



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