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STM32H7B3AI Datenblatt(PDF) 87 Page - STMicroelectronics

Teilenummer STM32H7B3AI
Bauteilbeschribung  32-bit Arm® Cortex®-M7 280 MHz MCUs, 2-Mbyte flash memory, 1.4-Mbyte RAM, 46 com. and analog interfaces, SMPS, crypto
PDF  238 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32H7B3AI Datenblatt(HTML) 87 Page - STMicroelectronics

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Table 27. SMPS step-down converter characteristics for external usage
Symbol
Conditions
Min
Typ
Max
Unit
VDDSMPS(1)
VOUT = 1.8 V
2.3
-
3.6
V
VOUT = 2.5 V
3
-
3.6
VOUT(2)
IOUT=600 mA
2.25
2.5
2.75
V
1.62
1.8
1.98
IOUT
internal and external usage
-
-
600
mA
External usage only(3)
-
-
600
RDSON
-
-
100
120
mΩ
IDDSMPS_Q
Quiescent current
-
220
-
µA
TSMPS_START
VOUT = 1.8 V
-
270
405
µs
VOUT = 2.5 V
-
360
540
1. The switching frequency is 2.4 MHz±10%
2. Including line transient and load transient.
3. These characteristics are given for SMPSEXTHP bit is set in the PWR_CR3 register.
The SMPS current consumption can be determined using the following formula based on the maximum LDO
current consumption provided in Section 6.3.7 Supply current characteristics:
IDDSMPS=IDDLDO× VCORE÷ VDD×efficency
where
IDDLDO is the current in LDO configuration given in the following tables
VCORE is the digital core supply (VCAP)
Efficiency is defined in the following curves.
STM32H7B3xI
Operating conditions
DS13139 - Rev 8
page 87/238



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