STM32H757AI datasheet(114/251 Pages) STMICROELECTRONICS

部件名	STM32H757AI

功能描述	Dual 32-bit Arm® Cortex®-M7 up to 480MHz and -M4 MCUs, 2MB Flash, 1MB RAM, 46 com. and analog interfaces, SMPS, DSI, crypto

PDF	251 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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114 / 251 page

Electrical characteristics

STM32H757xI

114/251

DS12931 Rev 1

6.3.4

Operating conditions at power-up / power-down

Subject to general operating conditions for TA.

Table 28. Operating conditions at power-up / power-down (regulator ON)

ISAT

DC current at which the inductance drops 30% from

its value without current.

1.7 A

IRMS

Average current for a 40 °C rise: rated current for

which the temperature of the inductor is raised 40°C

by DC current

1.4 A

Table 27. SMPS step-down converter characteristics for external usage

Parameters

Conditions

Min

Typ

Max

Unit

VDDSMPS(1)

1. The switching frequency is 2.4 MHz±10%

VOUT = 1.8 V

2.3

3.6

VOUT = 2.5 V

3.6

VOUT(2)

2. Including line transient and load transient.

Iout=600 mA

2.25

2.5

2.75

1.62

1.8

1.98

IOUT

internal and external usage

600

External usage only(3)

3. These characteristics are given for SDEXTHP bit is set in the PWR_CR3 register.

600

RDSON

100

120

mΩ

IDDSMPS_Q

Quiescent current

220

µA

TSMPS_START

VOUT = 1.8 V

225

µs

VOUT = 2.5 V

300

Table 26. Characteristics of SMPS step-down converter external components

Symbol

Parameter

Conditions

Symbol

Parameter

Min

Max

Unit

tVDD

VDD rise time rate

∞

µs/V

VDD fall time rate

∞

tVDDA

VDDA rise time rate

∞

VDDA fall time rate

∞

tVDDUSB

VDDUSB rise time rate

∞

VDDUSB fall time rate

∞

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