STM32F031X4 datasheet(101/106 Pages) STMICROELECTRONICS

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STM32F031X4 датащи(PDF) 101 Page - STMicroelectronics

номер детали	STM32F031X4

подробное описание детали	ARM-based 32-bit MCU with up to 32 Kbyte Flash, 9 timers, ADC and communication interfaces, 2.0 - 3.6 V

PDF	106 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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101 / 106 page

DocID025743 Rev 4

101/106

STM32F031x4 STM32F031x6

Package information

102

Assuming the following application conditions:

Maximum ambient temperature TAmax = 100 °C (measured according to JESD51-2),

IDDmax = 20 mA, VDD = 3.5 V, maximum 20 I/Os used at the same time in output at low

level with IOL = 8 mA, VOL= 0.4 V

PINTmax = 20 mA × 3.5 V= 70 mW

PIOmax = 20 × 8 mA × 0.4 V = 64 mW

This gives: PINTmax = 70 mW and PIOmax = 64 mW:

PDmax = 70 + 64 = 134 mW

Thus: PDmax = 134 mW

Using the values obtained in Table 68 TJmax is calculated as follows:

–

For LQFP48, 55 °C/W

TJmax = 100 °C + (55 °C/W × 134 mW) = 100 °C + 7.37 °C = 107.37 °C

This is above the range of the suffix 6 version parts (–40 < TJ < 105 °C).

In this case, parts must be ordered at least with the temperature range suffix 7 (see

Section 8: Part numbering) unless we reduce the power dissipation in order to be able to

use suffix 6 parts.

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