STSPIN840 datasheet(19/28 Pages) STMICROELECTRONICS

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STSPIN840 数据表(PDF) 19 Page - STMicroelectronics

部件名	STSPIN840

功能描述	Compact dual brushed DC motor driver

PDF	28 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

19 / 28 page

DocID031835 Rev 1

19/28

STSPIN840

Detailed description

Considering tdischarge is normally significantly lower than tcharge, its contribution is negligible

and the disable time is almost equal to tcharge only:

Equation 3

Where VDD is the pull-up voltage of REN resistor.

The recommended value for REN and CEN are respectively 39 k and 10 nF that allow

obtaining 300 µs disable time.

Figure 10. Disable time versus REN and CEN values (VDD = 3.3 V)

tDIS REN CEN In



VDD REN I



–

 V

RELEASE

–

VDD REN I



–

 V

–

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

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