AM8919 datasheet(9/12 Pages) AMTEK

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AM8919 Datasheet(PDF) 9 Page - AMtek SEMICONDUCTORS CO., LTD

Part #	AM8919

Description	3-phase Sensor-less Fan Motor Driver

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	AMTEK [AMtek SEMICONDUCTORS CO., LTD]

Direct Link	http://www.amtek-semi.com

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9 / 12 page

AM8919

Motor Driver ICs

http://www.amtek-semi.com

JJu

ull.. 2

4 V

1..1

Specifications subject to change without notice

- 9 -

11) Current limiter

Current limiter voltage setting is 0.25V. Connect resistance to ground to determine the current

limit value. The resistance path needs wider and ground side make shorter to GND.

The formula is RNF=0.25V/current limit target. (0.25Ω=0.25V/1A)

12) Soft start function

The motor could be smoothly start-up when Soft start pin connecting a capacitor to ground.

The function release when the voltage reaches 2.0V or more. If the soft start function is not

used, keeps this pin floating.

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