AM7232 datasheet(7/16 Pages) AMTEK

Part #	AM7232

Description	Single Phase Full-Wave Motor Driver for Fan Motor

PDF	16 Pages

Scroll/Zoom	100%

Manufacturer	AMTEK [AMtek SEMICONDUCTORS CO., LTD]

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

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7 / 16 page

AM7232

Motor Driver ICs

http://www.amtek-semi.com

OCT.. 2

3 V

1..0

Specifications subject to change without notice

- 7 -

 Application circuit

Fig.2 Application circuit

Notes:

1. Reverse connection of power supply may break the device. A countermeasure is needed such

as using reverse current protection diode (D1) between power supply and VCC terminal.

The BEMF causes re-circulate current to power supply, when power-on or output changes. It

may cause VCC terminal to raise voltage, especially using reverse current protection diode (D1)

because there is no way to return current back to power supply. In such case, please take

necessary measures like below.

2. Connect a Zener diode (ZD1) between VCC and GND terminal not to exceed the absolute

maximum rating voltage.

3. Connect a capacitor (C1) between VCC and GND terminal to make a path of return current to

power supply.

4. Open drain output. A pull-up resistances of 10kΩ should be inserted.

AM7232 Datasheet(PDF) 7 Page - AMtek SEMICONDUCTORS CO., LTD