AM7302

Motor Driver ICs

http://www.amtek-semi.com

5

Specifications subject to change without notice

- 9 -

1) Absolute maximum ratings

This product is produced with strict quality control, but destroyed in using beyond absolute maximum

ratings. Once IC destroyed, a failure mode cannot be defined (like short-mode or

open-mode).Therefore, physical security counter measure, like fuse, is to be given when a specific

mode to be beyond absolute maximum rating is considered.

2) Reverse connection of power supply

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

3) Power supply line

The BEMF causes re-circulate current to power supply, Please connect a capacitor between power

supply and GND as a route of re-circulate current. And please determine the capacitance after

confirmation that the capacitance does not causes any problems.

4) GND potential

The GND terminal should be the location of the lowest voltage on the chip.

5) Thermal design

The thermal design should allow enough margins for actual power dissipation.

6) Mounting failures

Mounting failures, such as misdirection or miss-mounts, may destroy the device.

The electrical short caused by falling particle, between outputs; power supply and output; or output

and ground, may damage the device.

7) Layout guide

<a> There are 2 Bars on AM7302 exposed pad, the advantage of these 2 bars is to detect if exposed

pad is well mounted on PCB ground.

<b> The PCB ground layout should be larger enough to cover exposed pad bar in order to detect

exposed pad is well mounted on PCB.

Please refer to following drawing

PCB ground layout should

be larger to cover exposed

pad bar