AZ4012-01F

Transient Voltage Suppressing Device

For ESD/Transient Protection

Revision 2015/01/29

©2015 Amazing Micro.

4

www.amazingIC.com

Applications Information

ESD Protection for Battery Contact

The AZ4012-01F can be used to protect

the Battery Contact. The ESD protection

scheme for typical Li-ion battery pack is

shown in Fig. 1. In the Fig. 1, the pin 2 of

AZ4012-01F should be connected directly to

a ground plane (Pack- terminal) on the board.

The pin1 of AZ4012-01F connected to the

terminal of Pack+.

All the path lengths connected to the pins of

AZ4012-01F should be kept as short as

possible to minimize parasitic inductance in

the board traces.

In order to obtain enough suppression of

ESD induced transient, good circuit board is

critical. Thus, the following guidelines are

recommended:

Minimize the path length between the

protected lines and the AZ4012-01F.

Place the AZ4012-01F near the input

terminals

or

connectors

to

restrict

transient coupling.

The ESD current return path to ground

should be kept as short as possible.

Use ground planes whenever possible.

NEVER route critical signals near board

edges and near the lines which the ESD

transient easily injects to PCB internal

circuit.

1

2

Fig. 1 ESD protection scheme for a typical Li-ion battery pack by using AZ4012-01F.