Rev 2

AN2229/10-05

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8

AN2229

APPLICATION NOTE

Startup Behavior L9903/L9904

Introduction

Purpose of the Application Note is to detail the startup behaviour of L9903 and L9904 devices and to

explain a correct initialization sequence, possibly being necessary when application configuration is

different from the one suggested inside datasheet.

In fact, in case an additional, external diagnostic structure is used, it may happen that after a first

connection of the supply voltage, and before first enabling of the device, the measurement results of

these diagnostic structure is not precise.

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