AN4402 datasheet(1/39 Pages) STMICROELECTRONICS

Il numero della parte	AN4402

Spiegazioni elettronici	Multichannel drivers driving inductive loads

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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November 2013

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AN4402

Application note

Multichannel drivers driving inductive loads

with L99MC6 and L9733

Introduction

The L99MC6 and the L9733 are respectively hexa and octal multi-channel drivers capable

of driving various types of loads: resistive, inductive, capacitive loads and LEDs. They

integrate an SPI interface for a high level of configurability, offering detailed device

diagnostics and protection features such as overtemperature, overcurrent detection, in

order to support robust automotive designs.

The output stages of these flexible devices consist of n-channel MOSFETs. They both have

an internal charge pump which allows all the outputs of the L9733 and three outputs of the

L99MC6 (outputs 1, 2, 3) to control loads either in high-side or in low-side configuration

without additional components. The L99MC6 outputs 4, 5 and 6 are fixed low-side drivers.

Figure 1. Block diagrams on the L99MC6 and L9733

www.st.com

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