AN4402 Datasheet, PDF (1/39 Pages) STMicroelectronics – Multichannel drivers driving inductive loads

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
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November 2013
DocID025557 Rev 1
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