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Block diagram and pin description

1.1

Block diagram

The L9691 IC is an application specific standard component for airbag system chip. Its main functions include

power management, deployment drivers (supporting both squib and low-energy actuator loads), deployment

voltage regulators, remote sensor interfaces (supporting PSI-5 satellite sensors), diagnostics, deployment arming,

hall-effect/switch sensor interfaces, general purpose output low-side drivers, watchdog, LIN interface. A simplified

block diagram for this IC is shown in the Figure 1.

Figure 1. Block diagram

L9691

Block diagram and pin description

DB4803 - Rev 2

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