Features
 AEC-Q100 qualified
 Functional safety concept for ISO26262
compliance
 4 High-side and Low-side gate pre-drivers for 8
external power NFETs
 Overcurrent protection with programmable
thresholds
 Programmable and NFET independent
thresholds for VDS monitoring
 10 integrated Fully differential amplifiers with
low offset, very precise gain, and self-test
 10 separate ADC channels for digital
processing of motor current and voltage
measurement
 32-bits - 10 MHz SPI with CRC for internal
setting, self-test and diagnostics
 Full drive of external power NFETs down to
5.5 V battery input voltage
 Monitoring on Main power supply and
continuous BIST for internal regulators
 Double Bandgap reference
 4 General Purpose I/O stages (GPIO)
 Button Interface (9 configurable I/O pins) for
monitoring and diagnostics in Normal and
Sleep Mode.
 2 Motor Speed Sensors (MSS) interfaces to
acquire speed information feedbacks via
external Hall sensors.
 System wake-up in Sleep Mode
 Watchdog (configurable via SPI)

Description
The L9370 targets the specific application of
electric parking braking, suitable for system
configuration in cable-puller or Motor Gear Unit
(MGU).
The cores are two H-bridge driver stages to drive
8 external FETs for the rear wheels brakes
actuators. The stages are fully driven and
configurable via SPI, also in PWM control mode
and protected against overcurrent, with drainsource
and gate-source voltages monitoring.
A synchronized motor voltages and currents
acquisition, is performed via full differential
amplifiers with programmable and precise gain
and low offset and 10 ADC sigma-delta
modulators.
Two configurable HS/LS stages are present with
programmable output voltage to drive LED arrays,
with feedforward regulation.
2 Motor Speed Sensor interfaces (MSS) are
available to acquire position feedback from brake
actuators (shared with Lamp driver stage and
GPIO).
The set of the interfaces is completed by 4 GPIO
(General Purpose I/O) pins and a button interface
allows to manage specific customer requirements
from Electronic parking braking (EPB) button
console both in Normal and Sleep Mode.