L9300 datasheet(2/178 Pages) STMICROELECTRONICS

2 / 178 page

Main features details

1.1

Supplies

1.1.1

VDD1 regulator

VDD1 is a buck regulator with internal N-ch FET that can provide 6.5 V or 5 V with 3% accuracy.

1.1.2

VDD2 regulator

VDD2 is a configurable internal regulator. It can work as tracking regulator (± 20 mV) or linear 5 V regulator (2%

accuracy) and can provide up to 200 mA. VDD2 regulator is short to battery protected

1.1.3

VDD3 regulator

VDD3 is a linear regulator based on an external pass transistor. The output voltage selection is obtained through

an external voltage divider. The accuracy of VDD3 is ± 2%.

1.1.4

VDD4 regulator

VDD4 is a linear regulator based on an external pass transistor. The output voltage selection is obtained through

an external voltage divider. The accuracy of VDD4 is ± 2%.

1.1.5

TRK 1, 2, 3, 4

TRK1, TRK2, TRK3, TRK4 are 4 additional configurable tracking regulators. The regulators track the TRK_SEL

pin voltage with an error of ± 20 mV. The tracking regulator outputs can be configured to be used alternatively as

wheel speed interfaces.

1.2

Valve drivers

1.2.1

Current controlled channels

The device provides 6 current controlled channels. Each channel is based on a LS/HS driver structure. The

device is able to work as low–side driver (with high–side active freewheeling) or as high–side driver (with low–side

active freewheeling).

1.3

Others

1.3.1

High–side pre-driver

The device provides 2 High–side pre-drivers, and one of them is able to work in PWM mode up to roughly 18 kHz.

1.3.2

Watchdog

Watchdog functionality to monitor CPU activity.

1.3.3

CAN

The device includes a CAN interface.

1.3.4

RESET

The device includes two Reset pins. Both of them can be used as output while one of them can be used also as

input.

1.3.5

GPO

The device provides a low–side open drain general purpose output. This output can be used as a standard low–

side output or as a configurable interrupt generator through a dedicated SPI bit in the Service Enable register.

L9300

Main features details

DS12258 - Rev 5

page 2/178

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