L9945 datasheet(1/151 Pages) STMICROELECTRONICS

部品番号	L9945

部品情報	Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems

PDF	151 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	http://www.st.com

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1 / 151 page

TQFP64 exposed pad down

GADG1606171506PS

Features

•

AEC-Q100 qualified

•

12 V and 24 V battery systems compliance

•

3.3 V and 5 V logic compatible I/O

•

8-channel configurable MOSFET pre-driver

–

High-side (N-channel and P-channel MOS)

–

Low-side (N-channel MOS)

–

H-bridge (up to 2 H-bridge)

–

Peak & Hold (2 loads)

•

Operating battery supply voltage 3.8 V to 36 V

•

Operating VDD supply voltage 4.5 V to 5.5 V

•

All device pins, except the ground pins, withstand at least 40 V

•

Programmable gate charge/discharge currents for improving EMI behavior

•

Individual diagnosis for:

–

Short circuit to battery

–

Open load

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Short circuit to ground

•

Highly flexible overcurrent sensing implementation

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Possibility of monitoring external MOS drain to source voltage

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Possibility of monitoring voltage on external shunt resistor

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64 programmable overcurrent thresholds independent for each channel

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Ultra-fast output shutdown in case of overcurrent

•

Current limitation for H-Bridge configuration

•

32-bit SPI protocol available for configuration and diagnostics

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Failures latched even if they occur during diagnostics reading

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Daisy chain operation

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SDO protected against overvoltage

•

Safety features

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Fast switch off redundant output disable through two external pins

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Built In Self Test (BIST) for logic operation

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Hardware Self Check (HWSC) for VDD5 overvoltage comparator

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Configurable Communication Check (CC) watchdog timer available

–

Disable feedback through bi-directional pin

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Highly redundant output monitoring through dedicated SPI registers

•

10-bit ADC for battery and die temperature measurements available through SPI

•

VDD5 monitoring for over/under voltage

•

VPS (battery) monitoring for under voltage

•

ISO26262 systems compatible

Product status link

L9945

Product summary

Order code

Package

Packing

L9945

TQFP64

(exposed

pad down)

Tray

L9945TR

Tape and

reel

Automotive fully configurable 8-channel High/Low side MOSFET pre-driver

suitable for 12 V and 24 V systems

L9945

Datasheet

DS12275 - Rev 8 - December 2019

For further information contact your local STMicroelectronics sales office.

www.st.com

同様の部品番号 - L9945

メーカー	部品番号	データシート	部品情報
STMicroelectronics	L9945	5Mb / 144P	Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems 19-May-2025
	L9945TR	5Mb / 144P	Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems 19-May-2025
	L9945	5Mb / 144P	Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems 19-May-2025

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