L9659 datasheet(1/51 Pages) STMICROELECTRONICS

Numer części	L9659

Szczegółowy opis	Octal squib driver ASIC for safety application

PDF	51 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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1 / 51 page

September 2013

Doc ID 022048 Rev 2

1/51

1

L9659

Octal squib driver ASIC for safety application

Features

■ 8 deployment drivers with SPI selectable firing

current and times

■ Capability to deploy the squib with 1.2 A

(min)/2 ms, 1.75 A (min)/1.0 ms and 1.75 A

(min)/0.65 ms between VRES of 7 V to 37 V

■ Capability to deploy the squib with 1.5 A

(min)/2 ms between VRES of 7 V to 25 V

■ Firing capability to deploy all channels

simultaneously

■ Independently controlled high-side and low-

side MOS for diagnosis

■ Analog output available for resistance measurement

■ Squib short to ground, short to battery and

MOS diagnostic available on SPI register

■ Capability to deploy the squib the low side

MOS is shorted to ground

■ 4 fire enable inputs

■ 5.5 MHz SPI interface

■ Low voltage internal reset

■ 2 kV ESD capability on all pins

■ Package: LQFP64

■ Technology: ST proprietary BCD5 (0.65 µm)

■ RoHS compliant

Description

The L9659 is intended to deploy up to 8 squibs.

Squib drivers are sized to deploy 1.2 A minimum

for 2 ms, 1.75 A minimum for 1 ms and 1.75 A

minimum for 0.65 ms during load dump along with

1.5 A minimum for 2 ms for VRES voltages less

than 25 V.

Full diagnostic capabilities of the squib interface

are provided.

LQFP64 (10x10x1.4mm)

Table 1.

Device summary

Order code

Amb. temp range,

CPackage

Packing

L9659

-40 to +95

LQFP64

Tray

L9659TR

-40 to +95

LQFP64

Tape and reel

www.st.com

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