L9679P datasheet(246/272 Pages) STMICROELECTRONICS

No. de pieza	L9679P

Descripción Electrónicos	Automotive advanced airbag IC for mid/high end applications

PDF	272 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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246 / 272 page

Electrical characteristics

L9679P

246/272

DocID029275 Rev 1

Table 56. Deployment drivers – AC specifications

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

TDEPL

Deployment time

DCR_x(Dep_Current) =

IDEPL_LO ≥1.209A rising to

1.209A falling;

TDEPL =

DCR_x(Deploy_Time)*

TDEP_TIME_RES - TDEL_IDEP

DCR_

x(Depl

oy_Ti

me)*

TDEP

_TIM

E_RE

S - 65

DCR

_x(D

eploy

_Tim

e)*

TDEP

_TIME

_RES -

4TDEP_TIME_RES

DCR_x Deploy_Time

resolution

μs

5TDEP_CC_RES

Deployment current counter

resolution

μs

6TRISE_IDEPL

Rise time

10% - 90% of IDEPL

SSxy = 25 V,

RSQ = 2.2 ohm,

C = 22 nF L = 44 μH

μs

7TDEL_IDEP

Delay time

SPI_CS to 90% IDEPL

μs

8TFALL_IDEPL

Fall time

90% - 10% IDEPL

μs

9TDEL_SD_LS

Low side shutdown delay

time

(with respect to high-side

deactivation)

-50

μs

TFLT_ILIM_LS

Low side overcurrent to low

side deactivation deglitch

time in short to battery

condition

100

120

μs

TFLT_OS_LS

Low side overcurrent to high

side deactivation deglitch

time in case of intermittent

open to squib condition

μs

TOFF_OS_HS

High side OFF time in case

of intermittent open to squib

condition

-4

μs

1024

fosc

-------------

256

fosc

----------

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