L9680 datasheet(260/286 Pages) STMICROELECTRONICS

Part #	L9680

Description	Automotive advanced airbag for mid/high end applications and cut-off battery IC

PDF	286 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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260 / 286 page

Electrical characteristics

L9680

260/286

DS11615 Rev 7

SRISRC

Squib/pyroswitchresistance

measurement

current source slew-rate

7.5

mA/µs

VSRx_RM

SRx voltage during

resistance measurement

LPDIAGREQ(ISRC)=”01” or

“10”

LPDIAGREQ(ISINK)=1

0.4

0.7

1.2

ISINK_HI_SR SRx current sink limit high

LPDIAGREQ(ISRC_CURR_

SEL) = 0

LPDIAGREQ(ISINK) = 1

100

ISINK_LO_SR SRx current sink limit low

LPDIAGREQ(ISRC_CURR_

SEL) = 1

LPDIAGREQ(ISINK) = 1

17.5

IPD_SR_L

SRx current pull down

SYS_CTL(PD&VRCM_SEL) = 0

0.7

1.3

IPD_SR_H

SYS_CTL(PD&VRCM_SEL) = 1

4.5

7.5

RLKG_SF

SFx leakage resistance

Design info

kΩ

VLKG_SF

SFx leakage voltage source Design info

-1

RSQ_ACC

Squib/pyroswitchresistance

measurement accuracy

After software calculation

All errors included

RSQ between 1.0 Ω and 10.0 Ω

With High Current Source

(40 mA)

-8%

EMI input low-pass filter

Design Info

100

kHz

Table 58. Deployment drivers diagnostics - Squib/pyroswitch resistance measurement

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

L9680 Datasheet(PDF) 260 Page - STMicroelectronics

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