L9679P datasheet(256/279 Pages) STMICROELECTRONICS

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Electrical characteristics

L9679P

256/279

DS11627 Rev 7

18.18

Remote sensor interface

All electrical characteristics are valid for the following conditions unless otherwise noted:

40 °C  Ta  +95 °C, VINGOOD0  VIN  35 V, VSATBUCK(min)  VSATBUCK,

VSYNCBOOST(min)  VSYNCBOOST

18.18.1 PSI-5 interface

Table 62. PSI-5 satellite transceiver - DC specifications

Symbol

Parameter

Conditions

Min

Typ

Max Unit

IRSU

Interface quiescent current -

-35

-4

VRSU_MAX

Max. output voltage

excluding sync. pulse

(internal regulation,

VSATBUCK = VSYNCBOOST)

3 VRSU_SYNC_MAX

Max. output voltage

including sync. pulse

(internal regulation,

VSYNCBOOST = VIN)

Syncboost = 12 V, 14.75 V,

18 V and 35 V

16.5

RRSU

RSU output resistance

From IRSU = -4 mA to -65 mA

9.5



ISTB_TH

Static reverse current into

SATBUCK or

SYNCBOOST pin

(VSUPPLY)

VRSUx > VSUPPLY + VRSU_STB

0.0

VRSU_STB

Output short to battery

threshold

10.0

100

IOCTH_PSI5

Over current detection

threshold

Interface disabled after

TFLT_OCTH_PSI5

-130

-66

ILIM_PSI5

Output current limit

IRSUx

-130

-80



ILIM_OC_PSI5

Difference between current

limitation and OC threshold

ABS(ILIM_RSU) -

ABS(IOCTH_RSU)

IBO

Base current

Default value

-15%

-15

+15% mA

ITHGND

Leakage to ground fault

current detection

To ground; detected by IB

-50.4

-42

-35

12a

ITHOPEN

Output open load detection

threshold

VRSUx = open or leakage to

battery

-25 °C ≤ Tj ≤ +150 °C

guaranteed by

design/characterization

-3.5

-0.5

12b

-40 °C ≤ Tj ≤ +150 °C

-3.9

-0.2

IOL

Output open load detection

threshold

VRSUx = open

ILKGB

(min)

ILKGB

(max)

DACRES

DAC resolution

Bit

ILSB

LSB current

Design Info

93.75

µA

L9679P Datasheet(PDF) 256 Page - STMicroelectronics

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