L9679P datasheet(251/272 Pages) STMICROELECTRONICS

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L9679P

Electrical characteristics

271

17.18

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

17.18.1

PSI-5 interface

Table 61. PSI-5 satellite transceiver - DC specifications

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IRSU

Interface quiescent current -

-35

-4

2VRSU_MAX

Max. output voltage

excluding sync. pulse

(internal regulation,

VSATBUCK = VSYNCBOOST)

3VRSU_SYNC_MAX

Max. output voltage

including sync. pulse

(internal regulation,

VSYNCBOOST = VIN)

16.5

4RRSU

RSU output resistance

From IRSU = -4 mA to -65 mA

9.5



5ISTB_TH

Static reverse current into

SATBUCK or

SYNCBOOST pin

(VSUPPLY)

VRSUx > VSUPPLY + VRSU_STB

0.0

6VRSU_STB

Output short to battery

threshold

10.0

100

7IOCTH_PSI5

Over current detection

threshold

Interface disabled after

TFLT_OCTH_PSI5

-130

-66

8ILIM_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%

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

Vt2

Sync pulse amplitude

IRSU = 4 - 35 mA

Referred to VRSUx voltage

before sync pulse

3.8

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