L9346PD datasheet(7/13 Pages) STMICROELECTRONICS

7 / 13 page

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Condition

Value Tj1

Value Tj2

Unit

Min.

Typ.

Max.

Min.

Max.

Inputs IN1-4, EN

VIN,EN L

Logic Input/Enable Low

Voltage

-0.3

0.8

VIN,EN H

Logic Input/Enable High

Voltage

IN, EN

2.0

VEN,IN hys

Logic Input Hysteresis

0.2

0.4

0.8

IIN

Input Sink Current

VIN = 2 to 12V

240

µA

IEN

Enable Sink Current

240

µA

Timing

tDON

Output Delay ON Time

6) Fig. 7

µs

tD OFF

Output Delay OFF Time

6) Fig. 7

µs

tDH-L, Diag

Diag. Delay Output

OFF Time

6) Fig. 6

µs

tD IOU

Diagnostic Open Load

Delay Time

VS = 9 to 16V, Fig 8

≤ IOUC

850

µs

tDOL

Diagnostic Overload

Delay Switch-OFF Time

VS = 9 to 16V, Fig 8

IO >IOOC

160

300

µs

tDEN ON

Enable ON Time

6) Fig. 7

µs

tD EN OFF

Enable OFF Time

6) Fig. 7

µs

NOTE:

5) Open pins (EN, IN) are detected as low

6) VS = 9 to 16V ∧ IOUC ≤ IO ≤ IOOC

DIAGNOSTIC TABLE

CONDITIONS

OUT

DIAG.

Normal Function

off

GND short

VOtyp < 0.55VS

off

Load bypass

∆VO1-4/2-3 ≥ 1.25V

off

Open Load

IO1,2,3,4typ < 320mA

Tjtyp

≥ 190°C Overtemperature 8)

off

Over Load

IOmin 1,3 >5A

IOmin 2,4 >3A

off

Reset and Overtemperature Latch

DC don’t care

NOTE:

7) For VS = 4.5 to 6.5V, IO ≤ 2A, the diag. table is valid

8) If one diag. status shows the overtemperature, recognition, in parallel this output will be switched OFF internally.

The corresponding channel should be switched OFF additionally by its input signal, otherwise the overload latch will be set aftertDOL is passed.

This behaviour is related to the overdrop sensing which is used as over load recognition.

The overtemperature is latched (DIAG = L) until the level of the IN signal changes to low.

L9346

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