L9779WD datasheet(84/170 Pages) STMICROELECTRONICS

Numer części	L9779WD

Szczegółowy opis	Multifunction IC for engine management system

PDF	170 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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84 / 170 page

Functional description

L9779WD

84/170

DocID027452 Rev 5

Figure 54. Short to GND detection during “on” phase

Table 34. Stepper configuration electrical characteristics

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

OUT

21 to 28

VOutnorm

OUT(21,22),

OUT(23,24),

OUT(25,27),

OUT(26,28) output

voltage

OUT(21,22) short to

OUT(23,24);

OUT(25,27) short to

OUT(26,28);

2.3

2.7

HVTH

Diagnostic high

threshold

Driver in OFF condition

VOutnorm

+120mV

-3

LVTH

Diagnostic low

threshold

Driver in OFF condition

1.9

VOutnorm

-200mV

IOVC

Over current

threshold

-1

2.1

I_OPEN_LOAD

Output open load

threshold current

-10

IOUT_PD_A+B

or C+D

Output diagnostic

pull down current

OFF STATE

Vpin = 5 V

200

350

µA

IOUT_PU_A+B

or C+D

Output diagnostic

pull up current OFF

STATE

Vpin = 0 V

150

µA

Ropenl

Open load resistor

threshold

Application note

150

kΩ

Tdgc_ON

Deglitch filter time in

ON condition

Test by scan

-25%

+25%

µs

Tdgc_OFF

Test by scan

-25%

125

+25%

µs

Tdgc_ol_on

Test by scan

-25%

+25%

µs

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