L9177 datasheet(23/49 Pages) STMICROELECTRONICS

Part #	L9177

Description	Peripheral on chip for low end engine control

PDF	49 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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23 / 49 page

DocID17617 Rev 1

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L9177

Electrical specifications

Figure 13. Stepper motor operations

3.5.15

O2 sensor heater driver

Table 21. O2 sensor heater driver characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

RdsON

On resistance

Iout = 3 A

0.5

Output clamping voltage

Iout = 3 A

Ilk_off

Leakage current

Vout = 18 V, diagnosis OFF

μA

Ilk_on

Leakage current

Vout = 18 V, diagnosis ON

100

μA

ton_off

Turn on-off delay

From CMD (serial or

parallel) rising edge

μs

VOL

Open load output voltage Driver in OFF condition

0.46*VDD

0.5*VDD

0.54*VDD

IOC

Overcurrent threshold

3.8

Vdiagth_H(1) Diagnostic high threshold Driver in OFF condition

0.54*VDD

0.6*VDD

0.66*VDD

Vdiagth_L(1) Diagnostic low threshold Driver in OFF condition

0.36*VDD

0.4*VDD

0.44*VDD

1. Vdiagth_L<Vout<Vdiagth_H  Open Load; Vout<Vdiagth_L  Short to GND

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