L9177ATR datasheet(20/55 Pages) STMICROELECTRONICS

20 / 55 page

Figure 13. Stepper motor operations

PWM

DIR

VoutA

VoutB

VoutC

VoutD

GADG2408171141PS

2.5.15

O2 sensor heater driver

Table 20. O2 sensor heater driver characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

R dsON

On resistance

Iout= 3 A

0.5

Output clamping voltage

Iout= 3 A

Ilk_off

Leakage current

Vout= 18 V,Key = 0 V

µA

Ilk_on

Pull-Down diagnosis current

Vout= 18 V, Key = 5 V

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

V diagth_L (1) Diagnostic low threshold

Driver in OFF condition

0.36*VDD

0.4*VDD

0.44*VDD

Tmask

OFF diagnostic masking time

Guaranteed by scan

0.75

1.25

Tdcg_noise OFF diagnostic Deglitch filter time

Guaranteed by scan

2.16

3.6

5.04

µs

Tdcg

ON diagnostic Deglitch filter time

Guaranteed by scan

µs

1. V diagth_L < V out<V diagth_H→ Open Load; V out < V diagth_L→ Short to GND

L9177A

Electrical characteristics

DS12175 - Rev 5

page 20/55

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