L9177ATR datasheet(15/55 Pages) STMICROELECTRONICS

15 / 55 page

Figure 9. High-side driver block diagram

GAPGPS00593

The High side switch is intended as a protected battery and is directly controlled by key input (see Figure 21).

2.5.10

Injector driver

Table 15. Injector driver electrical characteristic

Symbol

Parameter

Condition

Min

Typ

Max

Unit

I max

Output current

2.2

I_oc

Overcurrent threshold

2.8

VDS

Output clamping voltage

I = 2.2 A

Ron

On resistance

I = 2.2 A

0.6

Ilk_off

Leakage current

Vout= 18 V, Key = 0 V

µA

Ilk_on

Pull-Down diagnosis current

V out= 18 V, Key = 5 V

100

µA

ton-off

Turn on-off delay

from CMD edge to 50% output variation

µs

VOL

Open load output voltage

Driver in OFF condition

0.46*VDD

0.5*VDD

0.54*VDD

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. Vdiagth_L < Vout < Vdiagth_H → Open Load; Vout< Vdiagth_L → Short to GND

L9177A

Electrical characteristics

DS12175 - Rev 5

page 15/55

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