L9969X datasheet(32/70 Pages) STMICROELECTRONICS

32 / 70 page

5 V < VBATT < 18 V, 4.5 V < VDD < 5.5 V, TJ= -40 °C to 150 °C, unless otherwise specified.

Table 19. Time between transients

Symbol

Parameter

Condition

Min

Typ

Max

Unit

ttrans_lim

Time between two transients

130

µs

3.2.6.3

Temperature-Dependent Current Reduction (TDCR)

For TILR < TJ < TSD the current limit level IL decreases from its nominal value (for example typ. 6.6 A for current

level 3) down to 2.5 A ± 1.1 A as shown in Figure 19.

Figure 19. Temperature-Dependent Current Reduction (TDCR)

IOUT

TJ/°C

TILR

TSDmin TSDmax

IL_TSD

5 V < VBATT < 18 V, 4.5 V < VDD < 5.5 V, TJ= -40 °C to 150 °C, unless otherwise specified.

Table 20. TDCR parameters

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Current limit at TSD

1.4

2.5

3.6

TILR

Start of temperature dependent current reduction

150

165

°C

TSD

thermal shut-down

175

190

°C

TSD - TILR

Range of temperature dependent current reduction

°C

3.2.6.4

Behavior on faults in general

These are the kind of faults that L9969 is able to detect:

•

Faults detected in active or in inactive mode: Open Load (OL), Over Temperature (OT), Undervoltage at Vs

(VUF).

•

Faults detected in active mode only: Short to GND at OUT1 (SCGOUT1), Short to GND at OUT2

(SCGOUT2), Short to BAT at OUT1 (SCBOUT1), Short to BAT at OUT2 (SCBOUT2), Short across Load

(SCL).

•

Errors detected in inactive mode: Short to GND at (any) disabled OUTx, Short to BAT at (any) disabled

OUTx.

Consequently, errors detected in active mode can only be detected, if the H-bridge is enabled.

L9969x

Functional description

DS14029 - Rev 6

page 32/70

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