L9800 datasheet(33/55 Pages) STMICROELECTRONICS

33 / 55 page

Symbol

Description

Test condition

Min.

Typ.

Max.

Unit

tON

Turn on time (from INn pin or bit to VOUT

= 10% VBATT)

RL = 50 Ω, VBATT = 14 V,

Active or limp-home mode

µs

tOFF

Turn off time (from INn pin or bit to VOUT

= 90% VBATT)

RL = 50 Ω, VBATT = 14 V,

Active or limp-home mode

µs

dV/dtON

Turn on slew rate VDS = 70% to 30%

VBATT

RL = 50 Ω, VBATT = 14 V,

Active or limp-home mode

0.35

2.2

V/µs

dV/dtOFF

Turn off slew rate VDS = 30% to 70%

VBATT

RL = 50 Ω, VBATT = 14 V,

Active or limp-home mode

0.15

1.3

3.4

V/µs

dV/dtOFF

Turn off slew rate VDS = 30% to 70%

VBATT gate kill condition

RL = 50 Ω, VBATT = 14 V,

Active or limp-home mode

V/µs

tINRUSH

Bulb inrush mode restart time

Active mode covered by SCAN

µs

tBIM

Bulb inrush mode reset time

Active mode covered by SCAN

PWM generator

fINT

Internal reference frequency

MHz

fINT(VAR)

Internal reference frequency variation

-15

fINT(VAR_3V)

Internal reference frequency variation

when VBATT=VDDIO=3V

-15

Note:

All the digital filtering times reported in Table 14 are to be considered without spread spectrum.

L9800

Power stages

DS14041 - Rev 2

page 33/55

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