L9658 datasheet(14/64 Pages) STMICROELECTRONICS

14 / 64 page

Electrical specification

L9658

14/64

Doc ID 14219 Rev 3

3.3.2

AC characteristics

VRES = 6.5 to 35 V, VDD = 4.9 to 5.1 V, V8BUCK = 7.0 V to 8.5 V, Tamb = -40 °C to +95 °C

Table 9.

AC specification: deployment drivers

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

tPOR

POR de-glitch timer

Timer for VRST

s

TGLITCH

De-glitch timer

s

ION

Diagnostic current

DEPEN pins asserted; Measured at

150

s from falling edge CS_D or

CS_A; See Figure 4

0.90

IFINAL

tPULSE

Pulse stretch timer

See Table 17

tP_ACC

Pulse stretch timer accuracy -

-20

tDEPLOY-2ms Deployment time

VRES = 6.9 to 35 V

(1)

2.5

tDEPLOY-1ms Deployment time

VRES = 12 to 40 V

(1)

1.15

tFLT_DLY

Fault detection filter(2)

-10

s

ISLEW

Rmeas current di/dt

10 % - 90 % of ISRC

2-8

tR_DLY

Rmeas current delay

From the falling edge of CS to 10 %

of ISRC

s

tR_WAIT

Rmeas wait time(2)

Wait time before AOUT voltage is

stable for ADC reading

100

s

tTIMEOUT

MOS diagnostic on-time

2.5

tILIM

SQL high current protection

timer

110

s

tPROP_DLY

LS/HS MOS turn off

propagation delay(2)

Time is measured from the valid

LS/HS MOS fault to the LS/HS turn

off

s

Application Information; Test is not performed at high voltage.

Design Information Only

s

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