L9638 datasheet(5/14 Pages) STMICROELECTRONICS

5 / 14 page

5/14

L9638

Note:

1. Room temperature evaluated - no 100% tested

6.3

tWUPgs

Remote wake-up delay time

Transitioning on WUP

100

µs

Enable Input EN

7.1

VENLow

Low level input voltage

1.5

7.2

VENHigh

High level input voltage

3.5

7.3

REN

EN pull down resistor

Ω

7.4

tgts

Go to sleep delay time

VEN = VENlow

100

µs

7.5

tENgs

EN wake-up glitch

suppression time

VEN = VENhigh

100

µs

AC Timing Parameters

8.1

Duty Cycle 1

THRec(max) = 0.744 x VSUP;

THDom(max) = 0.581 x VSUP;

Vsup = 7.0 to 18V; tbit = 50

µs;

D1 = tBus_rec(min)/2 x tBit

(CBUS; RBUS) 1nF; 1k

Ω/6.8nF;

660

Ω/10nF; 500Ω

0.396

8.2

Duty Cycle 2

THRec(min) = 0.284 x VSUP;

THDom(min) = 0.422 x VSUP;

Vsup = 7.6 to 18V; tbit = 50

µs;

D2 = tBus_rec(min)/2 x tBit

(CBUS; RBUS) 1nF; 1k

Ω/6.8nF;

660

Ω/10nF; 500Ω

0.581

8.3

Duty Cycle 3

THRec(max) = 0.778 x VSUP;

THDom(max) = 0.616 x VSUP;

Vsup = 7.0 to 18V; tbit = 96

µs;

D3 = tBus_rec(min)/2 x tBit

(CBUS; RBUS) 1nF; 1k

Ω/6.8nF;

660

Ω/10nF; 500Ω

0.417

8.4

Duty Cycle 4

THRec(min) = 0.251 x VSUP;

THDom(min) = 0.389 x VSUP;

Vsup = 7.6 to 18V; tbit = 96

µs;

D4 = tBus_rec(min)/2 x tBit

(CBUS; RBUS) 1nF; 1k

Ω/6.8nF;

660

Ω/10nF; 500Ω

0.591

Fault Conditions

9.1

ILIN_NO_GND

LIN current with GND

disconnected

GND = Vs = 12V

0V< VLIM < 18V

(1)

-1

9.2

ILIN_NO_Vs

LIN current with VS

grounded

V = GND, 0V < VLIN < 18V

(1)

100

µA

Table 5. Electrical Characteristics (continued)

(VS = 6V to 26V; TJ = -40 to 150 °C unless otherwise specified)

Item

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

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