L9407F datasheet(4/11 Pages) STMICROELECTRONICS

4 / 11 page

L9407F

4/11

t_ST

Soft Start Delay Time (see fig.

activated always at engine start

t_SL

Soft Attack Time / Soft Start

Time (see fig. 5)

from 0 to 100% field duty cycle

2.45

3.45

Soft Attack Blind Zone

percentage of maximum duty

cycle immediate variation at soft

attack

010

t-rise

Output Voltage Rise Time

Ifield = 3A resistive (Fig. 6)

µs

t_fall

Output Voltage Fall Time

Ifield = 3A resistive (Fig. 6)

µs

If_leak

Output Field Driver Leakage

Current

DF = 24V

VH_SAT

High Side Driver Saturation

Voltage (Fig. 9)

I source = 1A

1.2

VL_SAT1

Low Side Driver Saturation

Voltage

I sink = 0.5A

VL_SAT2

Low Side Driver Saturation

Voltage

I sink = 0.3A

1.5

VLSB

Selfbias without supply Lamp

driver Voltage

IHSC

High Side Driver short circuit

current (Fig. 9)

A+ = 17.5V; D+ = GND

1.2

ILSC

Low Side Driver short circuit

current

A+ = D+ = 17.5V

0.7

2.5

VthD+

Enable Regulator Voltage D+

0.5

0.7

0.9

IthD+

Enable Regulator pull-down

Current D+

0.4

3.5

L-t-D

Lamp on delay at Ign. switch

turn on

(Fig. 7)

Vcan

Test mode to cancel soft start/

attack (voltage)

(Fig. 8)

VPHL1

Enable control voltage input

high threshold

square wave f = 1KHz

0.67

0.795

0.92

t_PH

PH Filtering Time

200

µs

VPHH1

Diagnosis phase loss input

high threshold

10.25

11.5

VPHH2

Diagnosis phase loss input low

threshold

guaranteed by design

tPHd

Diagnostic PH Filtering Time

guaranteed by design

200

µs

I_Th-PH

Phase Pull-down Current

ELECTRICAL CHARACTERISTCS (continued)

(Tcase = -40ºC ÷ 150ºC; unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max

Unit

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