L9407F datasheet(5/11 Pages) STMICROELECTRONICS

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L9407F

Figure 1. DF Monitor Electrical configuration

Soft start enable frequency

range

Tcase = 25ºC

Tcase = -40 to150ºC

144

136

160

176

184

f_RESS_SS

Reset frequency range to

enable soft start

DISAB

Soft start enable frequency

range

Tcase = 25ºC

Tcase = -40 to150ºC

367

347

408

449

469

f-dfm

Output open drain switching

freq.

preexc. mode; Isink=14mA

400

VL-DF-

MON

Output low voltage saturation

I-sink=14mA

1.5

I-DF-MON

Short circuit current protection

V-DF-MON=24V field fully on

120

Ilk-DF-

MON

Output leakage current

V-DF-MON=24V field off

0.1

t-TM

Output voltage rise time

R=2.7K Ohm; C=1nF;

Valim=13.5V (Fig. 6)

0.05

t-TD

Output voltage fall time

R=2.7K Ohm; C=1nF;

Valim=13.5V (Fig. 6)

0.05

t-D

Diagnostic Alarm Delay Time

0.15

0.5

ELECTRICAL CHARACTERISTCS (continued)

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

Symbol

Parameter

Test Condition

Min.

Typ.

Max

Unit

L9407F

Control

Circuit

Field driver

DFMon driver

to the ECU

Valim

Test circuit

Field

Alternator

Regulator assy

A+

DF_MON

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