L9911A View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L9911A

CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR

STMicroelectronics 

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L9911

Figure 12. Soft start characteristics (always activated at engine start)

Ign. sw

on

off

Engine speed (rpm)

(soft attack inhibition Alt. speed)

0.5s min

0.5s min Time (sec)

(soft start enable Alt. speed)

Field current (A) Soft start

timing

Soft start

delay time

Soft start

timing

Soft start

delay time

Time (sec)

Soft start

timing

Soft start

delay time

0.15s~0.5s

Time (sec)

W/Lamp

on

off

Starter on

Ign. sw on

E/G stop

and Ign. sw off

Starter on

Ign. sw on

0.15s~0.5s

E/G stop

Starter on Time (sec)

Engine start

Soft attack inhibition

Alt. speed > E/G speed

Engine start Engine restart

Soft attack inhibition

Alt. speed < E/G speed

10/15

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