L9484 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L9484

CAR ALTERNATOR VOLTAGE REGULATOR

STMicroelectronics 

1 2 3 4 5 6 7 8

L9484

Table 8.

Symbol

Regulation features (continued)

Parameter

Conditions

Min. Typ. Max. Unit

VP-F

Phase input voltage low fault

threshold

IP

Phase terminal current sink

FP-IR

FP-TR

Initiate regulation phase

frequency

Terminate regulation phase

frequency

IRD Initiate regulation delay

FSDC Field strobe duty cycle

LRC Load response control rate

FP-LRC LRC transition frequency

SS Soft-start

VP > 1.5V and < 12.6V

VGO = 12.6V

7.0

8

9.0

V

0.3

3.5 mA

123 145 167 Hz

59

72

86

Hz

Regulator activated, VP-IR AND

FP-IR conditions met first time.

1.7

2

2.3

s

Regulator activated and

(regulation terminated or

regulation not initiated)

16 18.75 22

%

Field drive duty cycle increase

34

40

46 %/s

LRC enabled if FP < FP-LRC

255 300 345 Hz

LRC enabled until VSP reached

regardless other conditions

34

40

46 %/s

8/11

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