L9473 datasheet(6/9 Pages) STMICROELECTRONICS

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L9473

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Table 8. REGULATION FEATURES

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VL-PD

L Terminal Regulator Activate

Threshold

VGO=12.6V

0.8

1.15

IL-PD

L Terminal Pull Down Current

VL = VL-ACT

VGO=12.6V

0.09

0.78

VP-IR

Initiate Regulation Phase Voltage

Threshold

Regulator Activated

1.1

1.3

1.5

Phase Terminal Current Sink

VP > 1.5V and < 12.6V

VGO = 12.6V

0.25

3.5

FP-IR

Initiate Regulation Phase

Frequency

123

145

167

FP-TR

Terminate Regulation Phase

Frequency

IRD

Initiate Regulation Delay

Regulator Activated, VP-IR AND

FP-IR Conditions Met First Time.

2.533.5

FSDC

Field Strobe Duty Cycle

Regulator Activated AND

(Regulation Terminated OR

Regulation NOT Initiated)

18.75

LRC

Load Response Control Rate

Field Drive Duty Cycle Increase

8.5

11.5

%/s

FP-LRC

LRC Transition Frequency

LRC Enabled if FP < FP-LRC

255

300

345

Soft-Start

LRC enabled until VSP reached

regardless other conditions

%/s

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