L6984 datasheet(7/34 Pages) STMICROELECTRONICS

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DocID025378 Rev 3

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L6984

Electrical characteristics

TJ = 25 °C, VIN = VEN = 12 V, VBIAS = 3.3 V unless otherwise specified.

Table 5. Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max. Unit

VIN

Operating input voltage range

4.5

VIN_UVLO UVLO thresholds

rising edge VCC regulator

VBIAS = GND

3.1

3.8

4.5

falling edge VCC regulator

VBIAS = GND

2.9

3.6

4.3

VOUT

Fixed output voltage valley

regulation

FB = VCC, no load

3.23

3.3

3.37

VFB

Adjustable output voltage

valley regulation

No load, VBIAS = 3.3 V

0.88

0.9

0.92

RDSON HS High-side RDSON

ISW = 0.1 A

0.9

1.3

1.7



RDSON LS Low-side RDSON

ISW = 0.1 A

0.6

1.0

1.4

Current limit and zero crossing comparator

IVY

Valley current limit

350

400

470

IZCD

Zero crossing current threshold

(1)

VCC regulator

VCC

VCC voltage

VFB = 1 V, VBIAS = GND

3.8

4.6

VBIAS

VBIAS falling threshold

2.4

2.6

2.8

VBIAS rising threshold

2.6

2.9

3.2

Power consumption

ISHTDWN Shutdown current from VIN

EN = GND

A

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