LED6000 datasheet(8/49 Pages) STMICROELECTRONICS

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Electrical characteristics

LED6000

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DocID027777 Rev 2

Electrical characteristics

All the population tested at TJ = 25 °C, VIN = VCC = 24 V, VBIAS = GND, VDIM = VEN = 3 V

and RILIM = N. M. unless otherwise specified.

Table 5. Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max. Unit

VIN

Operating input voltage

range

(1)

4.5

RDSON HS High-side RDSON

ILX = 0.5 A

0.25

0.32



ILX = 0.5 A

(1)

0.25

0.42



fSW

Switching frequency

FSW pin floating;

233

250

267

kHz

FSW pin floating

(1)

225

250

275

kHz

Selected switching

frequency

RFSW = 10 k

1350

1500

1650 kHz

IPK

Peak current limit

ILIM pin floating; VFB = 0.2 V

(2)

3.5

4.1

4.7

Selected peak current limit

RILIM = 100 k; VFB = 0.2 V

(2)

0.68

0.85

1.01

ISKIP

Pulse skipping peak current

ILIM pin floating

(2)

0.40

RILIM = 100 k

(2)

0.15

TONMIN Minimum on-time

120

150

TONMAX Maximum on-time

Refer to Section 4: Functional

description for TONMAX details.

s

TOFFMIN Minimum off-time

(3)

360

VCC / VBIAS

VCCH

VCC UVLO rising threshold

(1)

3.85

4.10

4.30

VCCHYST VCC UVLO hysteresis

(1)

160

250

340

SWO

VBIAS threshold

Switch internal supply from VCC to

VBIAS. VBIAS ramping up from 0 V.

(1)

2.82

2.90

2.98

Hysteresis

(3)

VCC -VBIAS threshold

Switch internal supply from VCC to

VBIAS. VIN = VCC = 24 V, VBIAS falling

from 24 V to GND.

(1)

3.35

4.05

4.90

Hysteresis

(3)

750

Power consumption

ISHTDWN Shutdown current from VIN VEN = GND

A

IQUIESC

Quiescent current from VIN

and VCC

LX floating, VFB = 1 V,

VBIAS = GND, FSW floating.

2.4

3.4

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