NCL30082B datasheet(6/35 Pages) ONSEMI

Part #	NCL30082B

Description	Dimmable Quasi-Resonant Primary Side Current-Mode Primary Side Current-Mode

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Manufacturer	ONSEMI [ON Semiconductor]

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NCL30082

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6

Table 3. ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values TJ = 25°C, VCC = 12 V;

For min/max values TJ = −40°C to +125°C, Max TJ = 150°C, VCC = 12 V)

Description

Unit

Max

Typ

Min

Symbol

Test Condition

ZERO VOLTAGE DETECTION CIRCUIT

ZCD threshold voltage

VZCD increasing

VZCD(THI)

25

45

65

mV

ZCD threshold voltage (Note 6)

VZCD decreasing

VZCD(THD)

5

25

45

mV

ZCD hysteresis (Note 6)

VZCD increasing

VZCD(HYS)

10

–

mV

Threshold voltage for output short circuit or aux. winding

short circuit detection

VZCD(short)

0.8

1

1.2

V

Short circuit detection Timer

VZCD < VZCD(short)

tOVLD

70

90

110

ms

Auto−recovery timer duration

trecovery

3

4

5

s

Input clamp voltage

High state

Low state

Ipin1 = 3.0 mA

Ipin1 = −2.0 mA

VCH

VCL

–

−0.9

9.5

−0.6

–

−0.3

V

Propagation Delay from valley detection to DRV high

VZCD decreasing

tDEM

–

150

ns

Equivalent time constant for ZCD input (Note 6)

tPAR

–

20

–

ns

Blanking delay after on−time

tBLANK

2.25

3

3.75

ms

Blanking delay after on−time NCL30082B2 and

NCL30082B3

tBLANKB2

1.2

1.6

2.0

ms

Timeout after last demag transition

tTIMO

5

6.5

8

ms

CONSTANT CURRENT CONTROL

Reference Voltage at TJ = 25°C

VREF

245

250

255

mV

Reference Voltage TJ = −40°C to 125°C

VREF

242.5

250

257.5

mV

Reference Voltage NCL30082D (TJ = 25°C)

VREFD

495

500

505

mV

Reference Voltage NCL30082D (TJ = 0°C to 85°C)

VREFD

492

500

508

mV

Reference Voltage NCL30082D (TJ = −40°C to 125°C)

VREFD

488

500

512

mV

Reference Voltage NCL30082B3 (TJ = 25°C)

VREFB3

329

333

337

mV

Reference Voltage NCL30082B3 (TJ = 0°C to 85°C)

VREFB3

325

333

341

mV

Reference Voltage NCL30082B3 (TJ = −40°C to 125°C)

VREFB3

321

333

345

mV

50% reference voltage (for thermal foldback)

VREF50

–

125

–

mV

25% reference voltage (for thermal foldback) NCL30082D

VREF25D

−

125

−

mV

Current sense lower threshold for detection of the

leakage inductance reset time

VCS(low)

30

55

80

mV

LINE FEED−FORWARD

VVIN to ICS(offset) conversion ratio

KLFF

15

17

19

mA/V

Offset current maximum value

VpinVIN = 4.5 V

Ioffset(MAX)

67.5

76.5

85.5

mA

VREF value below which the offset current source is turned off

VREF decreases

VREF(off)

–

37.5

–

mV

VREF value above which the offset current source is turned on

VREF increases

VREF(on)

–

50

–

mV

VALLEY SELECTION

Threshold for line range detection Vin increasing

(1st to 2nd valley transition for VREF > 0.75 V)

VVIN increases

VHL

2.28

2.4

2.52

V

Threshold for line range detection Vin decreasing

(2nd to 1st valley transition for VREF > 0.75 V)

VVIN decreases

VLL

2.18

2.3

2.42

V

Blanking time for line range detection

tHL(blank)

15

25

35

ms

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

6. Guaranteed by design.

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