NCL30082ADMR2G(2013) 查看數據表（PDF） - ON Semiconductor

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NCL30082ADMR2G
(Rev.:2013)

Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with Thermal Fold-back

ON Semiconductor 

NCL30082

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

Test Condition

Symbol

Min Typ

Max Unit

ZERO VOLTAGE DETECTION CIRCUIT

ZCD threshold voltage

ZCD threshold voltage (Note 4)

ZCD hysteresis (Note 4)

Threshold voltage for output short circuit or aux. winding

short circuit detection

VZCD increasing

VZCD decreasing

VZCD increasing

VZCD(THI)

25

45

65 mV

VZCD(THD)

5

25

45 mV

VZCD(HYS)

10

–

–

mV

VZCD(short)

0.8

1

1.2

V

Short circuit detection Timer

Auto−recovery timer duration

Input clamp voltage

High state

Low state

Propagation Delay from valley detection to DRV high

Equivalent time constant for ZCD input (Note 4)

Blanking delay after on−time

Timeout after last demag transition

CONSTANT CURRENT CONTROL

VZCD < VZCD(short)

Ipin1 = 3.0 mA

Ipin1 = −2.0 mA

VZCD decreasing

tOVLD

trecovery

VCH

VCL

tDEM

tPAR

tBLANK

tTIMO

70

90 110 ms

3

4

5

s

V

–

9.5

–

−0.9 −0.6 −0.3

–

–

150 ns

–

20

–

ns

2.25

3

3.75 ms

5

6.5

8

ms

Reference Voltage at Tj = 25°C

Reference Voltage Tj = −40°C to 125°C

50% reference voltage (for thermal foldback)

Current sense lower threshold for detection of the

leakage inductance reset time

VREF

VREF

VREF50

VCS(low)

245 250 255 mV

242.5 250 257.5 mV

–

125

–

mV

30

55

80 mV

LINE FEED−FORWARD

VVIN to ICS(offset) conversion ratio

Offset current maximum value

VREF value below which the offset current source is turned off

VREF value above which the offset current source is turned on

VALLEY SELECTION

VpinVIN = 4.5 V

VREF decreases

VREF increases

KLFF

Ioffset(MAX)

VREF(off)

VREF(on)

15

17

19 mA/V

67.5 76.5 85.5 mA

–

37.5

–

mV

–

50

–

mV

Threshold for line range detection Vin increasing

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

Threshold for line range detection Vin decreasing

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

Blanking time for line range detection

Valley thresholds

1st to 2nd valley transition at LL and 2nd to 3rd valley HL

2nd to 1st valley transition at LL and 3rd to 2nd valley HL

2nd to 4th valley transition at LL and 3rd to 5th valley HL

4th to 2nd valley transition at LL and 5th to 3rd valley HL

4th to 7th valley transition at LL and 5th to 8th valley HL

7th to 4th valley transition at LL and 8th to 5th valley HL

7th to 11th valley transition at LL and 8th to 12th valley HL

11th to 7th valley transition at LL and 12th to 8th valley HL

11th to 13th valley transition at LL and 12th to 15th valley HL

13th to 11th valley transition at LL and 15th to 12th valley HL

4. Guaranteed by design

5. OTP triggers when RNTC = 4.7 kW

VVIN increases

VHL

2.28 2.4 2.52 V

VVIN decreases

VLL

2.18 2.3 2.42 V

VREF decreases

VREF increases

VREF decreases

VREF increases

VREF decreases

VREF increases

VREF decreases

VREF increases

VREF decreases

VREF increases

tHL(blank)

15

25

35 ms

mV

VVLY1−2/2−3

VVLY2−1/3−2

VVLY2−4/3−5

VVLY4−2/5−3

VVLY4−7/5−8

VVLY7−4/8−5

VVLY7−11/8−12

VVLY11−7/12−8

VVLY11−13/12−15

VVLY13−11/15−12

177.5

185.0

117.5

125.0

–

–

–

–

–

–

187.5

195.0

125.0

132.5

75.0

82.5

37.5

50.0

15.0

20.0

197.5

205.0

132.5

140.0

–

–

–

–

–

–

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