ML4824CP1 datasheet(4/16 Pages) FAIRCHILD

Il numero della parte	ML4824CP1

Spiegazioni elettronici	Power Factor Correction and PWM Controller Combo

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Produttore elettronici	FAIRCHILD [Fairchild Semiconductor]

Homepage	http://www.fairchildsemi.com

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4 / 16 page

ML4824

4

REV. 1.01 12/7/2000

ELECTRICAL CHARACTERISTICS (Continued)

SMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

OVP COMPARATOR

Threshold Voltage

2.6

2.7

2.8

V

Hysteresis

80

115

150

mV

PFC ILIMIT COMPARATOR

Threshold Voltage

–0.8

–1.0

–1.15

V

∆(PFC ILIMIT VTH - Gain Modulator Output)

100

190

mV

Delay to Output

150

300

ns

DC ILIMIT COMPARATOR

Threshold Voltage

0.97

1.02

1.07

V

Input Bias Current

±0.3

±1

µA

Delay to Output

150

300

ns

VIN OK COMPARATOR

Threshold Voltage

2.4

2.5

2.6

V

Hysteresis

0.8

1.0

1.2

V

GAIN MODULATOR

Gain (Note 3)

IAC = 100µA, VRMS = VFB = 0V

0.36

0.55

0.66

IAC = 50µA, VRMS = 1.2V, VFB = 0V

1.20

1.80

2.24

IAC = 50µA, VRMS = 1.8V, VFB = 0V

0.55

0.80

1.01

IAC = 100µA, VRMS = 3.3V, VFB = 0V

0.14

0.20

0.26

Bandwidth

IAC = 100µA

10

MHz

Output Voltage

IAC = 250µA, VRMS = 1.15V,

0.74

0.82

0.90

V

VFB = 0V

OSCILLATOR

Initial Accuracy

TA = 25°C

71

76

81

kHz

Voltage Stability

VCCZ - 3V < VCC < VCCZ - 0.5V

1

%

Temperature Stability

2%

Total Variation

Line, Temp

68

84

kHz

Ramp Valley to Peak Voltage

2.5

V

Dead Time

PFC Only

270

370

470

ns

CT Discharge Current

VRAMP 2 = 0V, VRAMP 1 = 2.5V

4.5

7.5

9.5

mA

REFERENCE

Output Voltage

TA = 25°C, I(VREF) = 1mA

7.4

7.5

7.6

V

Line Regulation

VCCZ - 3V < VCC < VCCZ - 0.5V

2

10

mV

Load Regulation

1mA < I(VREF) < 20mA

2

15

mV

Temperature Stability

0.4

%

Total Variation

Line, Load, Temp

7.35

7.65

V

Long Term Stability

TJ = 125°C, 1000 Hours

5

25

mV

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