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ML4801 Datenblatt(PDF) 4 Page - Fairchild Semiconductor

Teilenummer ML4801
Bauteilbeschribung  Variable Feedforward PFC/PWM Controller Combo
Download  14 Pages
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Hersteller  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

ML4801 Datenblatt(HTML) 4 Page - Fairchild Semiconductor

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ML4801
4
REV. 1.1 3/9/2001
ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OVP COMPARATOR
Threshold Voltage
2.65
2.75
2.85
V
Hysteresis
175
250
325
mV
PFC ILIMIT COMPARATOR
Threshold Voltage
-0.9
-1.0
-1.1
V
∆PFC ILIMIT Threshold - Gain Modulator Output
120
220
mV
Delay to Output
150
300
ns
DC ILIMIT COMPARATOR
Threshold Voltage
1.4
1.5
1.6
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
0.65
0.85
1.05
IAC = 50µA, VRMS = 1V, VFB = 0V
1.90
2.20
2.40
IAC = 50µA, VRMS = 1.8V, VFB = 0V
0.90
1.05
1.25
IAC = 100µA, VRMS = 3.3V, VFB = 0V
0.20
0.30
0.40
Bandwidth
IAC = 100
µA
10
MHz
Output Voltage
IAC = 350µA, VRMS = 1V,
0.65
0.75
0.85
V
VFB = 0V
OSCILLATOR
Initial Accuracy
TA = 25ºC
188
200
212
kHz
Voltage Stability
11V < VCC < 16.5V
1
%
Temperature Stability
2%
Total Variation
Over Line and Temp
182
218
kHz
Ramp Valley to Peak Voltage
2.5
V
PFC Dead Time
350
470
600
ns
CT Discharge Current
VRAMP 2 = 0V, VRAMP 1 = 2.5V
3.5
5.5
7.5
mA


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