FAN4800AS Datasheet, PDF (8/19 Pages) Fairchild Semiconductor – PFC/PWM Controller Combination

Electrical Characteristics
Unless otherwise noted, VDD=15V, TA= 25°C, TA=TJ, RT=6.8kΩ, and CT=1000pF.
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
VDD Section
VDD-OP Continuously Operating Voltage
IDD ST
Startup Current
VDD=VTH-ON-0.1V; OPFC OPWM
Open
26
V
30
80
µA
IDD-OP
VTH-ON
Operating Current
Turn-on Threshold Voltage
VDD=13V; OPFC OPWM Open
2.0 2.6 5.0 mA
10
11
12
V
ΔVTH
VDD-OVP
Hysteresis
VDD OVP
1.3
1.9
V
27
28
29
V
ΔVDD-OVP VDD OVP Hysteresis
1
V
Oscillator
fOSC-RT/CT
fOSC
fDV
fDT
fTV
fRV
IOSC-DIS
RT/CT Frequency
PFC & PWM Frequency
PWM Frequency
Voltage Stability⁽³⁾
Temperature Stability⁽³⁾
Total Variation (PFC & PWM)⁽³⁾
Ramp Voltage
Discharge Current
RT=6.8kΩ, CT=1000pF
RT=6.8kΩ, CT=1000pF
11V ≦ VDD ≦ 22V
-40°C ~ +105°C
Line, Temperature
Valley to Peak
VRAMP=0V, VRT/CT=2.5V
240 256 268 kHz
60
64
67 kHz
120 128 134
2
%
2
%
58
70 kHz
2.8
V
6.5
15.0 mA
fRANGE Frequency Range
50
75 kHz
tPFC-DEAD PFC Dead Time
RT = 6.8kΩ, CT = 1000pF
400 600 800 ns
VREF
VVREF Reference Voltage
IREF=0mA, CREF=0.1µF
7.4 7.5 7.6
V
ΔVVREF1
Load Regulation of Reference
Voltage
CREF=0.1µF, IREF=0mA to 3.5mA
VVDD=14V, Rise/Fall Time > 20µs
30
50 mV
ΔVVREF2
Line Regulation of Reference
Voltage
CREF=0.1µF, VVDD=11V to 22V
25 mV
ΔVVREF-DT
ΔVVREF-TV
ΔVVREF-LS
Temperature Stability⁽³⁾
Total Variation⁽³⁾
Long-Term Stability⁽³⁾
-40°C ~ +105°C
Line, Load, Temp
TJ=125°C, 0 ~ 1000HRs
0.4 0.5
%
7.35
7.65 V
5
25 mV
IREF-MAX Maximum Current
VVREF > 7.35V
5
mA
PFC OVP Comparator
VPFC-OVP Over-Voltage Protection
2.70 2.75 2.80 V
ΔVPFC-OVP PFC OVP Hysteresis
200 250 300 mV
Low-Power Detect Comparator
VVEAOFF VEA Voltage OFF OPFC
0.2 0.3 0.4
V
VIN OK Comparator
VRD-FBPFC
Voltage Level on FBPFC to
Enable OPWM During Startup
2.3 2.4 2.5
V
ΔVRD-FBPFC Hysteresis
1.15 1.25 1.35 V
Continued on the following page…
© 2010 Fairchild Semiconductor Corporation
FAN4800AS/CS/01S/02S • Rev. 1.0.1
8
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