Datasheet

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN4800AS/CS/01S/02S • Rev. 1.0.2 8
FAN4800AS/CS/01S/02S — PFC/PWM Controller Combination
Electrical Characteristics
Unless otherwise noted, V
DD
=15 V, T
A
= 25°C, T
A
=T
J
, R
T
=6.8 kΩ, and C
T
=1000 pF.
Symbol Parameter Conditions Min. Typ. Max. Unit
V
DD
Section
V
DD-OP
Continuously Operating Voltage 26 V
I
DD ST
Startup Current
V
DD
=V
TH-ON
-0.1 V; OPFC OPWM
Open
30 80 µA
I
DD-OP
Operating Current V
DD
=13 V; OPFC OPWM Open 2.0 2.6 5.0 mA
V
TH-ON
Turn-on Threshold Voltage 10 11 12 V
ΔV
TH
Hysteresis 1.3 1.9 V
V
DD-OVP
V
DD
OVP 27 28 29 V
ΔV
DD-OVP
V
DD
OVP Hysteresis 1 V
Oscillator
f
OSC-RT/CT
RT/CT Frequency R
T
=6.8 kΩ, C
T
=1000 pF 240 256 268 kHz
f
OSC
PFC & PWM Frequency R
T
=6.8 kΩ, C
T
=1000 pF 60 64 67 kHz
PWM Frequency 120 128 134
f
DV
Voltage Stability
(3)
11 V ≦ V
DD
≦ 22 V
2 %
f
DT
Temperature Stability
(3)
-40°C ~ +105°C 2 %
f
TV
Total Variation (PFC & PWM)
(3)
Line, Temperature 58 70 kHz
f
RV
Ramp Voltage Valley to Peak 2.8 V
I
OSC-DIS
Discharge Current V
RAMP
=0V, V
RT/CT
=2.5 V 6.5 15.0 mA
f
RANGE
Frequency Range 50 75 kHz
t
PFC-DEAD
PFC Dead Time R
T
=6.8 kΩ, C
T
=1000 pF 400 600 800 ns
V
REF
V
VREF
Reference Voltage I
REF
=0 mA, C
REF
=0.1 µF 7.4 7.5 7.6 V
ΔV
VREF1
Load Regulation of Reference
Voltage
C
REF
=0.1 µF, I
REF
=0 mA to
3.5 mA V
VDD
=14 V, Rise/Fall Time
> 20 µs
30 50 mV
ΔV
VREF2
Line Regulation of Reference
Voltage
C
REF
=0.1 µF, V
VDD
=11 V to 22 V 25 mV
ΔV
VREF-DT
Temperature Stability
(3)
-40°C ~ +105°C 0.4 0.5 %
ΔV
VREF-TV
Total Variation
(3)
Line, Load, Temp 7.35 7.65 V
ΔV
VREF-LS
Long-Term Stability
(3)
T
J
=125°C, 0 ~ 1000 HRs 5 25 mV
I
REF-MAX
Maximum Current V
VREF
> 7.35 V 5 mA
PFC OVP Comparator
V
PFC-OVP
Over-Voltage Protection 2.70 2.75 2.80 V
ΔV
PFC-OVP
PFC OVP Hysteresis 200 250 300 mV
Low-Power Detect Comparator
V
VEAOFF
VEA Voltage OFF OPFC 0.2 0.3 0.4 V
V
IN
OK Comparator
V
RD-FBPFC
Voltage Level on FBPFC to
Enable OPWM During Startup
2.3 2.4 2.5 V
ΔV
RD-FBPFC
Hysteresis 1.15 1.25 1.35 V
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