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FAN4800IN Datasheet(PDF) 7 Page - Fairchild Semiconductor

Part # FAN4800IN
Description  Low Start-Up Current PFC/PWM Controller Combos
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN4800IN Datasheet(HTML) 7 Page - Fairchild Semiconductor

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© 2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4800 Rev. 1.0.5
7
Electrical Characteristics (Continued)
Unless otherwise stated, these specifications apply: VCC = 15V, RT = 52.3kΩ, CT = 470pF, TA = -40°C to 125°C.
Notes:
1. This parameter, although guaranteed by design, is not 100% production tested.
2. Includes all bias currents to other circuits connected to the VFB pin.
3. Gain = K × 5.375V; K = (ISENSE – IOFFSET) × [IAC × (VEAO – 0.625)]
-1; V
EAO (MAX.) = 6V.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
PFC
Dmin.
Minimum Duty Cycle
VIEAO > 4.0V
0
%
Dmax.
Maximum Duty Cycle
VIEAO < 1.2V
92
95
%
RON(low)1
Output Low Rdson
IOUT = -20mA at TA = 25°C
15
Ω
RON(low)2
IOUT = -100mA at TA = 25°C
15
Ω
Vol1
Output Low Voltage(1)
IOUT = -10mA, VCC = 9V,
TA = 25°C
0.4
0.8
V
RON(high)1
Output High Rdson
IOUT = 20mA at TA = 25°C
15
20
Ω
RON(high)2
IOUT = 100mA at TA = 25°C
15
20
Ω
tr(pfc)
Rise/Fall Time(1)
CL = 1000pF
50
ns
PWM
D
Duty Cycle Range
0-42
0-47
0-49
%
RON(low)3
Output Low Rdson
IOUT = -20mA at TA = 25°C
15
Ω
RON(low)4
IOUT = -100mA at TA = 25°C
15
Ω
Vol2
Output Low Voltage
IOUT = -10mA, VCC = 9V,
TA = 25°C
0.4
0.8
V
RON(high)3
Output High Rdson
IOUT = 20mA at TA = 25°C
15
20
Ω
RON(high)4
IOUT = 100mA at TA = 25°C
15
20
Ω
tr(pwm)
Rise/Fall Time
CL = 1000pF
(1)
50
ns
PWM(ls)
PWM Comparator Level Shift
0.6
0.9
1.2
V
SUPPLY
Ist
Start-up Current
VCC = 12V, CL = 0pF
100
200
µA
Iop
Operating Current
14V, CL = 0pF
2.5
7.0
mA
Vth(start)
Under-Voltage Lockout Threshold
12.74
13.00
13.26
V
Vth(hys)
Under-Voltage Lockout Hysteresis
2.80
3.00
3.20
V


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