FAN4800IM View Datasheet(PDF) - Fairchild Semiconductor
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FAN4800IM Datasheet PDF : 20 Pages
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Electrical Characteristics (Continued)
Unless otherwise stated, these specifications apply: VCC = 15V, RT = 52.3kΩ, CT = 470pF, TA = -40°C to 125°C.
Symbol
Parameter
Condition
Min. Typ. Max. Unit
PFC
Dmin.
Dmax.
RON(low)1
RON(low)2
Vol1
Minimum Duty Cycle
Maximum Duty Cycle
Output Low Rdson
Output Low Voltage(1)
RON(high)1
RON(high)2
tr(pfc)
PWM
Output High Rdson
Rise/Fall Time(1)
VIEAO > 4.0V
0
%
VIEAO < 1.2V
92
95
%
IOUT = -20mA at TA = 25°C
15
Ω
IOUT = -100mA at TA = 25°C
15
Ω
IOUT = -10mA, VCC = 9V,
TA = 25°C
0.4 0.8
V
IOUT = 20mA at TA = 25°C
15
20
Ω
IOUT = 100mA at TA = 25°C
15
20
Ω
CL = 1000pF
50
ns
D
Duty Cycle Range
0-42 0-47 0-49 %
RON(low)3
RON(low)4
Output Low Rdson
Vol2
Output Low Voltage
RON(high)3
RON(high)4
tr(pwm)
PWM(ls)
Output High Rdson
Rise/Fall Time
PWM Comparator Level Shift
IOUT = -20mA at TA = 25°C
15
Ω
IOUT = -100mA at TA = 25°C
15
Ω
IOUT = -10mA, VCC = 9V,
TA = 25°C
0.4 0.8
V
IOUT = 20mA at TA = 25°C
15
20
Ω
IOUT = 100mA at TA = 25°C
CL = 1000pF(1)
15
20
Ω
50
ns
0.6 0.9 1.2
V
SUPPLY
Ist
Iop
Vth(start)
Vth(hys)
Start-up Current
Operating Current
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
VCC = 12V, CL = 0pF
14V, CL = 0pF
100 200 µA
2.5 7.0 mA
12.74 13.00 13.26 V
2.80 3.00 3.20 V
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; VEAO (MAX.) = 6V.
© 2005 Fairchild Semiconductor Corporation
FAN4800 Rev. 1.0.5
7
www.fairchildsemi.com
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