FAN4800I Fairchild Semiconductor, FAN4800I Datasheet - Page 8
FAN4800I
Manufacturer Part Number
FAN4800I
Description
The FAN4800 is a controller for power-factor-corrected, switched-mode power supplies
Manufacturer
Fairchild Semiconductor
Datasheet
1.FAN4800I.pdf
(19 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
FAN4800IM
Manufacturer:
FAI
Quantity:
3 380
Part Number:
FAN4800IN
Manufacturer:
FSC
Quantity:
20 000
Part Number:
FAN4800IW
Manufacturer:
FAI
Quantity:
20 000
FAN4800 Rev. 1.0.6
© 2005 Fairchild Semiconductor Corporation
Typical Performance Characteristics
Figure 5. Gain Modulator Transfer Characteristic (K)
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
126
119
112
105
98
91
84
77
70
63
56
0.0 0.5 1.0 1.5 2.0 2.5
Figure 3. Voltage Error Amplifier (gmv)
2.0 2.1 2.2 2.3 2.4 2.5
K
=
Transconductance
I
GAINMOD
I
AC
×
(6 0.625)
V
−
−
V
RMS
I
FB
OFFSET
(V)
(V)
3.0 3.5 4.0 4.5 5.0
2.6 2.7 2.8 2.9 3.0
mV
−
1
(1)
8
100
-10
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
90
80
70
60
50
40
30
20
10
0
0.0
-0.8
Figure 4. Current Error Amplifier (gmi)
0.5
-0.6
1.0
Figure 6. Gain vs. V
-0.4
1.5
Transconductance
Gain
2.0 2.5 3.0 3.5 4.0 4.5 5.0
-0.2
I
SENSE
V
=
RMS
I
SENSE
0.0
(V)
(V)
I
−
AC
0.2
I
OFFSET
RMS
0.4
0.6
www.fairchildsemi.com
0.8
(2)