FAN4800CU Fairchild Semiconductor, FAN4800CU Datasheet - Page 9

• Manufacturer Part Number: FAN4800CU
• Description: The highly integrated FAN4800A/C and FAN4801/02/02L are specially designed for power supplies that consist of boost PFC and PWM
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN4800AU/CU • Rev. 1.0.0
Electrical Characteristics
Unless otherwise noted, V
PFC Output Driver
PWM I
PWM Output Driver
Soft-Start
Brownout
Sagging Protection
Notes:
3.
4.
V
V
△V
V
Symbol
D
GATE-CLAMP
D
GATE-CLAMP
V
V
V
D
t
V
V
V
V
V
PWM-ILIMIT
V
PWM-BNK
PWM-MAX
RMS-UVH
RMS-SAG
PFC-MAX
RMS-UVL
PFC-MIN
PWM-LS
GATE-H
GATE-H
SS-MAX
This parameter, although guaranteed by design, is not 100% production tested.
This gain is the maximum gain of modulation with a given V
GATE-L
GATE-L
t
t
RMS-UVP
t
I
UVP
SAG
t
t
PD
t
t
SS
R
R
F
F
LIMIT
Comparator
Gate Output Clamping Voltage
Gate Low Voltage
Gate High Voltage
Gate Rising Time
Gate Falling Time
Maximum Duty Cycle
Minimum Duty Cycle
Threshold Voltage
Propagation Delay to Output
Leading-Edge Blanking Time
Gate Output Clamping Voltage
Gate Low Voltage
Gate High Voltage
Gate Rising Time
Gate Falling Time
Maximum Duty Cycle
PWM Comparator Level Shift
Maximum Voltage
Soft-Start Current
VRMS Threshold LOW
VRMS Threshold HIGH
Hysteresis
Under- Voltage Protection Delay
VRMS Threshold SAG LOW
SAG Protection Delay
Parameter
DD
=15V, T
A
(Continued)
= 25°C, T
A
=T
J
V
V
V
V
O/P= 2V to 9V
V
O/P=9V to 2V
V
V
V
V
V
V
O/P=2V to 9V
V
O/P=9V to 2V
V
, R
DD
DD
DD
DD
DD
IEA
IEA
DD
DD
DD
DD
DD
DD
T
=22V
=15V, I
=13V, I
=15V, C
=15V, C
=22V
=15V, I
=13V, I
=15V, C
=15V, C
=15V
<1.2V
>4.5V
=6.8kΩ, and C
9
Condition
O
O
O
O
L
L
L
L
=100mA
=100mA
=100mA
=100mA
=4.7nF,
=4.7nF,
=4.7nF,
=4.7nF,
RMS
voltage when V
T
=1000pF.
VEA
Min.
0.95
49.0
1.00
1.85
0.80
170
750
750
1.3
9.5
is saturated to HIGH.
13
40
40
94
18
30
30
28
8
8
Typ.
1000
1.00
49.5
10.0
1.05
1.90
0.85
250
250
850
1.5
15
70
60
97
19
60
50
10
33
Max.
1250
1.05
50.0
10.5
1.10
1.95
0.90
120
110
350
120
110
950
1.5
1.5
1.8
17
20
38
0
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Unit
mV
ms
ms
µA
ns
ns
ns
ns
ns
ns
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V