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FAN400ATY Datasheet(PDF) 6 Page - Fairchild Semiconductor

Part # FAN400ATY
Description  Low-Power Green-Mode PWM Flyback Power Controller
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN400ATY Datasheet(HTML) 6 Page - Fairchild Semiconductor

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© 2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN400A Rev. 1.0.2
6
Electrical Characteristics (Continued)
Unless otherwise noted, VDD=15V and TA=25°C.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Oscillator Section
Center Frequency
60
65
70
fOSC
Frequency
Hopping Range
±
4.1
±
4.6
±
5.1
kHz
tHOP
Hopping Period
4
ms
fOSC-G
Green Mode Frequency
14.5
17.0
19.5
KHz
VFB-N
Green Mode Entry FB Voltage
2.3
2.6
2.9
V
VFB-G
Green Mode Ending FB Voltage
VFB-N -
0.75
V
VFB-Z
Zero Duty Cycle FB Voltage
1.4
V
SG
Green Mode Modulation Slope
40
70
100
Hz/mV
fDV
Frequency Variation vs. VDD Deviation
VDD=10 to 22V
2
%
fDT
Frequency Variation vs. Temperature Deviation
TA=-20 to 85°C
1.5
5.0
%
Output Section
DCYMAX Maximum Duty Cycle
68
73
78
%
VGATE-L
GATE Low Voltage
IO=10mA
1.5
V
VGATE-H
GATE High Voltage
IO=-10mA
8
V
tr
GATE Rising Time
CL=1nF
150
200
250
ns
tf
GATE Falling Time
CL=1nF
70
90
110
ns
VGATE-
CLAMP
GATE Output Clamping Voltage
VDD=20V
16
17
18
V
Over Temperature Protection (OTP)
TOTP
Protection Junction Temperature
140
°C
TOTP-
RESTART
Restart Junction Temperature
110
°C


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