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FAN6756MRMY Arkusz danych(PDF) 7 Page - Fairchild Semiconductor

Numer części FAN6756MRMY
Szczegółowy opis  FAN6756??mWSaver??PWM Controller
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN6756MRMY Arkusz danych(HTML) 7 Page - Fairchild Semiconductor

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© 2011 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6756 • Rev. 2.0.0
7
Electrical Characteristics (Continued)
VDD=15 V and TJ=TA=25C unless otherwise noted.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
Feedback Input Section
AV
Feedback Voltage to Current-
Sense Attenuation
1/4.5
1/4.0
1/3.5
V/V
ZFB
Regular FB Internal Pull-High
Impedance
8.5
kΩ
VFB-OPEN FB Internal Biased Voltage
FB Pin Open
5.2
5.4
5.6
V
VFB-OLP
Threshold Voltage for OLP
4.3
4.6
4.9
V
tD-OLP
Delay for OLP
45.0
57.5
70.0
ms
VFB-N
Threshold Voltage for Maximum
Switching Frequency
2.6
2.8
3.0
V
VFB-G
Threshold Voltage for Minimum
Switching Frequency
2.1
2.3
2.5
V
VFB-ZDCR
FB Threshold Voltage for Zero-
Duty Recovery
1.9
2.1
2.3
V
VFB-ZDC
FB Threshold Voltage for Zero-
Duty
1.8
2.0
2.2
V
VFB-ZDCR-
DBM
FB Threshold Voltage for Zero-
Duty Recovery in Deep Burst
Mode
VDD=VUVLO+0.3 V
2.5
2.7
2.9
V
VFB-ZDC-
DBM
FB Threshold Voltage for Zero-
Duty in Deep-Burst Mode
2.35
2.55
2.75
V
tDBM
Condition of Triggering Deep
Burst Mode
VFB<VFB-ZDC Repeats 3
Times Continuously
7.5
ms
tD-DBM
Delay time of Entering Deep Burst
Mode
600
ms
VFB-
RECOVER
Threshold Voltage for Leaving
Deep Burst Mode Immediately
Deep Burst Mode,
VDD>VDD-ZFBR and Gate
Off
0.9
V
Current-Sense Section
tPD
Propagation Delay to Output
100
250
ns
tLEB
Leading Edge Blanking Time
200
265
330
ns
VLIMIT-L
Current Limit at Low Line
(VAC-RMS=86 V)
VDC=122 V, Series
R=200 kΩ to HV
0.43
0.46
0.49
V
VLIMIT-H
Current Limit at High Line
(VAC-RMS=259 V)
VDC=366 V, Series
R=200 kΩ to HV
0.36
0.39
0.42
V
VSSCP-L
Threshold Voltage for SSCP at
Low Line (VAC-RMS=86 V)
VDC=122 V, Series
R=200 kΩ to HV
30
50
70
mV
VSSCP-H
Threshold Voltage for SSCP at
High Line (VAC-RMS=259 V)
VDC=366 V, Series
R=200 kΩ to HV
80
100
120
mV
tON-SSCP
Minimum On-time of Gate to
Trigger SSCP
VSENSE<VSSCP-(L/H)
4.00
4.55
5.10
µs
tD-SSCP
Debounce Time for SSCP
VSENSE<VSSCP-(L/H)
110
170
230
µs
tSS
Soft-Start Time
Startup
5
7
9
ms
Continued on the following page…


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