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FSCQ Datasheet(PDF) 8 Page - Fairchild Semiconductor

Part # FSCQ
Description  Green Mode Fairchild Power Switch (FPS??
Download  45 Pages
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FSCQ Datasheet(HTML) 8 Page - Fairchild Semiconductor

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FSCQ-Series Rev. 1.1.2
Electrical Characteristics (Continued)
(TA = 25°C unless otherwise specified)
Notes:
6. These parameters, although guaranteed, are tested only in EDS (wafer test) process.
7. These parameters, although guaranteed at the design, are not tested in mass production.
Parameter
Symbol
Condition
Min.
Typ. Max. Unit
Control Section
Switching Frequency
FOSC
VFB = 5V, VCC = 18V
18
20
22
kHz
Switching Frequency Variation7
∆F
OSC
-25
°C ≤ T
A ≤ 85°C0
±5
±10
%
Feedback Source Current
IFB
VFB = 0.8V, VCC = 18V
0.5
0.65
0.8
mA
Maximum Duty Cycle
DMAX
VFB = 5V, VCC = 18V
92
95
98
%
Minimum Duty Cycle
DMIN
VFB = 0V, VCC = 18V
–
0
–
%
UVLO Threshold Voltage
VSTART
VFB = 1V
14
15
16
V
VSTOP
89
10
Soft Start Time6
TSS
18
20
22
ms
Burst Mode Section
Burst Mode Enable Feedback Voltage
VBEN
0.25
0.40
0.55
V
Burst Mode Feedback Source Current
IBFB
VFB = 0V
60
100
140
µA
Burst Mode Switching Time
TBS
VFB = 0.9V, Duty = 50%
1.2
1.4
1.6
ms
Burst Mode Hold Time
TBH
VFB = 0.9V → 0V
1.2
1.4
1.6
ms
Protection Section
Shutdown Feedback Voltage
VSD
VCC = 18V
7.0
7.5
8.0
V
Shutdown Delay Current
IDELAY
VFB = 5V, VCC = 18V
4
5
6
µA
Over Voltage Protection
VOVP
VFB = 3V
11
12
13
V
Over Current Latch Voltage6
VOCL
VCC = 18V
0.9
1.0
1.1
V
Thermal Shutdown Temp7
TSD
140
–
–
°C


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