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SG6741 Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part # SG6741
Description  Highly Integrated Green-Mode PWM Controller
Download  12 Pages
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

SG6741 Datasheet(HTML) 5 Page - Fairchild Semiconductor

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© 2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
SG6741 • Rev. 1.3.3
5
Electrical Characteristics
VDD=15V, TA=25°C, unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
VDD Section
VOP
Continuously Operating Voltage
22
V
VDD-ON
Start Threshold Voltage
15.5
16.5
17.5
V
VDD-OFF
Minimum Operating Voltage
9.5
10.5
11.5
V
IDD-ST
Startup Current
VDD-ON – 0.16V
30
µA
IDD-OP
Operating Supply Current
VDD=15V, GATE Open
4
5
mA
IDD-OLP
Internal Sink Current
VDD-OLP +0.1V
50
70
90
µA
VTH-OLP
IDD-OLP off Voltage
6.5
7.5
8.0
V
VDD-OVP
VDD Over-Voltage Protection
25
26
27
V
tD-VDDOVP
VDD Over-Voltage Protection
Debounce Time
100
180
260
µs
HV Section
IHV
Supply Current from HV Pin
VAC=90V (VDC=120V),
VDD=10µF
2.0
mA
IHV-LC
Leakage Current After Startup
HV=500V, VDD=VDD-
OFF+1V
1
20
µ
A
Oscillator Section
Center Frequency
62
65
68
fOSC
Frequency in Nominal Mode
Hopping Range
±3.7
±4.2
±4.7
KHz
tHOP
Hopping Period
4.4
ms
fOSC-G
Green-Mode Frequency
16
18
21
KHz
fDV
Frequency Variation vs. VDD
Deviation
VDD=11V to 22V
5
%
fDT
Frequency Variation vs.
Temperature Deviation
TA=-40 to 105°C
5
%
Continued on the following page…
Figure 5. VFB vs. PWM Frequency
PWM Frequency
fOSC
fOSC-G
VFB-N
VFB-G
VFB-ZDC
VFB


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