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SG6849 数据表(PDF) 4 Page - List of Unclassifed Manufacturers

部件名 SG6849
功能描述  Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
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制造商  ETC2 [List of Unclassifed Manufacturers]
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标志 ETC2 - List of Unclassifed Manufacturers

SG6849 数据表(HTML) 4 Page - List of Unclassifed Manufacturers

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Product Specification
Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
© System General Corp.
- 4 -
www.sg.com.tw
Version 1.0(IRO33.0002.B3)
Dec.29, 2003
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter
Value
Unit
VDD
DC Supply Voltage*
Zener Clamp
Zener Current
25
30
10
V
V
mA
VFB
FB Pin Input Voltage
-0.3 to 7
V
VSENSE
Sense Pin Input Voltage
-0.3 to 7
V
PD
Power Dissipation
300
mW
RθJA
Thermal Resistance (Junction to Air)
SOT-26
DIP-8
243.3
113.0
°C/W
RθJC
Thermal Resistance (Junction to Case)
SOT-26
DIP-8
115
67.1
°C/W
TJ
Operating Junction Temperature
150
°C
TSTG
Storage Temperature Range
-55 to +150
°C
TL
Lead Temperature (Soldering)
20 sec
SOT-26
10 sec
DIP-8
220
260
°C
ESD Capability, Human Body Model
3.0
kV
ESD Capability, Machine Model
300
V
*All voltage values, except differential voltages, are given with respect to the network ground terminal.
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
VDD
DC Supply Voltage
<
22.7
V
TA
Operating Ambient Temperature
-30 to +85
°C
ELECTRICAL CHARACTERISTICS (VDD=15V, TA=25°C)
Feedback Input Section
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
IOZ
Zero Duty-Cycle FB Input Current
1.15
1.4
mA
VFB
Open Loop Voltage
4.5
V
RFB
Input Impedance
FB Input Current = 0.1mA
2.4
kΩ
FB Input Current = 0mA
20
22.7
25
V
VDDZ
VDD Feedback Threshold Voltage*
FB Input Current = 0.8mA
18
20
22
V
*The feedback input is pulled by a transistor that is controlled by the VDD signal while VDD
V
DDZ.


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