参数资料
型号: SG5841JSZ
厂商: Fairchild Semiconductor
文件页数: 6/15页
文件大小: 0K
描述: IC PWM FLYBACK ISOLATED CM 8-SOP
产品变化通告: Mold Compound Change 12/Dec/2007
标准包装: 2,500
输出隔离: 隔离
频率范围: 62kHz ~ 68kHz
输入电压: 11 V ~ 24.7 V
输出电压: 18V
工作温度: -20°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: *
包装: 带卷 (TR)
Electrical Characteristics
V DD = 15V, T A = 25°C, unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
V DD Section
V DD-OP
Continuously Operating Voltage
24.7
V
V DD-ON
V DD-OFF
I DD-ST
I DD-OP
V DD-CLAMP
Start Threshold Voltage
Minimum Operating Voltage
Startup Current
Operating Supply Current
V DD Over-Voltage-Clamping Level
V DD =V DD-ON –0.16V
V DD =15V, R I =26K ? ,
GATE=OPEN
15
9
28
16
10
14
4
29
17
11
30
5
V
V
μA
mA
V
t D-VDDCLAMP
V DD Over-Voltage-Clamping
Debounce Time
R I =26K ?
50
100
200
μs
R I Section
RI NOR
RI MAX
RI MIN
R I Operating Range
Maximum R I Value for Protection
Minimum R I Value for Protection
15.5
230
10
36.0
K ?
K ?
K ?
Oscillator Section
Normal
Center Frequency
R I =26K ?
62
65
68
f OSC
PWM
Frequency
Hopping Range
R I =26K ?
(SG5841J only)
±3.7
±4.2
±4.7
KHz
t HOP
f OSC-G
f DV
f DT
Hopping Period
Green-Mode Frequency
Frequency Variation vs. V DD
Deviation
Frequency Variation vs.
Temperature Deviation
R I =26K ?
(SG5841J only)
R I =26K ?
V DD =11.5V to 24.7V
T A =-20 to +85 ° C
3.9
18
4.4
22
4.9
25
5
5
ms
KHz
%
%
Feedback Input Section
A V
Z FB
FB Input to Current Comparator
Attenuation
Input Impedance
1/3.75
4
1/3.20
1/2.75
7
V/V
K ?
V FB-OPEN
FB Output High Voltage
FB pin open
5
6
V
V FB-OLP
FB Open-Loop Trigger Level
4.2
4.5
4.8
V
t D-OLP
V FB-N
V FB-G
Delay Time of FB Pin Open-Loop
Protection
Green-Mode Entry FB Voltage
Green-Mode Ending FB Voltage
R I =26K ?
R I =26K ?
R I =26K ?
26
1.9
29
2.1
V FB-N -0.5
32
2.3
ms
V
V
f OSC
f OSC -GREEN
Figure 5. PWM Frequency
? 2006 Fairchild Semiconductor Corporation
SG5841J ? Rev. 1.3.5
6
www.fairchildsemi.com
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