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SDC2921 датащи(PDF) 6 Page - Shaoxing Devechip Microelectronics Co., Ltd

номер детали SDC2921
подробное описание детали  Voltage Mode PWM Controller
PDF  13 Pages
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производитель  SDC [Shaoxing Devechip Microelectronics Co., Ltd]
домашняя страница  http://www.sdc-semi.com/e/index.asp
Logo SDC - Shaoxing Devechip Microelectronics Co., Ltd

SDC2921 датащи(HTML) 6 Page - Shaoxing Devechip Microelectronics Co., Ltd

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Datasheet
December, 2013 Rev. 1.2
6/13
©
2013 Shaoxing Devechip Microelectronics Co., Ltd.
www.sdc-semi.com
Voltage Mode PWM Controller
SDC2921
Electrical Characteristics (Ta=25°C, VCC=5.0V, unless otherwise specified)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Dead Time Control Section
Input threshold voltage 1
VTHDT
Zero duty cycle
-
3.0
3.3
V
Input threshold voltage 2
Max duty cycle
-
0.1
-
V
Error Amp Section
Open loop voltage gain
GV
0.5V~3.5V
-
65
-
dB
Cross over point
BG
0dB
1800
2200
2600
kHz
VIN- bias voltage(SDC2921A)
VN
VIN- open
2.38
-
2.47
V
VIN- bias voltage(SDC2921B)
VN
VIN- open
2.47
-
2.52
V
Output Section
Output saturation voltage
VDSSAT
IC=100mA
-
1.0
1.3
V
Drain off-state current
IDOFF
VCC=VS= VD=0V
-
2
10
uA
Rising time
tr
-
-
100
200
ns
Falling time
tf
-
-
50
200
ns
Protection Section
3.3V OVP
V33OVP
-
3.8
4.1
4.3
V
5V OVP
V5OVP
-
5.8
6.2
6.6
V
12V OVP
V12OVP
-
4.41
4.64
4.90
V
PT OVP
VPTOVP
-
1.2
1.25
1.3
V
3.3V UVP
V33UVP
-
1.78
1.98
2.18
V
5V UVP
V5UVP
-
2.70
3.00
3.30
V
12V UVP
V12UVP
-
2.11
2.37
2.63
V
UVP disable voltage
VPTDIS
-
0.55
0.62
0.68
V
UVP delay time
tUVP
-
100
280
500
ms
Remote On/Off Section
Rem high input voltage
VREMH
-
2.0
-
-
V
Rem low input voltage
VREML
-
-
-
0.8
V
Rem pull high voltage
VREMO
-
2.0
-
5.25
V
Rem on delay time
tREMON
-
30
36
42
ms
Rem off delay time
tREMOFF
-
3.5
4.5
5.5
ms
SDC
CONFIDENTIAL
DOCUMENT



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