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SDC608 Datasheet(PDF) 6 Page - Shaoxing Devechip Microelectronics Co., Ltd

Part # SDC608
Description  Current Mode PWM Controller
PDF  11 Pages
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Manufacturer  SDC [Shaoxing Devechip Microelectronics Co., Ltd]
Direct Link  http://www.sdc-semi.com/e/index.asp
Logo SDC - Shaoxing Devechip Microelectronics Co., Ltd

SDC608 Datasheet(HTML) 6 Page - Shaoxing Devechip Microelectronics Co., Ltd

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Datasheet
December, 2013 Rev. 1.2
6/11
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
www.sdc-semi.com
Current Mode PWM Controller
SDC608
Electrical Characteristics (Ta=25°C, VCC =7.0V, unless otherwise specified)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Section
On-state saturation voltage drop
VSAT
IOC=290mA
-
-
1
V
Output rise time
Tr
CL=1nF
-
-
75
ns
Output fall time
Tf
CL=1nF
-
-
75
ns
HV start-up current
ISTC
-
1
-
2.6
mA
Oscillator Section
Oscillation frequency
fOSC
-
55
61
68
kHz
Temperature Stability
△FV
VCC =4.8V~9V
-
-
1
%
Temperature Stability
△FT
Ta=0°C~85°C
-
-
1
%
Feedback Section
Input impedance
Pull-up current
IFB
VFB=2.5V
0.40
0.55
0.70
mA
Pull-down resistance
RFB
-
10
15
20
kΩ
PSRR
-
VCC=4.8V~9V
-
60
70
dB
Current Sampling Section
Over current threshold voltage
VTH_OC
-
0.55
0.60
0.65
V
Current limit
ITH_OC
-
0.27
0.29
0.31
A
PSRR
-
-
-
60
70
dB
Over current detection and control delay
TD
-
-
150
250
ns
PWM Section
Maximum duty cycle
DMAX
VFB=4.0V
52
57
62
%
Minimum duty cycle
DMIN
-
-
1.5
-
%
Power Current Section
Startup leakage current
IST
-
-
15
50
uA
Static operation current
IOP
VFB=0V，VCC=8V
2.0
2.8
4.0
mA
Startup threshold voltage
VST
-
8.6
9.0
9.4
V
Minimal operating voltage
VUV
-
3.2
3.5
3.8
V
Restart voltage
VRST
-
1.7
2.0
2.4
V
Over voltage protection
VOV
-
9.6
10
10.6
V
SDC
CONFIDENTIAL
DOCUMENT



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