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STC494 Datasheet(PDF) 2 Page - Suntac Electronic Corp.

Part # STC494
Description  Pulse Width Modulation
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Manufacturer  SUNTAC [Suntac Electronic Corp.]
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Logo SUNTAC - Suntac Electronic Corp.

STC494 Datasheet(HTML) 2 Page - Suntac Electronic Corp.

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2
S
Absolute Maximum Ratings
Ta=25
C
Characteristic
Symbol
Ratings
Unit
supply voltage
VCC
42
V
Voltage From Any Pin to Ground
(except pin 8 and pin 11)
VIN
VCC+0.3
V
Output Collector Voltage
VC1, VC2
42
V
Peak Collector Current
IC1, IC2
250
mA
Power Dissipation
PD
1500
mW
Operating Temperature
Topr
-40 ~ 85
C
Storage Temperature
Tstg
-65 ~ 150
C
Recommended Operating Condition
Characteristic
Symbol
Min.
Max.
Unit
supply voltage
VCC
7
40
V
Voltage on Any Pin Except Pin
8 and 11(Referenced to Ground)
VIN
-0.3
VCC+0.3
V
Output Voltage
VC1, VC2
-0.3
40
V
Output Collector Current
IC1, IC2
-
200
mA
Timing Capacitor
Ct
470
-
PF
Timing Capacitor
Ct
-
10
Timing Resistor
Rt
1.8
500
Oscillator Frequency
fOSC
1
300
KHz
Electrical Characteristics
Reference Section
Characteristic
Symbol
Test Condition
Min.
Typ.
Max.
Unit
Reference Voltage
Vref
Iref = 1.0mA
4.75
5.00
5.25
V
Line Regulation
VLINE
7V < Vcc < 40V
-
2
25
mV
Load Regulation
VLOAD
1mA< IREF <10mA
-
1
15
mV
Temperature Coefficient
-
0
C < Ta <70 C
-
0.01
0.03
%/
C
Oscillator Section
Characteristic
Symbol
Test Condition
Min.
Typ.
Max.
Unit
Oscillator Frequency
fOSC
Ct=0.01
, Rt=12
-
10
-
Oscillator Frequency Change
Over Operating Temperature
Range
fSOC
Ct=0.01
, Rt=12
-
-
2
%
STC494


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