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S494 PDF даташит

Спецификация S494 изготовлена ​​​​«AUK corp» и имеет функцию, называемую «Pulse Width Modulation».

Детали детали

Номер произв S494
Описание Pulse Width Modulation
Производители AUK corp
логотип AUK corp логотип 

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S494 Даташит, Описание, Даташиты
Semiconductor
S494
Pulse Width Modulation
Description
The S494 is a monolithic integrated circuit which includes all the necessary building blocks
for the design of pulse width modulate(PWM) switching power supplies, including push-pull,
bridge and series configuration. The device can operate at switching frequencies between
1KHz and 300KHz and output voltage up to 40V. The S494 is specified over an operating
temperature range of -40to85.
Features
Uncommitted output transistors capable of 200mA source or sink
Internal protection from double pulsing of out-puts with narrow pulse widths or with
supply voltages bellows specified limits
Easily synchronized to other circuits
Dead time control comparator
Output control selects single-ended or push-pull operation
Ordering Information
Type NO.
S494
Marking
S494
Package Code
SOP-16
Outline Dimensions
unit : mm
PIN Connections
1. Non-INV Input
2. INV Input
3. Feed-Back
4. Dead-Time Control
5. CT
6. RT
7. GND
8. C1
9. E1
10. E2
11. C2
12. Vcc
13 Output Control
14. Ref Out
15. INV-Input
16. Non-INV Input
KSI-K003-000
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S494 Даташит, Описание, Даташиты
S494
Absolute Maximum Ratings
Characteristic
supply voltage
Voltage From Any Pin to Ground
(except pin 8 and pin 11)
Output Collector Voltage
Peak Collector Current
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
VCC
VIN
VC1, VC2
IC1, IC2
PD
Topr
Tstg
Ratings
42
VCC+0.3
42
250
1500
-40 ~ 85
-65 ~ 150
Ta=25°C
Unit
V
V
V
mA
mW
°C
°C
Recommended Operating Condition
Characteristic
Symbol
supply voltage
Voltage on Any Pin Except Pin
8 and 11(Referenced to Ground)
Output Voltage
Output Collector Current
Timing Capacitor
Timing Capacitor
Timing Resistor
Oscillator Frequency
VCC
VIN
VC1, VC2
IC1, IC2
Ct
Ct
Rt
fOSC
Min.
7
-0.3
-0.3
-
470
-
1.8
1
Max.
40
VCC+0.3
40
200
-
10
500
300
Unit
V
V
V
mA
PF
KHz
Electrical Characteristics
Reference Section
Characteristic
Symbol
Test Condition
Reference Voltage
Vref Iref = 1.0mA
Line Regulation
Load Regulation
Temperature Coefficient
VLINE
VLOAD
-
7V < Vcc < 40V
1mA< IREF <10mA
0°C < Ta <70°C
Min. Typ. Max.
4.75 5.00 5.25
- 2 25
- 1 15
- 0.01 0.03
Unit
V
mV
mV
%/°C
Oscillator Section
Characteristic
Oscillator Frequency
Oscillator Frequency Change
Over Operating Temperature
Range
Symbol
Test Condition
fOSC Ct=0.01 , Rt=12
Δ fSOC Ct=0.01 , Rt=12
Min. Typ. Max. Unit
- 10 -
- - 2%
KSI-K003-000
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S494 Даташит, Описание, Даташиты
S494
Dead Time Control Section
Characteristic
Symbol
Test Condition
Input Bias Current (Pin4)
Max. Duty cycle, Each Output
Input Threshold
Voltage
Zero Duty
Max Duty
IIB(DT)
DC(Max)
Vcc = 15V, 0V < V4 < 5.25V
Vcc = 15V, Pin4 = 0V,
Output Control Pin = Vref
VTH -
Error Amplifier Section
Characteristic
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Common Mode
voltage Range
Large Signal Open Loop
Voltage Range
Unity Gain Band width
Symbol
Test Condition
VIOS
IIOS
IIB
V3 = 2.5V
V3 = 2.5V
V3 = 2.5V
VICR
7V VCC 40V
GVO 0.5V V3 3.5V
fC -
PWM Comparator Section (Pin3)
Characteristic
Symbol
Test Condition
Inhibit Threshold Voltage
Output Source Current
Output Sink Current
VTHI
Zero duty cycle
Io+ 0.5V < V3 < 3.5V
Io- 0.5V< V3 < 3.5V
Output Section
Characteristic
Symbol
Test Condition
Output Satur- Common-Emitter
ation Voltage Emitter-Follower
VCE(SAT)
VE= 15V, IC = 200mA
VC =15V, IE = 200mA
Collector off-state Current
IC(off)
VCC = VC = 40V, VE = 0
Emitter off-state Current
IE(off)
VCC = VC = 40V, VE = 0
Output Control(Pin 13)
Output Control Voltage
Required for single-Ended or
Parallel Output Operation
Output Control Voltage Req-
uired for Push-pull operation
VOCL
-
VOCH
-
Total Device
Standby power Supply
Current
ICC -
: These limits apply when the voltage measured at Pin 3 is with in the range specified.
Min. Typ. Max.
- -2 -10
43 -
45
- 3 3.3
0-
-
Unit
%
V
Min. Typ. Max.
- 2 10
- 25 250
- 0.2 1
Unit
mV
nA
-0.3
-
VCC
V
60 74
- 650
-
-
dB
Min. Typ. Max.
- 4 4.5
2-
-
-0.2 -0.6
-
Unit
V
mA
mA
Min. Typ. Max.
- 1.1 1.3
- 1.5 2.5
- 2 100
- - -100
Unit
V
- - 0.4 V
2.4 - - V
- 6 10 mA
KSI-K003-000
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