PJ494CS 데이터 시트보기 (PDF) - Promax Johnton
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PJ494CS Datasheet PDF : 11 Pages
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PJ494
Switchmode Pulse Width Modulation Control Circuit
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage
Amplifier input voltage
Collector output voltage
Collector output current(each transistor)
Current into feedback terminal
Timing capacitor
Timing resistor
Oscillator frequency
Operating free-air temperature
Symbol
Min
Vcc
7
Vi
-0.3
Vo
CT
0.47
RT
1.8
1
TA
0
Max
Unit
40
V
Vcc-2
40
200
mA
0.3
10000
nF
500
KΩ
300
KHz
70
℃
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING FREE-AIR TEMPERATURE
Vcc=15V, f=10KHz (unless otherwise noted).
REFERENCE SECTION
Parameter
Test Conditions*
Output voltage(Vref)
Line regulation
Load regulation
Output voltage change with temperature
Short-circuit output current***
Io=1mA
Vcc=7V to 40V
Io=1mA to 10mA
∆TA=MIN to MAX
Vref=0
Value
Unit
Min
Typ
Max
4.75
5
5.25
V
--
--
2.0
3.0
25
15
mV
--
0.2
1
%
15
35
75
mA
OSCILLATOR SECTION
Parameter
Frequency
Standard deviation of frequency****
Frequency change with voltage
Frequency change with temperature***
Test Conditions*
CT=0.001µF,RT=30KΩ
CT=0.001µF,RT=30KΩ
Vcc=7V to 40V, TA=25℃
CT=0.001µF,RT=30KΩ
∆TA=MIN to MAX
Value
Min Typ Max
--
40
--
--
3.0
--
--
0.1
--
--
--
12
ERROR AMPLIFIER SECTION
Parameter
Input offset voltage
Input offset current
Input bias current
Common-mode input voltage range
Open-loop voltage amplification
Unity-gain bandwidth
Common-mode rejection ratio
Power Supplu Rejection Ratio
Output sink current (pin 3)
Output source current (pin 3)
Test Conditions*
Vo=(pin 3)=2.5V
Vo=(pin 3)=2.5V
Vo=(pin 3)=2.5V
Vcc=7V to 40V
∆Vo=3V,RL=2KΩ,Vo=0.5 to 3.5V
RL=2KΩ,Vo=0.5 to 3.5V
∆Vo=40V, TA=25℃
∆Vcc=33V,Vo=2.5V,RL=2KΩ
VID=-15mV to -5V,V(PIN3)=0.7V
VID=15mV to 5V,V(PIN3)=3.5V
Value
Min Typ** Max
--
2.0
10
--
5.0
250
--
-0.1
-1.0
-0.3 toVcc-2
70
95
--
--
800
--
65
90
--
--
100
--
0.3
0.7
--
2.0
-4.0
--
OUTPUT SECTION
Parameter
Test Conditions
Value
Min
Typ
Max
Collector off-state current
Emitter off-state current
VCE=40V,VCC=40V
--
Vcc=Vc=40V, VE=0
--
2.0
100
--
-100
Collector-emitter saturation Common-emitter VE=0, Ic=200mA
--
voltage
Emitter-follower Vc=15V, IE=-200mA
--
Output control input current
VI=Vref
--
1.1
1.3
1.5
2.5
--
3.5
Unit
KHz
%
Unit
mA
nA
µA
V
dB
KHz
dB
dB
mA
mA
Unit
µA
V
mA
2-11
2002/11.rev.A
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