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UC3843A 데이터시트(PDF) 3 Page - Unisonic Technologies

부품명 UC3843A
상세설명  CURRENT MODE PWM CONTROL CIRCUITS
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제조업체  UTC [Unisonic Technologies]
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UC3842A/3843A
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
3 of 9
www.unisonic.com.tw
QW-R103-002,D
ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage(Low Impedance Source)
VCC
30
V
Supply Voltage(ICC<30mA)
VCC
Self Limiting
V
Output Current ( Peak )
IO(PEAK)
±1
A
Output Energy (capacity Load)
5
µJ
Analog Inputs(pin 2,3)
VI(ANA)
-0.3 ~ +6.3
V
Error Amplifier Output Sink Current
ISINK(EA)
10
mA
DIP-8
1.0
W
Power Dissipation( Ta≦25
°C)
SOP-8
PD
0.5
W
Derated at Ta>25
°C
PD
8
mW/
°C
Junction Temperature
TJ
+150
°C
Storage Temperature
TSTG
-65 ~ +150
°C
Note Absolute maximum ratings are those values beyond which the device which the device could be permanently
damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(0
°C≦Ta≦70°C, V
CC=15V, RT=10kΩ, CT=3.3nF, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Reference Section
Output Voltage
VREF
TJ=25°C,IOUT=1mA
4.9
5
5.1
V
Line Regulation
∆V
REF
12≦VIN25V
6
20
mV
Load Regulation
∆V
REF
1≦IOUT=20mA
6
25
mV
Temperature Stability
(Note 1)
0.2
0.4
mV/
°C
Total Output Variation
Line, Load, Temp(Note 1)
4.82
5.18
V
Output Noise Voltage
Vosc
10Hz≦f≦10kHz,TJ=25°C (Note 1)
50
µV
Long Term Stability
Ta=25
°C,1000Hrs(Note 1)
5
25
mV
Output Short Circuit
ISC
-30
-100
-180
mA
Oscillator Section
Initial Accuracy
f
TJ=25°C
47
52
57
kHz
Voltage Stability
∆f/∆Vcc 12≦VCC≦25V
0.2
1
%
Temperature Stability
Tmin≦Ta≦Tmax(Note 1)
5
%
Amplitude
Vosc
Vpin 4 peak to peak
1.7
V
Error Amplifier Section
Input Voltage
VI(EA)
Vpin 1=2.5V
2.42
2.50
2.58
V
Input Bias Current
II(BIAS)
-0.3
-2
µA
AVOL
2 ≦VOUT≦4V
60
90
dB
Unity Gain Bandwidth
TJ=25°C (Note 1)
0.7
1
MHz
PSRR
I2≦VCC≦25V
60
70
dB
Output Sink Current
IO(SINK)
Vpin 2=2.7V,Vpin 1=1.1V
2
6
mA
Output Source Current
IO(SOURCE) Vpin 2=2.3V,Vpin 1=5V
-0.5
-0.8
mA
VOUT High
VOH
Vpin 2=2.3V, RL=15kΩ to GND
5
6
V
VOUT Low
VOL
Vpin 2=2.7V,Vpin 1=1.1V
0.7
1.1
V


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