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UC3843A Arkusz danych(PDF) 2 Page - Unisonic Technologies

Numer części UC3843A
Szczegółowy opis  CURRENT MODE PWM CONTROL CIRCUITS
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Producent  UTC [Unisonic Technologies]
Strona internetowa  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3843A Arkusz danych(HTML) 2 Page - Unisonic Technologies

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UTCUC3842A/3843A LINEARINTEGRATEDCIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R103-002,A
(continued)
PARAMETRER
SYMBOL
VALUE
UNIT
Storage Temperature
Tstg
-65 ~ +150
°C
Note 1: Ta>25
°C, PD derated with 8mW/°C.
ELECTRICAL CHARACTERISTICS(0°C <=Ta<=70°C,VCC=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,Io=1mA
4.9
5
5.1
V
Line Regulation
∆VREF
12<=VIN<=25V
6
20
mV
Load Regulation
∆VREF
1<=Io=20mA
6
25
mV
Temperature Stability
(Note 2)
0.2
0.4
mV/
°C
Total Output Variation
Line, Load, Temp(note 2)
4.82
5.18
V
Output Noise Voltage
Vosc
10Hz<=f<=10kHz,Tj=25
°C (note 2)
50
uV
Long Term Stability
Ta=25
°C,1000Hrs(note 2)
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 2)
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
IBIAS
-0.3
-2
µA
AVOL
2 <=Vo<=4V
60
90
dB
Unity Gain Bandwidth
Tj=25
°C (note 2)
0.7
1
MHz
PSRR
I2<=Vcc<=25V
60
70
dB
Output Sink Current
Isink
Vpin 2=2.7V,Vpin 1=1.1V
2
6
mA
Output Source Current
Isource
Vpin 2=2.3V,Vpin 1=5V
-0.5
-0.8
mA
Vout High
VOH
Vpin 2=2.3V, RL=15k
Ω to GND
5
6
V
Vout Low
VOL
Vpin 2=2.7V,Vpin 1=1.1V
0.7
1.1
V
Current Sense section
Gain
GV
(note 3,4)
2.85
3
3.15
V/V
Maximum Input signal
VI(MAX)
Vpin 1=5V( note 3)
0.9
1
1.1
V
PSRR
12<=Vcc<=25V
70
dB
Input Bias Current
IBIAS
-2
-10
µA
Delay to Output
Vpin 3=0 to 2V
150
300
ns
Output Section
Output Low Level
VOL
Isink=20mA
0.1
0.4
V
Isink=200mA
1.5
2.2
V
Output High Level
VOH
Isource=20mA
13
13.5
V
Isource=200mA
12
13.5
V
Rise Time
tR
Tj=25
°C,CL=1nF(note 2)
50
150
ns
Fall Time
tF
Tj=25
°C,CL=1nF(note 2)
50
150
ns
Under-Voltage Lockout Output Section
Start Threshold
VTH(ST)
UTC3842A
14.5
16
17.5
V
UTC3843A
7.8
8.4
9
V
Min. Operating Voltage
VOPR(min)
After Turn On
UTC3842A
8.5
10
11.5
UTC3843A
7
7.6
8.2
V
PWM Section
Maximum Duty Cycle
D(MAX)
95
97
100
%


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