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UTCTL494 датащи(PDF) 2 Page - Unisonic Technologies

номер детали UTCTL494
подробное описание детали  VOLTAGE MODE PWM CONTROL CIRCUIT
PDF  6 Pages
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UTCTL494 датащи(HTML) 2 Page - Unisonic Technologies

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UTCTL494
LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R103-004,A
BLOCK DIAGRAM
Error
Amplifier
Error
Amplifier
dead time
control
dead time comparator
oscillator
Pulse Steering
Flip-Flop
Input
control
5V reference
regulation
Vref
Vcc
GND
PWM comparator
0.7mA
1
2
3
4
5
6
7
8
9
10
11
14
13
12
15
16
T
Q
Q
Q1
Q2
RT
CT
C1
E1
C2
E2
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VALUE
UNIT
MIN
MAX
Supply Voltage
Vcc
7
40
V
Amplifier Input Voltage
Vi
-0.3
Vcc-2
V
Collector Output Voltage
Vo
40
V
Collector Output Current(each Transistor)
Ic
200
mA
Current into Feedback
If
0.3
mA
Timing Capacitor
CT
0.47
10000
nF
Timing Resistor
RT
1.8
500
k
Ω
Oscillator Frequency
fosc
1
300
kHz
Operating Free-Air Temperature
Ta
0
70
°C
ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range,VCC=15V,f=1kHz,Unless otherwise specified)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Reference Section
Output Voltage
Io=1mA
4.75
5
5.25
V
Input
Regulation
Vcc=7V to 40V
2
25
mV
Output Regulation
Io=1 to 10mA
1
15
mV
Output Voltage Change with
Temperature
∆TA=MIN to MAX(note 2)
0.2
1
%
Short-Circuit Output Current
Vref=0
35
mA
Oscillator Section
Frequency
CT=0.01
µF,RT=120kΩ
10
kHz



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