UTCTL494 Просмотр технического описания (PDF) - Unisonic Technologies
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UTCTL494 Datasheet PDF : 6 Pages
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UTCTL494 LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
RT
6
CT
5
oscillator
Pulse Steering
Flip-Flop
13
Input
control
Q
T
Q
4
dead time
control
1
2
dead time comparator
0.7mA
Error
Amplifier
3
PWM comparator
16
15
Error
Amplifier
5V reference
regulation
8 C1
Q1
9 E1
11 C2
Q2
10 E2
14
Vref
12
Vcc
7
GND
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Supply Voltage
Vcc
Amplifier Input Voltage
Vi
Collector Output Voltage
Vo
Collector Output Current(each Transistor)
Ic
Current into Feedback
If
Timing Capacitor
CT
Timing Resistor
RT
Oscillator Frequency
fosc
Operating Free-Air Temperature
Ta
VALUE
MIN
MAX
7
40
-0.3
Vcc-2
40
200
0.3
0.47
10000
1.8
500
1
300
0
70
UNIT
V
V
V
mA
mA
nF
kΩ
kHz
°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
∆TA=MIN to MAX(note 2)
0.2
1
%
Temperature
Short-Circuit Output Current
Vref=0
35
mA
Oscillator Section
Frequency
CT=0.01µF,RT=120kΩ
10
kHz
UTC UNISONIC TECHNOLOGIES CO., LTD. 2
QW-R103-004,A
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