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GDTL494 数据表(PDF) 2 Page - E-Tech Electronics LTD

部件名 GDTL494
功能描述  V O L T A G E M O D E P W M C O N T R O L C II R C U II T
PDF  5 Pages
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制造商  ETL [E-Tech Electronics LTD]
网页  http://e-tech.com.hk
标志 ETL - E-Tech Electronics LTD

GDTL494 数据表(HTML) 2 Page - E-Tech Electronics LTD

  GDTL494 Datasheet HTML 1Page - E-Tech Electronics LTD GDTL494 Datasheet HTML 2Page - E-Tech Electronics LTD GDTL494 Datasheet HTML 3Page - E-Tech Electronics LTD GDTL494 Datasheet HTML 4Page - E-Tech Electronics LTD GDTL494 Datasheet HTML 5Page - E-Tech Electronics LTD  
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ISSUED DATE :2003/05/26
REVISED DATE :2004/10/05B
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
Oscillator Frequency
fosc
1
300
kHz
Operating Free-Air Temperature
Ta
0
70
:
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 = 7to 40 V
2
25
mV
Output Regulation
Io=1 to 10mA
1
15
mV
Output Voltage Change with Temperature
TA=MIN to MAX(note2)
0.2
1
%
Short-Circuit Output Current
Vref=0
35
mA
Oscillator Section
Frequency
CT=0.01 f,RT=120k
10
kHz
Standard Deviation of Frequency
All Values of Vcc CT,RT,TA constant
10
%
Frequency Change with Voltage
Vcc=7v to 40v , Ta = 25 :
0.1
%
Frequency Change with Temperature
CT=0.01 f,RT=12 k , TA=MIN to MAX
12
%
Amplifier Section
Input Offset Voltage
Error
Vo(pin 3)=2.5v
2
10
mV
Input Offset Current
Vo(pin 3)=2.5v
25
250
nA
Input Bias Current
Vo(pin 3)=2.5v
0.2
1
A
Common-Mode Input Voltage
Range
Error
Vcc=7V to 40V
-0.3 to
Vcc-2
V



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