数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

LM494 数据表(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LM494
功能描述  Pulse Width Modulated Control Circuit
PDF  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM494 数据表(HTML) 2 Page - National Semiconductor (TI)

  LM494 Datasheet HTML 1Page - National Semiconductor (TI) LM494 Datasheet HTML 2Page - National Semiconductor (TI) LM494 Datasheet HTML 3Page - National Semiconductor (TI) LM494 Datasheet HTML 4Page - National Semiconductor (TI) LM494 Datasheet HTML 5Page - National Semiconductor (TI) LM494 Datasheet HTML 6Page - National Semiconductor (TI) LM494 Datasheet HTML 7Page - National Semiconductor (TI) LM494 Datasheet HTML 8Page - National Semiconductor (TI)  
Zoom Inzoom in Zoom Outzoom out
 2 / 8 page
background image
Absolute Maximum Ratings
If MilitaryAerospace specified devices are required
please contact the National Semiconductor Sales
OfficeDistributors for availability and specifications
Storage Temperature Range
Ceramic DIP
b
65 Cto a175 C
Molded DIP
b
65 Cto a150 C
Operating Temperature Range
Industrial (LM494I)
b
40 Cto a85 C
Commercial (LM494C)
0 Cto a70 C
Lead Temperature
Ceramic DIP (Soldering 60 sec)
300 C
Molded DIP (Soldering 10 sec)
265 C
Internal Power Dissipation (Notes 1 2)
16L-Ceramic DIP
150W
16L-Molded DIP
104W
Supply Voltage
42V
Voltage from Any Lead to Ground
(except Lead 8 and Lead 11)
VCC a 03V
Output Collector Voltage
42V
Peak Collector Current
(IC1 and IC2)
250 mA
ESD Susceptibility
(to be determined)
Recommended Operating
Conditions
Power Supply Voltage (VCC)
70V to 40V
Voltage on Any Lead
except Leads 8 and 11
(Referenced to Ground) (VI)
b
03V to VCC a 03V
Output Voltage Collector (VC1 VC2)
b
03V to 40V
Output Collector Current (IC1 IC2)
200 mA
Timing Capacitor (CT)
470 pF to 10 mF
Timing Resistor (RT)
18 kX to 500 kX
Oscillator Frequency (fOSC)
10 kHz to 300 kHz
LM494
Electrical Characteristics TA e 0 Cto a70 C for the LM494C TA eb40 Cto a85 C for the LM494I VCC e
15V fOSC e 10 kHz unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
REFERENCE SECTION
VREF
Reference Voltage (Note 3)
IREF e 10 mA
475
50
525
V
RegLINE
Line Regulation of
70V s VCC s 40V
20
25
mV
Reference Voltage
TCVREF
Temperature Coefficient of
0 C s TA s 70 C
001
003
% C
Reference Voltage
RegLOAD
Load Regulation of
10 mA s IREF s 10 mA
10
15
mV
Reference Voltage
IOS
Output Short Circuit Current
VREF e 0V
0 C s TA s a70 C10
35
50
mA
b
40 C s TA s a85 C35
OSCILLATOR SECTION
fOSC
Oscillator Frequency
CT e 001 mF
10
kHz
(Figure 10)
RT e 12 kX
D
fOSC
Oscillator Frequency Change
CT e 001 mF
0 C s TA s a70 C
20
%
RT e 12 kX
b
40 C s TA s a85 C
20
DEAD TIME CONTROL SECTION
IIB (DT)
Input Bias Current
VCC e 15V 0V s V4 s 525V
b
20
b
10
m
A
DC(Max)
Maximum Duty Cycle
VCC e 15V Lead 4 e 0V
45
%
Each Output
Output Control e VREF
VTH(in)
Input Threshold Voltage
Zero Duty Cycle
30
33
V
Maximum Duty Cycle
0
ERROR AMPLIFIER SECTIONS
VIO
Input Offset Voltage
V3 e 25V
V3 e 25V
20
10
mV
IIO
Input Offset Current
V3 e 25V
25
250
nA
IIB
Input Bias Current
V3 e 25V
02
10
m
A
VICR
Input Common Mode
70V s VCC s 40V
b
03
VCC
V
Voltage Range
AVS
Large Signal Voltage Gain
05V s V3 s 35V
60
74
dB
BW
Bandwidth
650
kHz
2



Html Pages

1 2 3 4 5 6 7 8


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com