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LM494IN Folha de dados(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Nome de Peças LM494IN
Descrição Electrónicos  Pulse Width Modulated Control Circuit
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM494IN Folha de dados(HTML) 3 Page - National Semiconductor (TI)

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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 (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
PWM COMPARATOR SECTION
(Figure 9)
VTHI
Inhibit Threshold Voltage
Zero Duty Cycle
40
45
V
IOb
Output Sink Current
05V s V3 s 35V
b
02
b
06
mA
(Note 4)
IOa
Output Source Current
05V s V3 s 35V
20
mA
(Note 4)
OUTPUT SECTION
VCE(sat)
Output Saturation
VE e 0V
0 C s TA s a70 C
Voltage Common Emitter
IC e 200 mA
b
40 C s TA s a85 C
11
13
Configuration
(Figure 3)
V
Emitter Follower
VC e 15V IE e 200 mA
15
25
Configuration
(Figure 4)
IC(off)
Collector Off-State Current
VCC e 40V VCE e 40V
20
100
m
A
IE(off)
Emitter Off-State Current
VCC e VC e 40V
0 C s TA s a70 C
b
100
m
A
VE e 0
b
40 C s TA s a85 C
OUTPUT CONTROL
(Figure 6)
VOCL
Output Control Voltage
Required for Single Ended or
04
V
Parallel Output Operation
VOCH
Output Control Voltage
Required for Push-Pull
24
V
Operation
TOTAL DEVICE
ICC
Standby Power Supply Current
60
10
mA
OUTPUT AC CHARACTERISTICS
Use Recommended Operating Conditions with TA e 25 C
tr
Rise Time of Output Voltage
Common Emitter Configuration
100
200
(Figure 3)
ns
Emitter Follower Configuration
100
200
(Figure 4)
tf
Fall Time of Output Voltage
Common Emitter Configuration
25
100
(Figure 3)
ns
Emitter Follower Configuration
40
100
(Figure 4)
Note 1
TJ Max e 150 C for the Molded DIP and 175 C for the Ceramic DIP
Note 2
Ratings apply to ambient temperature at 25 C Above this temperature derate the 16L-Ceramic DIP at 10 mW C and the 16L-Molded DIP at 83 mW C
Note 3
Selected devices with tightened tolerance reference voltage available
Note 4
These limits apply when the voltage measured at Lead 3 is within the range specified
3


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