LM494 National Semiconductor, LM494 Datasheet - Page 2

• Manufacturer Part Number: LM494
• Description: Pulse Width Modulated Control Circuit
• Manufacturer: National Semiconductor

REFERENCE SECTION
V
Reg
TCV
Reg
I
OSCILLATOR SECTION
f
DEAD TIME CONTROL SECTION
I
DC
V
ERROR AMPLIFIER SECTIONS
V
I
I
V
A
BW
Symbol
OS
OSC
IB (DT)
IO
IB
Absolute Maximum Ratings
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Office Distributors for availability and specifications
Storage Temperature Range
Operating Temperature Range
Lead Temperature
Internal Power Dissipation (Notes 1 2)
Supply Voltage
Voltage from Any Lead to Ground
LM494
Electrical Characteristics
15V f
REF
TH(in)
IO
ICR
VS
f
OSC
(Max)
Ceramic DIP
Molded DIP
Industrial (LM494I)
Commercial (LM494C)
Ceramic DIP (Soldering 60 sec )
Molded DIP (Soldering 10 sec )
16L-Ceramic DIP
16L-Molded DIP
(except Lead 8 and Lead 11)
LINE
LOAD
REF
OSC
e
(Figure 10)
Reference Voltage (Note 3)
Line Regulation of
Reference Voltage
Temperature Coefficient of
Reference Voltage
Load Regulation of
Reference Voltage
Output Short Circuit Current
Oscillator Frequency
Oscillator Frequency Change
Input Bias Current
Maximum Duty Cycle
Each Output
Input Threshold Voltage
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Common Mode
Voltage Range
Large Signal Voltage Gain
Bandwidth
10 kHz unless otherwise specified
Parameter
b
b
b
T
65 C to
65 C to
A
40 C to
I
7 0V
0 C
1 0 mA
V
C
R
C
R
V
V
Output Control
Zero Duty Cycle
Maximum Duty Cycle
V
V
V
V
7 0V
0 5V
REF
0 C to
REF
CC
CC
3
3
3
3
e
T
T
T
T
V
e
e
e
e
e
e
e
e
s
CC
0 C to
e
e
e
s
s
s
e
2 5V
2 5V
2 5V
2 5V
0 01 F
0 01 F
12 k
12 k
T
a
a
15V 0V
15V Lead 4
a
V
s
V
V
1 0 mA
a
a
A s
1 50W
1 04W
0V
175 C
150 C
300 C
265 C
CC s
CC s
3 s
I
85 C
70 C
0 3V
REF s
a
42V
70 C
70 C for the LM494C T
3 5V
40V
40V
e
s
10 mA
Conditions
V
2
V
REF
4 s
e
Output Collector Voltage
Peak Collector Current
ESD Susceptibility
Recommended Operating
Conditions
Power Supply Voltage (V
Voltage on Any Lead
Output Voltage Collector (V
Output Collector Current (I
Timing Capacitor (C
Timing Resistor (R
Oscillator Frequency (f
0V
5 25V
0 C
b
0 C
b
(I
except Leads 8 and 11
(Referenced to Ground) (V
C1
40 C
40 C
s
s
and I
T
T
s
s
A s
A s
C2
T
T
A s
A s
)
A
a
a
e b
70 C
70 C
a
a
T
)
T
85 C
85 C
)
40 C to
OSC
CC
C1
)
)
C1
I
a
b
4 75
)
Min
I
10
45
60
C2
0
V
0 3
85 C for the LM494I V
C2
)
)
b
b
0 01
Typ
650
5 0
2 0
1 0
3 0
2 0
0 2
35
35
10
25
74
0 3V to V
2 0
1 0 kHz to 300 kHz
(to be determined)
1 8 k
470 pF to 10 F
b
Max
5 25
0 03
b
V
250
2 0
2 0
3 3
1 0
25
15
50
10
7 0V to 40V
0 3V to 40V
CC
CC
10
to 500 k
250 mA
200 mA
a
CC
0 3V
Units
% C
42V
kHz
kHz
mV
mV
mA
mV
nA
dB
e
%
%
V
V
V
A
A