LM3524 National Semiconductor, LM3524 Datasheet - Page 2

• Manufacturer Part Number: LM3524
• Description: Regulating Pulse Width Modulator
• Manufacturer: National Semiconductor

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REFERENCE SECTION
V
V
V
I
N
OSCILLATOR SECTION
f
f
V
t
ERROR-AMP SECTION
V
I
OS
OSC
OSC
PW
IB
f
f
Electrical Characteristics
(Note 1)
REF
RLine
RLoad
O
OSC
IO
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Collector Supply Voltage
Output Current DC (each)
Oscillator Charging Current (Pin 7)
OSC
OSC
Symbol
(LM2524D)
(LM3524D)
Output Voltage
Line Regulation
Load Regulation
Ripple Rejection
Short Circuit
Current
Output Noise
Long Term
Stability
Max. Freq.
Initial
Accuracy
Freq. Change
with V
Freq. Change
with Temp.
Output Amplitude
(Pin 3) (Note 8)
Output Pulse
Width (Pin 3)
Sawtooth Peak
Voltage
Sawtooth Valley
Voltage
Input Offset
Voltage
Input Bias
Parameter
IN
V
I
f = 120 Hz
V
10 Hz
T
R
(Note 7)
R
(Note 7)
R
(Note 7)
V
T
at 20 kHz R
C
R
R
R
R
V
V
L
IN
REF
A
IN
A
CM
CM
T
T
T
T
T
T
T
T
= 0 mA to 20 mA
= 125˚C
= 1k, C
= 5.6k, C
= 2.7k, C
= −55˚C to +125˚C
= 0.01 µF
= 5.6k, C
= 5.6k, C
= 5.6k, C
= 5.6k, C
= 8V to 40V
= 8 to 40V
= 2.5V
= 2.5V
= 0
f
Conditions
T
10 kHz
T
= 0.001 µF
T
T
T
T
T
T
= 5.6k,
= 0.01 µF
= 0.01 µF
= 0.01 µF
= 0.01 µF
= 0.01 µF
= 0.01 µF
(Note 5)
200 mA
5 mA
40V
55V
40V
2
Typ
550
0.5
0.5
3.4
1.1
10
10
66
50
40
20
20
38
5
5
3
2
1
Internal Power Dissipation
Operating Junction Temperature
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering 4 sec.)
Range (Note 2)
LM2524D
LM3524D
M, N Pkg.
(Note 3)
Tested
Limit
4.85
5.15
17.5
22.5
180
LM2524D
2.4
1.5
3.6
0.8
15
15
25
34
42
1
8
8
(Note 4)
Design
Limit
4.80
5.20
100
500
3.8
0.6
30
25
10
10
Typ
350
0.5
0.5
10
10
66
50
40
20
20
38
5
5
3
2
1
(Note 3)
Tested
Limit
LM3524D
4.75
5.25
17.5
22.5
200
1.0
2.4
1.5
3.8
0.6
25
25
25
30
46
10
10
(Note 4)
Design
−40˚C to +125˚C
−65˚C to +150˚C
Limit
100
50
50
0˚C to +125˚C
µV
mA Max
mA Min
mV/kHr
kHz
kHz
mV
mV
kHz
kHz
kHz
mV
µA
260˚C
Units
µs
%
V
V
V
V
V
rms Max
dB
150˚
%
Max
Max
Min
Max
Min
Min
Max
Max
Max
Max
Max
1W
Max
Max
Min
Min
Min