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SG1526 Datasheet(PDF) 3 Page - Microsemi Corporation

Part # SG1526
Description  REGULATING PULSE WIDTH MODULATOR
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

SG1526 Datasheet(HTML) 3 Page - Microsemi Corporation

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Rev 1.1a
Copyright
© 1994
11861 Western Avenue
∞ Garden Grove, CA 92841
3
(714) 898-8121
∞ FAX: (714) 893-2570
SG1526/SG2526/SG3526
I
SOURCE = 20mA
I
SOURCE = 100mA
I
SINK = 20mA
I
SINK = 100mA
V
C = 40V
C
L = 1000pF
C
L = 1000pF
HIGH Output Voltage
LOW Output Voltage
Collector Leakage
Rise Time
Fall Time
12.5
12
13.5
13
0.2
1.2
50
0.3
0.1
RESET = 0.4V
RESET = 2.4V
Error Clamp Voltage
C
S Charging Current
50
0.1
100
Minimum Duty Cycle
Maximum Duty Cycle
V
COMPENSATION = 0.4V
V
COMPENSATION = 3.6V
45
49
0
R
S ≤ 2KΩ
R
L ≥ 10MΩ, TJ = 25°C
V
PIN1 - VPIN2 ≥ 150mV, ISOURCE = 100µA
V
PIN2 - VPIN1 ≥ 150mV, ISINK = 100µA
R
S ≤ 2KΩ
V
IN = 8V to 35V
mV
nA
nA
dB
V
V
dB
dB
10
-2000
200
0.4
Input Offset Voltage
Input Bias Current
Input Offset Current
DC Open Loop Gain
High Output Voltage
Low Output Voltage
Common Mode Rejection
Supply Voltage Rejection
Current Limit Comparator Section (Note 6)
R
S ≤ 50Ω,
T
J = 25°CmV
µA
90
100
-3
110
-10
I
SOURCE = 40 µA
I
SINK = 3.6mA
V
IH = 2.4V
V
IL = 0.4V
V
V
µA
µA
2.4
4
0.2
-125
-225
0.4
-300
-500
Oscillator Section (Note 4)
T
J = 25°C
V
IN = 8 to 35V
Over Operating T
J
R
T = 150KΩ, CT = 20µF
R
T = 2KΩ, CT = 1.0nF
V
IN = 35V
V
IN = 8V
Initial Accuracy
Voltage Stability
Temperature Stability (Note 9)
Minimum Frequency (Note 9)
Maximum Frequency
Sawtooth Peak Voltage
Sawtooth Valley Voltage
SG3526
Test Conditions
Parameter
Units
ELECTRICAL CHARACTERISTICS (continued)
350
0.5
±3
0.5
7
3.0
1.0
SG1526/2526
Error Amplifier Section (Note 5)
Min. Typ. Max. Min. Typ. Max.
±8
1.0
10
1.0
3.5
350
0.5
±3
0.5
5
3.0
1.0
±8
1.0
10
1.0
3.5
%
%
%
Hz
KHz
V
V
64
3.6
70
66
2
-350
35
72
4.2
0.2
94
80
5
-1000
100
0.4
60
3.6
70
66
2
-350
35
72
4.2
0.2
94
80
PWM Comparator Section (Note 4)
45
49
0%
%
Digital Ports (SYNC, SHUTDOWN, and RESET)
HIGH Output Voltage
LOW Output Voltage
HIGH Input Current
LOW Input Current
2.4
4
0.2
-125
-225
0.4
-300
-500
Sense Voltage
Input Bias Current
80
100
-3
120
-10
Soft-Start Section
0.4
200
50
0.1
100
0.4
200
V
µA
Output Drivers (each output) (Note 7)
0.3
2
150
0.6
0.2
12.5
12
13.5
13
0.2
1.2
50
0.3
0.1
0.3
2
150
0.6
0.2
V
V
V
V
µA
µs
µs
Power Consumption Section (Note 8)
SHUTDOWN = 0.4V
Standby Current
18
30
18
30
mA
Note 3. I
L = 0mA
Note 4. F
OSC
= 40KHz (R
T
= 4.12K
Ω ±1%, C
T
= .01
µF ±1%, R
D
= 0
Ω)
Note 5. V
CM = 0 to 5.2V
Note 6. V
CM = 0 to 12V
Note 7. V
C = 15V
Note 8. V
IN
= 35V
Note 9. These parameters, although guaranteed over the recom-
mended operating conditions, are not tested in production.


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