ELECTRICAL CHARACTERISTICS
Parameter
(continued)
Test Conditions
SG1525A/2525A
SG3525A
SG1527A/2527A
SG3527A
Units
Min. Typ. Max. Min. Typ. Max.
37.6
40 42.4 37.6
±0.3 ±1
±6
±3
150
350
350
1.7 2.0 2.2 1.7
3.0 3.5
3.0
0.3 0.5 1.0 0.3
1.2 2.0 2.8 1.2
1.0 2.5
0.5
1
60
1
3.8
60
50
75
2
0.2
5.6
75
60
5
10
1
60
1
0.5
3.8
60
50
0
45
0.6
49
0.9
3.3
.05
50
0.4
0.4
19
18
0.2
1.0
7
100
50
0.2
14
45
0.6
3.6
2.0
80
0.6
1.0
25
49
0.9
3.3
.05
50
0.4
0.4
19
18
0.2
1.0
7
100
50
0.2
14
40
±1
±3
42.4
±2
±6
150
2.2
1.0
2.8
2.5
10
10
1
KHz
%
%
Hz
KHz
mA
V
µs
V
mA
mV
µA
µA
dB
MHz
V
V
dB
dB
%
%
V
V
µA
µA
V
mA
V
V
V
V
V
µA
ns
ns
µs
mA
Oscillator Section
(Note 4)
Initial Accuracy
T
J
= 25°C
Voltage Stability
V
IN
= 8V to 35V
Temperature Stability
(Note 3)
MIN
≤
T
J
≤
MAX
R
T
= 150KΩ, C
T
= 0.1µF
Minimum Frequency
(Note 3)
Maximum Frequency
(Note 3)
R
T
= 2KΩ, C
T
= 1nF
I
RT
= 2mA
Current Mirror
Clock Amplitude
Clock Width
T
J
= 25°C
Sync Threshold
Sync Voltage = 3.5V
Sync Input Current
Error Amplifier Section
(V
CM
= 5.1V)
Input Offset Voltage
Input Bias Current
Input Offset Current
DC Open Loop Gain
R
L
≥10MΩ,
T
J
= 25°C
Gain-Bandwidth Product
(Note 3)
A
V
= 0dB, T
J
= 25°C
Output Low Level
Output High Level
V
CM
= 1.5V to 5.2V
Common Mode Rejection
V
IN
= 8V to 35V
Supply Voltage Rejection
P.W.M. Comparator Section
(Note 4)
V
COMP
= 0.6V
Minimum Duty Cycle
Maximum Duty Cycle
V
COMP
= 3.6V
Input Threshold
(Note 4)
Zero Duty Cycle
Maximum Duty Cycle
Input Bias Current
Soft-Start Section
Soft Start Current
V
SHUTDOWN
= 0V
Soft Start Voltage
V
SHUTDOWN
= 2V
V
SHUTDOWN
= 2.5V
Shutdown Input Current
Output Drivers Section
(each transistor, V
C
= 20V)
Output High Level
I
SOURCE
= 20mA
I
SOURCE
= 100mA
Output Low Level
I
SINK
= 20mA
I
SINK
= 100mA
V
COMP
and V
SS
= High
Undervoltage Lockout
Collector Leakage
(Note 5)
V
C
= 35V
Rise Time
C
L
= 1nF, T
J
= 25°C
Fall Time
C
L
= 1nF, T
J
= 25°C
Shutdown Delay
(Note 3)
V
SD
= 3V, C
S
= 0, T
J
= 25°C
Total Standby Current
Standby Current
V
IN
= 35V
2.0
3.5
0.5
2.0
1.0
2
1
75
2
0.2
5.6
75
60
0.5
0
3.6
2.0
80
0.6
1.0
25
18
17
18
17
0.4
2.2
8
200
600
300
0.5
20
6
6
0.4
2.2
8
200
600
300
0.5
20
Rev 1.4a
Copyright
©
1996
3
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∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
MICROSEMI [ MICROSEMI CORPORATION ]
