SG1526/SG2526/SG3526
ELECTRICAL CHARACTERISTICS
Parameter
Oscillator Section
(Note 4)
Initial Accuracy
Voltage Stability
Temperature Stability
(Note 9)
Minimum Frequency
(Note 9)
Maximum Frequency
Sawtooth Peak Voltage
Sawtooth Valley Voltage
Error Amplifier Section
(Note 5)
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
PWM Comparator Section
(Note 4)
Minimum Duty Cycle
Maximum Duty Cycle
(continued)
Test Conditions
T
J
= 25°C
V
IN
= 8 to 35V
Over Operating T
J
R
T
= 150KΩ, C
T
= 20µF
R
T
= 2KΩ, C
T
= 1.0nF
V
IN
= 35V
V
IN
= 8V
R
S
≤
2KΩ
R
L
≥
10MΩ, T
J
= 25°C
V
PIN1
- V
PIN2
≥
150mV, I
SOURCE
= 100µA
V
PIN2
- V
PIN1
≥
150mV, I
SINK
= 100µA
R
S
≤
2KΩ
V
IN
= 8V to 35V
V
COMPENSATION
= 0.4V
V
COMPENSATION
= 3.6V
SG1526/2526
SG3526
Units
Min. Typ. Max. Min. Typ. Max.
±3
0.5
7
350
0.5
3.0
1.0
3.5
0.5
±8
1.0
10
1.0
350
3.0
1.0
3.5
±3
0.5
5
±8
1.0
10
1.0
%
%
%
Hz
KHz
V
V
mV
nA
nA
dB
V
V
dB
dB
%
%
V
V
µA
µA
mV
µA
V
µA
V
V
V
V
µA
µs
µs
mA
64
3.6
70
66
2
5
-350 -1000
35 100
72
60
4.2
3.6
0.2 0.4
94
70
80
66
0
10
2
-350 -2000
35 200
72
4.2
0.2 0.4
94
80
0
45
2.4
49
4
0.2 0.4
-125 -300
-225 -500
100
-3
0.1
100
110
-10
0.4
200
45
2.4
49
4
0.2 0.4
-125 -300
-225 -500
100
-3
0.1
100
120
-10
0.4
200
Digital Ports (SYNC, SHUTDOWN, and RESET)
HIGH Output Voltage
I
SOURCE
= 40µA
LOW Output Voltage
I
SINK
= 3.6mA
V
IH
= 2.4V
HIGH Input Current
V
IL
= 0.4V
LOW Input Current
Current Limit Comparator Section
(Note 6)
R
S
≤
50Ω, T
J
= 25°C
Sense Voltage
Input Bias Current
Soft-Start Section
Error Clamp Voltage
RESET = 0.4V
C
S
Charging Current
RESET = 2.4V
Output Drivers (each output)
(Note 7)
HIGH Output Voltage
I
SOURCE
= 20mA
I
SOURCE
= 100mA
LOW Output Voltage
I
SINK
= 20mA
I
SINK
= 100mA
Collector Leakage
V
C
= 40V
Rise Time
C
L
= 1000pF
Fall Time
C
L
= 1000pF
Power Consumption Section
(Note 8)
Standby Current
SHUTDOWN = 0.4V
Note 3.
Note 4.
Note 5.
Note 6.
I
L
= 0mA
F
OSC
= 40KHz (R
T
= 4.12KΩ
±1%,
C
T
= .01µF
±1%,
R
D
= 0Ω)
V
CM
= 0 to 5.2V
V
CM
= 0 to 12V
90
80
50
50
12.5 13.5
12.5 13.5
12
13
12
13
0.2 0.3
0.2 0.3
2
1.2
2
1.2
50 150
50 150
0.3 0.6
0.3 0.6
0.1 0.2
0.1 0.2
18
30
18
30
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.
4/90 Rev 1.1 2/94
Copyright
©
1994
3
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
MICROSEMI [ MICROSEMI CORPORATION ]
