參數(shù)資料
型號(hào)： SG1526B
廠商： Microsemi Corporation
英文描述： REGULATING PULSE WIDTH MODULATOR
中文描述： 調(diào)控脈寬調(diào)制器
文件頁數(shù)： 3/9頁
文件大小： 209K
代理商： SG1526B
4/90 Rev 1.1 2/94
Copyright
1994
L
IN
F
IN
ITY
Microelectronics Inc.
11861 Western Avenue
∞
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
3
SG1526B/SG2526B/SG3526B
R
S
≤
50
mV
μ
A
ns
I
SOURCE
= 40
μ
A
I
SINK
V
IH
= 2.4V
V
= 0.4V
(Note9)
2.4
2.4
4
0.2
-125
-225
0.4
-200
-360
200
4
0.2
-125
-225
0.4
-200
-360
200
V
V
μ
A
μ
A
ns
Minimum Duty Cycle
Maximum Duty Cycle
Digital Ports (SYNC, SHUTDOWN, and RESET)
HIGH Output Voltage
LOW Output Voltage
HIGH Input Current
LOW Input Current
SHUTDOWN Delay to Output
Current Limit Comparator Section
(Note 6)
Sense Voltage
Input Bias Current
Delay to Output
(Note 9)
V
COMPENSATION
= 0.4V
V
COMPENSATION
= 3.6V
45
49
0
45
49
0
%
%
I
SOURCE
= 20mA
I
SOURCE
= 100mA
I
SINK
I
SINK
= 100mA
V
C
= 40V
C
L
= 1000pF
C
L
= 1000pF
HIGH Output Voltage
LOW Output Voltage
Collector Leakage
Rise Time
Fall Time
Power Consumption Section
(Note 8)
R
S
≤
2K
R
L
≥
10M
V
PIN1
- V
PIN2
≥
150mV, I
SOURCE
= 100
μ
A
V
PIN2
- V
PIN1
≥
150mV, I
SINK
μ
A
R
S
≤
2K
V
IN
= 8V to 35V
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)
Oscillator Section
(Note 4)
Initial Accuracy
Voltage Stability
Temperature Stability
(Note 9)
Minimum Frequency
(Note 9)
Maximum Frequency
Sawtooth Peak Voltage
Sawtooth Valley Voltage
SYNC Pulse Width
T
J
= 25
°
C
V
= 8 to 35V
Over Operating T
R
T
= 150K
, C
= 20
μ
F
R
T
= 2K
, C
T
= 470pF
V
IN
= 35V
V
IN
= 8V
R
L
= 2.0K
to V
REF
SG3526B
Test Conditions
Parameter
Units
RESET = 0.4V
RESET = 2.4V
Error Clamp Voltage
C
Charging Current
Output Drivers (each output)
(Note 7)
ELECTRICAL CHARACTERISTICS
(continued)
Soft-Start Section
Note 3. I
L
= 0mA
Note 4. F
OSC
= 40KHz (R
T
= 4.12K
±
1%, C
T
= .01
μ
F
±
1%, R
D
= 0
)
Note 5. V
CM
= 0 to 5.2V
Note 6. V
CM
= 0 to 12V
Note 7. V
C
= 15V
Note 8. V
= 35V
Note 9. These parameters, although guaranteed over the recom-
mended operating conditions, are not tested in production.
Standby Current
0.3
2
150
0.4
0.15
5
-1000
100
0.4
±
8
1.0
10
1.0
3.5
1.1
2
SG1526B/2526B
Min. Typ. Max. Min. Typ. Max.
0.4.
150
500
2.5
0.5
±
3
0.5
7
3.0
1.0
1.0
500
2.5
0.5
±
3
0.5
3
3.0
1.0
1.0
±
8
1.0
5
1.0
3.5
1.1
2
%
%
%
Hz
KHz
V
V
μ
s
64
3.6
70
66
2
-350
35
72
4.2
0.2
94
80
60
3.6
70
66
2
-350
35
72
4.2
0.2
94
80
10
-2000
200
0.4
mV
nA
nA
dB
V
V
dB
dB
120
-10
400
100
-3
80
110
-10
400
100
-3
90
50
0.1
100
50
0.1
100
0.4.
150
V
μ
A
V
V
V
V
μ
A
μ
s
μ
s
0.3
2
150
0.4
0.15
13.5
13
0.2
1.2
50
0.3
0.1
12.5
12
13.5
13
0.2
1.2
50
0.3
0.1
12.5
12
SHUTDOWN = 0.4V
18
30
18
30
mA
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