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| 型號(hào)： | SG2540DW |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | OFF-LINE START-UP CONTROLLER |
| 中文描述： | 0.2 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | ROHS COMPLIANT, PLASTIC, SOIC-16 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 78K |
| 代理商： | SG2540DW |
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
SG1540/SG2540/SG3540
ELECTRICAL CHARACTERISTICS
(continued)
Note 3. F
= 50KHz, R
= 3.48K C
= 4.7nF unless otherwise specified.
Note 4. These parameters, although guaranteed, are not tested in production.
SG1540/2540/3540
Min.
Typ. Max.
Parameter
Units
Test Conditions
T
J
= 25°C
+V
IN
= 12 to 18V
R
T
= 17.8K, C
= .068μF
R
T
= 1.5K, C
T
= 470pF
46
400
50
5
2
54
12
5
1
KHz
%
%
KHz
KHz
Initial Accuracy
Voltage Stability
Temperature Stability
(Note 4)
Oscillator Minimum Frequency
Oscillator Maximum Frequency
AC Output Section
HIGH Output Voltage
I
SOURCE
= 20mA
I
SOURCE
= 100mA
I
SINK
I
SINK
= 100mA
C
L
= 1000pF
C
L
= 1000pF
0.3
2.0
55
0.6
0.2
Overvoltage Threshold
Overvoltage Bias Current
Overvoltage Clamp Voltage
+V
Overvoltage Threshold
SCR ON Voltage
SCR Holding Current
2.50
0.1
7
42
9
0.35
2.63
1
8
44
12
0.55
V
μA
V
V
V
mA
CHARACTERISTIC CURVES
Overvoltage Crowbar Section
FIGURE 2 - OSCILLATOR FREQUENCY VS. R
T
AND C
T
FIGURE 1 - SATURATION VOLTAGE (DC OUT PIN) VS. OUTPUT CURRENT
Oscillator Section
(Note 3)
V
V
V
V
%
μS
μS
13.5
13.0
0.2
1.2
50
0.3
0.1
12.5
12.0
45
LOW Output Voltage
Squarewave Duty Cycle
AC Output Risetime
AC Output Falltime
2.37
6
37
0.15
V
O.V.
= 0 to 2.37V
I
O.V.
= 1mA
I
VIN
= 35mA
V
O.V.
= 0
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| SG2540M | OFF-LINE START-UP CONTROLLER |
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| SG2540M | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:OFF-LINE START-UP CONTROLLER |
| SG2540Y | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:OFF-LINE START-UP CONTROLLER |
| SG2543 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT |
| SG2543DW | 制造商:Microsemi Corporation 功能描述:SG2543DW - Bulk |
| SG2543J | 制造商:Microsemi Corporation 功能描述:SG2543J - Bulk |
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