參數(shù)資料
型號(hào)： SG2846DW
廠商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類： 穩(wěn)壓器
英文描述： CURRENT MODE PWM CONTROLLER
中文描述： 0.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝： ROHS COMPLIANT, PLASTIC, SOIC-16
文件頁數(shù)： 3/10頁
文件大?。?/td> 210K
代理商： SG2846DW
SG1846
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
Collector Emitter Voltage
Collector Leakage Current
Output Low Level
Output High Level
Rise Time
(Note 4)
Fall Time
(Note 4)
Threshold Voltage
Input Voltage Range
Minimum Latching Current
(I
)
(Note 7)
Maximum Non-Latching Current
(I
)
(Note 8)
Delay to Outputs
(Note 4)
Output Section
T
J
= 25°C
250
0
3.0
350
1.5
1.5
300
400
V
IN
0.8
600
250
0
3.0
350
1.5
1.5
300
400
V
IN
0.8
600
mV
V
mA
mA
ns
V
C
= 40V
I
SINK
= 20mA
I
SINK
= 100mA
I
SOURCE
= 20mA
I
SOURCE
= 100mA
C
L
J
= 25°C
C
L
= 1nF, T
J
= 25°C
40
13
12
0.1
0.4
13.5
13.5
50
50
200
0.4
2.1
300
300
40
13
12
0.1
0.4
13.5
13.5
50
50
200
0.4
2.1
300
300
V
μA
V
V
V
V
ns
ns
Amplifier Gain
(Notes 5 & 6)
Maximum Differential
(Note 6)
Input Signal (V
- V
)
(Note 5)
Input Offset Voltage
(Note 5)
CMRR
PSRR
Input Bias Current
(Note 5)
Input Offset Current
(Note 5)
Input Common Mode Range
Delay to Outputs
(Note 4)
Current Limit Adjust Section
Current Limit Offset Voltage
(Note 5)
Input Bias Current
Shutdown Terminal Section
2.5
1.1
60
60
0
2.75
1.2
5
83
84
-2.5
0.08
200
3.0
25
-10
1
V
-3
500
2.5
1.1
60
60
0
2.75
1.2
5
83
84
-2.5
0.08
200
3.0
25
-10
1
V
-3
500
Input Offset Voltage
Input Bias Current
Input Offset Current
Common Mode Range
Open Loop Voltage Gain
Unity Gain Bandwidth
(Note 4)
CMRR
PSRR
Output Sink Current
Output Source Current
High Level Output Voltage
Low Level Output Voltage
Current Sense Amplifier Section
V
IN
= 8V to 40V
V
O
= 1.2V to 3V, V
CM
= 2V
T
J
= 25°C
V
CM
= 0V to 38V, V
IN
= 40V
V
IN
= 8V to 40V
V
ID
= - 15mV to -5V, V
PIN 7
= 1.2V
V
ID
= 15mV to 5V, V
PIN 7
R
L
= 15K
(Pin 7)
R
L
= 15K
(Pin 7)
0
80
0.7
75
80
2
-0.4
4.3
0.5
-0.6
40
105
1.0
100
105
6
-0.5
4.6
0.7
5
-1
250
V
IN
-2V
1
0.5
-0.6
40
105
1.0
100
105
6
-0.5
4.6
0.7
10
-2
250
V
IN
-2V
1
Error Amp Section
ELECTRICAL CHARACTERISTICS
(continued)
Min. Typ. Max. Min. Typ. Max.
SG1846
SG2846
Parameter
Test Conditions
Units
SG3846
39
3.9
3.9
Initial Accuracy
Voltage Stability
Temperature Stability
(Note 4)
Sync Output High Level
Sync Output Low Level
Sync Input High Level
Sync Input Low Level
Sync Input Current
T
J
= 25
°
C
V
= 8V to 40V
Over Operating Range
Pin 8 = 0V
Pin 8 = 0V
Sync Voltage = 5.25V, Pin 8 = 0V
43
1
1
4.35
2.3
1.2
47
2
2.5
2.5
1.5
39
3.9
3.9
43
1
1
4.35
2.3
1.2
47
2
2.5
2.5
1.5
KHz
%
%
V
V
V
V
mA
Oscillator Section
(Note 9)
mV
μA
nA
V
dB
MHz
dB
dB
mA
mA
V
V
0
80
0.7
75
80
2
-0.4
4.3
V
= 0V, Pin 1 Open
Pin 1 Open R
L
= 15K
(Pin 7)
V
PIN 1
= 0.5V, Pin 7 Open
V
CM
= 1V to 12V
V
IN
= 8V to 40V
V
PIN 1
= 0.5V, Pin 7 Open
V
PIN 1
= 0.5V, Pin 7 Open
T
J
= 25°C
V
V
mV
dB
dB
μA
μA
V
ns
0.55
-30
0.5
-10
0.55
-30
0.45
0.5
-10
0.45
V
PIN 3
= 0, V
= 0V, Pin 7 Open
V
PIN 5
= V
REF
, V
PIN 6
= 0V
V
μA
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