參數(shù)資料
型號: TOP232G
英文描述: Analog IC
中文描述: 模擬IC
文件頁數(shù): 12/36頁
文件大?。?/td> 650K
代理商: TOP232G
TOP232-234
12
B
7/01
Figure 15. Line Sensing for Under-Voltage Only (Overvoltage
Disabled).
PI-2510-040401
DC
Input
Voltage
+
-
D
M
S
C
V
UV
= R
LS
x I
UV
For Value Shown
V
UV
= 100 VDC
R
LS
6.2 V
2 M
22 k
CONTROL
Figure 16. Line Sensing for Overvoltage Only (Under-Voltage
Disabled).
Figure 17. Externally Set Current Limit.
PI-2517-040401
DC
Input
Voltage
+
-
D
M
S
C
For R
IL
= 12 k
I
LIMIT
= 67%
CONTROL
R
IL
See graph for other
resistor values (R
IL
)
For R
IL
= 25 k
I
LIMIT
= 40%
PI-2516-040401
DC
Input
Voltage
+
-
D
M
S
C
V
OV
= I
OV
x
R
LS
For Values Shown
V
OV
= 450 VDC
CONTROL
R
LS
IN4148
2 M
30 k
Figure 13. Three Terminal Operation (MULTI-FUNCTION
Features Disabled. FREQUENCY Pin Tied to SOURCE
or CONTROL Pin).
Figure 14. Line Sensing for Under-Voltage, Overvoltage and
Maximum Duty Cycle Reduction.
PI-2508-081199
DC
Input
Voltage
+
-
D
S
C
CONTROL
M
PI-2509-040401
DC
Input
Voltage
+
-
D
M
S
C
V
UV
= I
UV
x R
LS
V
OV
=
I
OV
x
R
LS
For R
LS
= 2 M
V
UV
= 100 VDC
V
OV
=
450 VDC
DC
MAX
@100 VDC = 78%
DC
MAX
@375 VDC = 47%
CONTROL
R
LS
2 M
Typical Uses of MULTI-FUNCTION (M) Pin
Figure 18. Current Limit Reduction with Line Voltage.
PI-2518-040401
DC
Input
Voltage
+
-
D
M
S
C
CONTROL
R
IL
R
LS
2.5 M
6 k
90% @ 100 VDC
55% @ 300 VDC
I
LIMIT
=
I
LIMIT
=
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