SG2543 查看數據表（PDF） - Microsemi Corporation
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SG2543 Datasheet PDF : 6 Pages
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APPLICATION INFORMATION (continued)
FIGURE 9 - TYPICAL APPLICATION CIRCUIT
SG1543/SG2543/SG3543
The values for the external components are
determined as follows:
Current
limit
input
threshold,
V
TH
≈10R00
1
CS is determined by the current loop dynamics
( ) Peak
current
to
load,
IP
≈
VTH
RSC
+
VO
RSC
R2
R2+R3
Short
circuit
current,
ISC
=
VTH
RSC
Low
output
voltage
limit,
VO
(Low)
2.5
=
(R4+R5+R6)
R5+R6
High
output
voltage
limit,
V
O
(High)
2.5
=
(R4+R5+R6)
R6
Voltage sensing delay, tD = 10,000 CD
V -5
SCR
trigger
power
limiting
resistor,
RG
>
IN
0.2
FIGURE 10 - SENSING MULTIPLE SUPPLY VOLTAGES
11/91 Rev 1.1 2/94
Copyright © 1994
FIGURE 11 - OVERCURRENT SHUTDOWN
5
LINFINITY Microelectronics Inc.
11861 Western Avenue ∞ Garden Grove, CA 92841
(714) 898-8121 ∞ FAX: (714) 893-2570
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