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UC1544 Scheda tecnica(PDF) 5 Page - Texas Instruments

Il numero della parte UC1544
Spiegazioni elettronici  Power Supply Supervisory Circuit
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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UC1544 Scheda tecnica(HTML) 5 Page - Texas Instruments

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UNITRODE CORPORATION
7 CONTINENTAL BLVD.
• MERRIMACK, NH 03054
TEL. (603) 424-2410
• FAX 603-424-3460
UC1543
UC1544
UC2543
UC2544
UC3543
UC3544
Overcurrent Shutdown
Input Line Monitor
APPLICATIONS (Pin numbers given for UC1543 series devices)
Typical Application
Sensing Multiple Supply Voltages
The values for the external components are determined
as follows:
Current limit input threshold, VTH =
1000
R1
C
S
is determined by the current loop dynamics
Peak current to load, IP
VTH
RSC
+
VO
RSC
R 2
R2
+ R 3
Short Circuit Current, ISC =
VTH
RSC
Low output voltage limit, VO (Low) =
2.5
(R4 + R5 + R6)
R5
+ R6
High output voltage limit, VO (High) =
2.5
(R4 + R5 + R6)
R6
Voltage sensing delay, tD = 10,000Cd
SCR trigger power limiting resistor, RG >
VIN
− 5
0.2
5


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