SG2543 Microsemi Corporation, SG2543 Datasheet
SG2543
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SG2543 Summary of contents
Page 1
... The reference generator circuit is internally trimmed to eliminate the need for external potentiometers and the entire circuit may be powered directly from either the output being monitored or from a separate bias voltage. BLOCK DIAGRAM 11/91 Rev 1.1 2/94 Copyright 1994 SG1543/SG2543/SG3543 FEATURES Over-voltage, under-voltage, and current sensing circuits all included Reference voltage trimmed to 1% accuracy SCR " ...
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... The numbers are meant guidelines for the thermal performance of the device/pc- board system. All of the above assume no ambient airflow. ..................................... (Note 4) T 125 C, SG2543 with A SG1543/2543 SG3543 Min. Typ. Max. Min. Typ. Max. 4.5 40 4.5 4 ...
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... OFFSET/COMP pin to Gnd 12V 15V CM IN OFFSET/COMP pin open 10mA 40V IND A = 0dB 100mV OVERDRIVE J 3 SG1543/SG2543/SG3543 SG1543/2543 SG3543 Min. Typ. Max. Min. Typ. Max. 2.45 2.50 2.55 2.40 2.50 2.40 2.60 2. 0.3 1.0 0.3 0.2 0.5 0 200 250 300 200 250 ...
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... The 100 ohm resistor limits the peak discharge current into the SG1543 while the external PNP transistor provides a high peak- current discharge path for the delay capacitor. 11/91 Rev 1.1 2/94 Copyright 1994 SG1543/SG2543/SG3543 FIGURE 4. CURRENT LIMIT INPUT THRESHOLD FIGURE 6. CURRENT LIMIT AMPLIFIER FREQUENCY RESPONSE FIGURE 8 - INPUT LINE MONITOR ...
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... APPLICATION INFORMATION FIGURE 9 - TYPICAL APPLICATION CIRCUIT 11/91 Rev 1.1 2/94 Copyright 1994 (continued) FIGURE 10 - SENSING MULTIPLE SUPPLY VOLTAGES FIGURE 11 - OVERCURRENT SHUTDOWN 5 SG1543/SG2543/SG3543 The values for the external components are determined as follows: 1000 Current limit input threshold determined by the current loop dynamics ...
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... S.C.R. TRIGGER REMOTE ACTIVATE O.V. INDICATE O.V. DELAY O.V. INPUT U.V. INPUT U.V. DELAY - 125 C 1. N.C. - 125 C 2. SCR TRIGGER 3. REMOTE ACTIVATE 4. RESET 5. O.V. INDICATE 6. N.C. 7. O.V. DELAY 8. O.V. INPUT 9. U.V. INPUT 10. U.V. DELAY 6 SG1543/SG2543/SG3543 + REF RESET 3 14 GROUND 13 C.L. OUTPUT 4 O.V. DELAY OFFSET/COMP 5 12 C.L. N.I. INPUT O.V. INPUT ...