SG1543/SG2543/SG3543

11/91 Rev 1.1 2/94

Copyright

© 1994

11861 Western Avenue

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∞ Garden Grove, CA 92841

4

(714) 898-8121

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FIGURE 3.

COMPARATOR INPUT HYSTERESIS

FIGURE 4.

CURRENT LIMIT INPUT THRESHOLD

FIGURE 5.

CURRENT LIMIT AMPLIFIER GAIN

FIGURE 6.

CURRENT LIMIT AMPLIFIER FREQUENCY RESPONSE

FIGURE 7 - SURGE LIMIT CIRCUIT FOR LARGE DELAY CAPACITORS

FIGURE 8 - INPUT LINE MONITOR

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.

APPLICATION INFORMATION