POWER SUPPLY SUPERVISORY CIRCUIT
Description
LAB
TOP VIEW
SCR TRIGGER REMOTE ACTIVATE RESET O.
V.
INDICATE O.
V.
DELAY O.
V.
INPUT U.
V.
INPUT U.
V.
DELAY
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
SEME
IP1543 SERIES
V IN VR E F GND C.
L.
OUTPUT OFFSET/COMP C.
L.
NON–INV.
INPUT C.
L.
INV.
INPUT U.
V.
INDICATE
POWER SUPPLY SUPERVISORY CIRCUIT
FEATURES
• 4.
5 to 40V operation over full temperature range • Reference voltage trimmed to 1% accuracy • Includes over–voltage, under–voltage and current sensing • Programmable time delays • SCR “Crowbar” drive of 300mA • Remote activation capability • Optional over–voltage latch capability
J Package – 16 Pin Ceramic DIP N Package – 16 Pin Plastic DIP D Package – 16 Pin Plastic (300) SOIC
Order Information
Part J–Pack N–Pack D–16 Temp.
Number 16 Pin 16 Pin 16 Pin Range IP1543 -55 to +125°C IP3543 0 to +70°C Note: To order, add the package identifier to the part number.
eg.
IP1543J IP3543D–16
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
+VIN Input Supply Voltage Sense Inputs SCR Trigger Current Indicator Output Voltage Indicator Output Sink Current PD PD TJ TSTG TL Power Dissipation Power Dissipation TA = 25°C Derate @ TA > 50°C TC = 25°C Derate @ TC > 25°C 40V VIN Internally Limited +40V 50mA 1W 10mW/°C 2W 16mW/°C See Ordering Information –65 to +150°C (soldering, 10 seconds) +300°C
Prelim.
1/96
Operating Junction Temperature Storage Temperature Range Lead Temperature
Semelab plc.
Telephone (01455) 556565.
Telex: 341927.
Fax (01455) 552612.
LAB
DESCRIPTION
The IP1543 and IP3543 power supply supervisory circuits contain all the functions necessary to monitor and control the output of a sophisticated power supply system.
Included on the chip are over-voltage (O.
V.
) sensing with externally programmable delay used to trigger an external SCR “Crowbar”, under-voltage (U.
V.
) sensing with externally programmable delay used to sense either the power supply output or the line input voltage, a third op-amp/comparator with provision for external compensation and/or of...
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