IP1543 Datasheet | Seme LAB

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 300m A - 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 50m A 1W 10m W/°C 2W 16m W/°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. 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/parator with provision for external pensation and/or offset programming used for either current limiting or as an additional voltage monitor, and a voltage reference trimmed to ±1%. SEME IP1543 SERIES BLOCK DIAGRAM 250 µA 9 7 U.V. INDICATE U.V. SENSE U.V. U.V. DELAY VREF V IN 2.5 V REF. GND O.V. SENSE 250...