LMC2626 Datasheet | National Semiconductor

Description The LMC2626 integrated circuit is specifically developed for a row inversion TFT FPD system architecture It is designed only to be used in conjunction with National’s LM2625 switching regulator chip Built on National’s advanced CMOS CS80 process this chip generates a high-power precision square-wave from a digital sync signal The chip also contains thermal shutdown circuitry system shutdown circuitry and a low drop-out voltage regulator to generate a 4 2 volt supply from an externally applied reference voltage of 1 227V Features Y Y Y Y Y Y Y Y Y Used in conjunction with LM2625 chip High output current buffer Low buffer on resistance System shutdown control LDO voltage regulator LDOR dropout 0 3V maximum at 150 m A Thermal shutdown short circuit protection External reference required for LDOR VREF pin converts to a digital pin to shutdown LM2625 Connection Diagram 8-Pin SO Pin Description Pin 1 2 3 4 5 6 7 8 Pin Name VREF SD SYNC GND P5V VOUT VIN VSH Description 1 218V to 1 242V Ext Reference from LM2625 (see Note 8) System Shutdown input pin for LMC2626 and LMC2625 Digital input square wave from FPD controller Ground Precision Regulated a 5V Supply Power Buffer Output FPD System Supply ( a 4 5V to a 5 5V) Low Drop-Out Voltage Regulator Output TL H 12541 - 1 Top View Ordering Information Package 8-Pin SO Temperature Range b 40 C to a 85 C LMC2626IM NSC Drawing M08A Transport Media Rail Tape and Reel C1996 National Semiconductor Corporation TL H 12541 RRD-B30M26 Printed in U S A Absolute Maximum Ratings (Note 1) ESD Tolerance 2 k V HBM 200V MM (Note 4) Sync Input Voltage Supply Voltage (VIN P5V) Continuous Total Power Dissipation (Note 1) Lead Temperature (less than 10 sec) 260 C b 65 C to a 150 C Storage Temperature Range Junction Temperature 150 C P5V 6 3V Operating Ratings (Note 1) VIN Supply Voltage P5V Supply Voltage (Note 5) Junction Temperature Range Ambient Temperature Range 4 5V s VIN s 5 5V 4 8V s P5V s 5 2V b 25 C to a 125 C b 40...