KA78RL00

www.fairchildsemi.com KA78RL00 Adjustable Micro Power Voltage Regulator Features Low Quiescent Current Low Dropout Voltage Low Temperature Coefficient Tight Line and Load Regulation Guaranteed 100mA Output Current Internal Short Current & Thermal Limit Error Signals of Output Dropout (8 pin Versions Only) External Shut-down ( 8 pin Versions Only) Description The KA78RLOO is an adjustable micro power voltage regulator suitable for use in battery-powered systems. This regulator has various functions such as alarm which warns of a low output voltage, often due to falling batteries on the input, the external shutdown which enables the regulator to be switched on and off, current and temperature limiting. 8-SOP 1 Internal Block Diagram OUT(1) INPUT(8) + PROGRAM (2) ERROR AMPLIFIER + FEEDBACK(7) C1 SHUTDOWN(3) + OFFSE TAP(6) FROM EXTERNAL INPUT SCP ERROR ERROR COMPARATOR COMPARATO + T 1.25V + R REFERENCE TO EXTERNAL INPUT GROUND(4) ERROR(5) Rev. 1.0.0 ©2001 Fairchild Semiconductor Corporation KA78RL00 Absolute Maximum Ratings Parameter Input Supply Voltage Power Dissipation Thermal Resistance Junction-Air Storage Temperature Range Operating Junction Temperature Range Symbol VIN PD RθJA TSTG TOPR Value -0.3 ~ +30 Internally Limited 127.5 -65 ~ +150 -40 ~ +125 Unit V W °C/W °C °C 2 KA78RL00 Electrical Characteristics (Refer to the test circuit, Ta = 25 °C, unless otherwise specified ) Parameter ALL VOLTAGE OPTIONS Output Voltage Temperatur...