MIC5204

MIC5204 Micrel MIC5204 SCSI-II Active Terminator Preliminary Information General Description The MIC5204 is an active terminator designed to comply with SCSI-II specifications. The MIC5204 is enabled by a CMOS or TTL compatible logic signal. When disabled, power consumption drops nearly to zero and the output goes into a high impedance state. Key MIC5204 features include protection against reversed battery, current limiting, and overtemperature shutdown. Features ± 1% output voltage accuracy Guaranteed 500mA output Low quiescent current Low dropout voltage Extremely tight load and line regulation Very low temperature coefficient Current and thermal limiting Zero off-mode current Logic-controlled electronic shutdown Available in SO-8 and SOT-223 packages 2 Applications SCSI-II active terminator Desktop, laptop, notebook, and palmtop computers Intelligent instrumentation Printers Disk drives Voltage reference Ordering Information Part Number Junction Temp. Range Package MIC5204BM MIC5204BS –40°C to +125°C –40°C to +125°C SO-8 SOT-223 Pin Configuration VOUT VOUT NC GROUND MIC5204BM VIN VIN NC ENABLE Typical Application 110Ω 110Ω 110Ω Both VIN and both VOUT pins must be tied together. ENABLE must be pulled high for operation. TAB IS GROUND +5V + 10µF MIC5204 + 22µF 110Ω SCSI Bus 18 to 27 Lines 1 2 3 IN GND OUT MIC5204-xxBS February 1999 59 MIC5204 MIC5204 Micrel Absolute Maximum Ratings (Note 1) Input Voltage (VIN) .................