LMS1585 Datasheet | National Semiconductor

Description The LMS1585A and LMS1587 are low dropout positive regulators with output load current of 5A and 3A respectively. Their low dropout voltage (1.2V) and fast transient response make them an excellent solution for low voltage microprocessor applications. The LMS1585A/87 are available in adjustable versions, which can set the output voltage with only two external resistors. In addition, they are also available in a 3.3V fixed voltage version (Note 9). The LMS1585A/87 circuits include a zener trimmed bandgap reference, current limiting and thermal shutdown. The LMS1585A/87 series are available in TO-220 and TO263 packages. Features n n n n n n n n Fast transient response Available in Adjustable, 1.5V, and 3.3V versions Current limiting and thermal protection mercial temp. range 0˚C to 125˚C Industrial temp. range - 40˚C to 125˚C Line regulation 0.005% (typical) Load regulation 0.05% (typical) Direct replacement for LT™1585A/87 Applications n n n n Pentium™ processor supplies Power PC™ supplies Other 2.5V to 3.6V microprocessor supplies Low voltage logic supplies Typical Application DS101197-1 Connection Diagrams TO-220 TO-263 DS101197-36 Top View DS101197-35 Top View LT is a registered trademark of Linear Technology Corporation Pentium is a registered trademark of Intel Corporation Power PC is a registred trademark of IBM © 2000 National Semiconductor Corporation DS101197 .national. LMS1585A/LMS1587 Ordering Information Output Current 3A Package TO-263 Temperature Range 0˚C to 125˚C Part Number LMS1587CS-ADJ LMS1587CSX-ADJ LMS1587CS-1.5 LMS1587CSX-1.5 LMS1587CS-3.3 LMS1587CSX-3.3 - 40˚C to 125˚C LMS1587IS-ADJ LMS1587ISX-ADJ LMS1587IS-3.3 LMS1587ISX-3.3 TO-220 0˚C to 125˚C - 40˚C to 125˚C 5A TO-263 0˚C to 125˚C LMS1587CT-ADJ LMS1587CT-3.3 LMS1587IT-ADJ LMS1587IT-3.3 LMS1585ACS-ADJ LMS1585ACSX-ADJ LMS1585ACS-3.3 LMS1585ACSX-3.3 - 40˚C to 125˚C LMS1585AIS-ADJ LMS1585AISX-ADJ LMS1585AIS-3.3 LMS1585AISX-3.3 TO-220 0˚C to 125˚C - 40˚C to 125˚C LMS1585ACT-ADJ...