LMS1585A/LMS1587 5A Low Dropout Fast Response Regulators
April 2000
LMS1585A/LMS1587 5A and 3A Low Dropout Fast Respon...
LMS1585A/LMS1587 5A Low Dropout Fast Response Regulators
April 2000
LMS1585A/LMS1587 5A and 3A Low Dropout Fast Response Regulators
General 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 Commercial 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 PowerPC™ 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
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