RC1585M Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – 5A Adjustable/Fixed Low Dropout Linear Regulator

www.fairchildsemi.com
RC1585
5A Adjustable/Fixed Low Dropout Linear Regulator
Features
• Fast transient response
• Low dropout voltage at up to 5A
• Load regulation: 0.05% typical
• Trimmed current limit
• On-chip thermal limiting
• Standard TO-220 and TO-263 packages
Applications
• Pentium^® Pro and Pentium II GTL+ bus supply
• Low voltage logic supply
• Battery-powered circuitry
• Post regulator for switching supply
Description
The RC1585 and RC1585-1.5 are low dropout three-terminal
regulators with 5A output current capability. These devices have been
optimized for low voltage applications including V_TT bus termination,
where transient response and minimum input voltage are critical. The
RC1585 is ideal for low voltage microprocessor applications requiring
a regulated output from 1.5V to 3.6V with an input supply of 5V or
less. The RC1585-1.5 offers fixed 1.5V with 5A current capabilities
for GTL+ bus V_TT termination.
Current limit is trimmed to ensure specified output current and
controlled short-circuit current. On-chip thermal limiting provides
protection against any combination of overload and ambient
temperature that would create excessive junction temperatures.
The RC1585 series regulators are available in the industry-standard
TO-220 and TO-263 power packages.
Typical Applications
V_IN = 3.3V
+
10µF
RC1585
V_IN
V_OUT
ADJ
124Ω
1.5V at 5A
+
22µF
V_IN = 3.3V
+
10µF
RC1585-1.5
V_IN
V_OUT
GND
24.9Ω
1.5V at 5A
+
22µF
Pentium is a registered trademark of Intel Corporation
1.0.2
Rev.