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, TO-263, TO-263 center cut and TO-252
packages
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 mini-
mum 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 capabili-
ties for GTL+ bus V
TT
termination.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limit-
ing provides protection against any combination of overload
and ambient temperature that would create excessive junc-
tion temperatures.
The RC1585 series regulators are available in the industry-
standard TO-220, TO-263, TO-263 center cut and TO-252
power packages.
Applications
• Pentium
®
class GTL+ bus supply
• Low voltage logic supply
• Post regulator for switching supply
Typical Applications
RC1585
V
IN
V
OUT
+
ADJ
124Ω
+
V
IN = 3.3V
10µF
1.5V at 5A
22µF
24.9Ω
V
IN = 3.3V
+
10µF
RC1585-1.5
V
IN
V
OUT
GND
+
1.5V at 5A
22µF
65-1585-01a
Pentium is a registered trademark of Intel Corporation.
REV. 1.1.2 1/12/01
ETC [ ETC ]
