![](http://datasheet.mmic.net.cn/280000/FAN5201_datasheet_16048968/FAN5201_32.png)
P
PRELIMINARY SPECIFICATION
limited characterization. In the process of final production release, specifications may change. Contact Fairchild Semiconductor for current information.
describes products that are not in full production at time of printing. Specifications are based on design goals and
www.fairchildsemi.com
Rev. 0.8.0
Pentium is a registered trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation.
Features
Ultra Low dropout voltage, 0.4V typical at 3A
Remote sense operation
Fast transient response
Load regulation: 0.05% typical
0.5% initial accuracy
On-chip thermal limiting
5 Pin standard TO-220 and TO-263 packages
Applications
Pentium
PowerPC
Pentium support of GTL+ bus supply
Low voltage logic supply
Embedded Processor supplies
Split plane regulator
New 2.5V and 1.8V Logic Families
Processors
, AMD K5 and K6 processors
Description
The FAN1582, FAN1582-1.5, and FAN1582-2.5 are ultra-low
dropout regulators with 3A 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 FAN1582 is ideal
for low voltage microprocessor applications requiring a reg-
ulated output from 1.3V to 5.7V with a power input supply
of 1.75V to 6.5V. The FAN1582-1.5 offers fixed 1.5V with
3A current capabilities for GTL+ bus V
FAN1582-2.5 offers fixed 2.5V with 3A current capability
for logic IC operation and processors while minimizing the
overall power dissipation.
TT
termination. The
Current limit ensures controlled short-circuit current. On-chip
thermal limiting provides protection against any combination
of overload and ambient temperature that would create exces-
sive junction temperatures.
The FAN1582 series regulators are available in the industry-
standard 5-Pin TO-220 and TO-263 power packages.
Typical Applications
22
μ
F
V
CNTL
= 5V
2.1V at 3A
10
μ
F
V
IN
= 3.3V
+
+
V
IN
V
SENSE
V
CNTL
Adj
V
OUT
FAN1582
22
μ
F
V
CNTL
= 3.3V
2.5V at 3A
10
μ
F
V
IN
= 3.0V
+
1
μ
F
+
+
V
IN
V
SENSE
V
CNTL
GND
V
OUT
FAN1582–2.5
86.6
124
22
μ
F
V
CNTL
= 12V
5V at 3A
10
μ
F
V
IN
= 5.75V
+
+
V
IN
V
SENSE
V
CNTL
Adj
V
OUT
FAN1582
374
124
FAN1582
3A Adjustable/Fixed Ultra Low Dropout
Linear Regulator