Fairchild Fan1582 Data Handbook
Summary
The FAN1582 series is an ultra-low dropout linear regulator designed for sophisticated, power-sensitive electronics. This device provides stable voltage outputs up to 3A while minimizing power dissipation, featuring remote sensing and on-chip thermal limiting. The comprehensive manual details its electrical specifications across adjustable and fixed voltages (e.g., 1.5V or 2.5V), covering required applications like powering advanced microprocessors, logic ICs, and complex embedded systems in low-voltage environments.
Page 1 Text Content
www.fairchildsemi.com
FAN1582 3A Adjustable/Fixed Ultra Low Dropout Linear Regulator
Features Description The FAN1582, FAN1582-1.5, and FAN1582-2.5 are ultra-low
Ultra Low dropout voltage, 0.4V typical at 3A
dropout regulators with 3A output current capability. These
Remote sense operation
devices have been optimized for low voltage applications
Fast transient response
including V TT bus termination, where transient response and
Load regulation: 0.05% typical
minimum input voltage are critical. The FAN1582 is ideal
0.5% initial accuracy
for low voltage microprocessor applications requiring a reg-
On-chip thermal limiting
ulated output from 1.3V to 5.7V with a power input supply
5-Pin SPAK, TO-252 DPAK, and TO-263 packages
of 1.75V to 6.5V. The FAN1582-1.5 offers fixed 1.5V with
3A current capabilities for GTL+ bus V TT termination. The
Applications
FAN1582-2.5 offers fixed 2.5V with 3A current capability Pentium Processors for logic IC operation and processors while minimizing the Power PC , AMD K5 and K6 processors overall power dissipation.
Pentium support of GTL+ bus supply
Low voltage logic supply Current limit ensures controlled short-circuit current. On-chip Embedded Processor supplies thermal limiting provides protection against any combination Split plane regulator of overload and ambient temperature that would create exces- New 2.5V and 1.8V Logic Families sive junction temperatures.
The FAN1582 series regulators are available in the 5-Pin SPAK, TO-252 DPAK, and TO-263 power packages.
Typical Applications
VIN = 3.3V VIN VSENSE
FAN1582–2.5
VOUT 2.5V at 3A
VIN = 3.3V VIN VSENSE VCNTL = 5V VCNTL
FAN1582 VOUT 2.1V at 3A VCNTL = 5V VCNTL
VIN = 5.75V VIN VSENSE
86.6Ω FAN1582 VOUT 5V at 3A VCNTL = 12V VCNTL
Pentium is a registered trademark of Intel Corporation. Power PC is a trademark of IBM Corporation.
REV. 1.1.2 2/26/03
Page Summary Contents For Fairchild Fan1582 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 12 |
| File Size | 393.24 KB |
| Published | July 06, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What packages are available for the FAN1582 regulator series?
The regulators come in 5-Pin SPAK, TO-252 DPAK, and TO-263 power packages.
What is the typical dropout voltage of this ultra-low regulator?
It offers an ultra-low dropout voltage, typically 0.4V at a maximum output current of 3A.
How does remote sensing improve accuracy in circuit design?
Use the VSense pin connected to the load for true remote sensing and to avoid trace voltage drops.
What protection mechanisms are built into the regulator?
It features on-chip thermal limiting against excessive junction temperatures, along with current limit controls.