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FAN1587ADX View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
FAN1587ADX
Fairchild
Fairchild Semiconductor Fairchild
FAN1587ADX Datasheet PDF : 14 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
www.fairchildsemi.com
FAN1587A
3A Adjustable/Fixed Low Dropout Linear Regulator
Features
• Fast transient response
• Low dropout voltage at up to 3A
• 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
Applications
• Pentium® Class GTL+ bus supply
• Low voltage logic supply
• Post regulator for switching supply
• 12V to 5V linear regulator
• 3.3V to 1.5V linear regulator
Description
The FAN1587A, FAN1587A-1.5, and FAN1587A-3.3 are low
dropout three-terminal regulators with 3A output current capa-
bility. These devices have been optimized for low voltage
applications including VTT bus termination, where transient
response and minimum input voltage are critical. The
FAN1587A is ideal for low voltage microprocessor applica-
tions requiring a regulated output from 1.5V to 3.6V with an
input supply of 12V or less. The FAN1587A-1.5 offers fixed
1.5V with 3A current capability for GTL+ bus VTT termina-
tion. The FAN1587A-3.3 offers fixed 3.3V current capability
for logic IC operation.
Current limit is trimmed to ensure specified output current and
controlled short-circuit current. On-chip thermal limiting pro-
vides protection against any combination of overload and
ambient temperature that would create excessive junction
temperatures.
The FAN1587A, FAN1587A-1.5, and FAN1587A-3.3 are
available in the industry-standard TO-220, TO-263, TO-263
center cut, and TO-252 (DPAK) power packages.
Typical Applications
VIN = 12V
+
22µF
FAN1587A
VIN
VOUT
ADJ
VOUT = VREF (1+R2/R1)+IADJ*R2
VIN = 9V
+
22µF
FAN1587A-3.3
VIN
VOUT
GND
R1
124
R2
768
9V at 3A
+
22µF
3.3V at 3A
+
22µF
65-1587-16
Pentium is a registered trademark of Intel Corporation.
REV. 1.0.5 11/10/03
 

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