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Microsemi Corporation - 8.5A LOW DROPOUT POSITIVE REGULATORS

Numéro de référence LX8582A-00
Description 8.5A LOW DROPOUT POSITIVE REGULATORS
Fabricant Microsemi Corporation 
Logo Microsemi Corporation 





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LX8582A-00 fiche technique
T H E I N F I N I T E P O W E R O F I N N O VAT I O N
L I N D O C #: 8582
LX8582A-xx
8 . 5 A LO W DR O P O U T PO S I T I V E RE G U L AT O R S
PR O D U C T I O N D ATA S H E E T
DESCRIPTION
The LX8582A series ICs are low
dropout three-terminal positive regula-
tors with 8.5A rated output current.
Processor applications such as the
Cyrix® 6x86TM & 6x86LTM, Pentium®
Processor and Power PCTM applications
requiring fast transient response are
ideally suited for this product family.
The LX8582A series products are
guaranteed to have < 1.3V at 8.5A
and are ideal to provide well-regulated
outputs of 2.5V to 3.6V using a 5V
input supply in the adjustable version,
or an output of 3.3V using a 5V input
supply in the fixed version.
Current limit is trimmed above 8.6A
to ensure adequate output current and
controlled short-circuit current. On-
chip thermal limiting provides protec-
tion against any combination of
overload that would create excessive
junction temperatures.
The LX8582A series ICs are available
in both the through-hole versions of the
industry standard 3-pin TO-220 and TO-
247 power packages.
For use in VRE applications, the
LX1431 Programmable Reference in
conjunction with this family of regula-
tors offers precision output voltage.
See the LX1431 data sheet for informa-
tion on this product.
PRODUCT HIGHLIGHT
CYRIX 6X86 VOLTAGE S UPPLY
3 . 3 8 V, 8 . 5 A R E G U L AT O R
VIN 4.75V
1500µF
6.3V
6MV1500GX
from Sanyo
IN LX8582A OUT
ADJ
VREF
IADJ = 50µA
VOUT = VREF
1+
R2
R1
+ IADJ R2
R1
121
1%
R2
205
1%
3.38V at 8.5A
2x 330µF, 6.3V
Oscon SA type
from Sanyo
-or-
4x 1500µF, 6.3V
6MV1500GX
from Sanyo
KEY FEATURES
s THREE-TERMINAL AJUSTABLE OR FIXED
OUTPUT
s GUARANTEED 1.3V HEADROOM AT 8.5A
s OUTPUT CURRENT OF 8.5A
p FAST TRANSIENT RESPONSE
p 1% VOLTAGE REFERENCE INITIAL
ACCURACY
p OUTPUT SHORT CIRCUIT PROTECTION
p BUILT-IN THERMAL SHUTDOWN
s EVALUATION BOARD AVAILABLE:
REQUEST LXE9001 EVALUATION KIT
A P P L I C AT I O N S
s CYRIX 6x86 & 6x86L APPLICATIONS
s PENTIUM PROCESSOR SUPPLIES
s POWER PC SUPPLIES
s MICROPROCESSOR SUPPLIES
s LOW VOLTAGE LOGIC SUPPLIES
s POST REGULATOR FOR SWITCHING SUPPLY
s LXE9001 EVALUATION BOARD FOR
PENTIUM APPLICATIONS AVAILABLE.
CONSULT FACTORY.
AVAILABLE O PTIONS PER PAR T #
Part #
Output
Voltage
LX8582A-00
Adjustable
LX8582A-33
3.3V
Other voltage options may be available —
Please contact factory for details.
Application of the LX8582A for the Cyrix 6x86 processor family.
This circuit is designed to have less than 130mV dynamic response to a 8.5A load transient.
Copyright © 1997
Rev. 1.1 1/97
PACKAGE ORDER INFORMATION
TA (°C)
Dropout
Voltage
P
Plastic TO-220
3-pin
V
Plastic TO-247
3-terminal
0 to 125
1.3V
LX8582A-xxCP
LX8582A-xxCV
"xx" refers to output voltage, please see table above.
FOR FURTHER INFORMATION CALL (714) 898-8121
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841
1

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