LIN D
O C
#:
8582
LX8582A-xx
8 . 5 A L
O W
D
R O P O U T
P
O S I T I V E
R
E G U L AT O R S
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O VA T I O N
P
R O D U C T I O N
D
A T A
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
廬
6x86
TM
& 6x86L
TM
, Pentium
廬
Processor and Power PC
TM
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.
K E Y F E AT U R E S
s
THREE-TERMINAL AJUSTABLE OR FIXED
OUTPUT
s
GUARANTEED
鈮?/div>
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
s
s
s
s
s
s
CYRIX 6x86 & 6x86L APPLICATIONS
PENTIUM PROCESSOR SUPPLIES
POWER PC SUPPLIES
MICROPROCESSOR SUPPLIES
LOW VOLTAGE LOGIC SUPPLIES
POST REGULATOR FOR SWITCHING SUPPLY
LXE9001 EVALUATION BOARD FOR
PENTIUM APPLICATIONS AVAILABLE.
CONSULT FACTORY.
PRODUCT HIGHLIGHT
C
Y R I X
6
X
8 6 V
O LTA G E
S
U P P LY
3.38V, 8.5A R
E G U L AT O R
V
IN
4.75V
1500碌F
6.3V
6MV1500GX
from Sanyo
IN
LX8582A
ADJ
OUT
V
REF
R1
121
1%
R2
205
1%
3.38V at 8.5A
2x 330碌F, 6.3V
Oscon SA type
from Sanyo
-or-
4x 1500碌F, 6.3V
6MV1500GX
from Sanyo
A
VA I L A B L E
O
P T I O N S
Part #
LX8582A-00
LX8582A-33
PER
P
AR T
#
Output
Voltage
Adjustable
3.3V
I
ADJ
= 50碌A
V
OUT
= V
REF
1 +
R2
R1
+ I
ADJ
R2
Other voltage options may be available 鈥?/div>
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.
PA C K A G E O R D E R I N F O R M AT I O N
T
A
(擄C)
0 to 125
Dropout
Voltage
1.3V
P
Plastic TO-220
3-pin
LX8582A-xxCP
V
Plastic TO-247
3-terminal
LX8582A-xxCV
"xx" refers to output voltage, please see table above.
F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
Copyright 漏 1997
Rev. 1.1 1/97
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841
1
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