LX8582A-33CV Microsemi Analog Mixed Signal Group, LX8582A-33CV Datasheet

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LX8582A-33CV

Manufacturer Part Number
LX8582A-33CV
Description
IC REG LDO POS 8.5A 3.3V TO247
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet

Specifications of LX8582A-33CV

Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 10V
Voltage - Dropout (typical)
1.1V @ 8.6A
Number Of Regulators
1
Current - Output
8.5A
Current - Limit (min)
8.6A
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-247
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
T
Copyright © 1997
Rev. 1.1
H E
V
IN
The LX8582A series ICs are low
dropout three-terminal positive regula-
tors with 8.5A rated output current.
Processor applications such as the
Cyrix
Processor and Power PC
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.
This circuit is designed to have less than 130mV dynamic response to a 8.5A load transient.
Current limit is trimmed above 8.6A
6MV1500GX
1/97
I
4.75V
from Sanyo
N F I N I T E
®
6x86
1500µF
6.3V
V
TM
OUT
Application of the LX8582A for the Cyrix 6x86 processor family.
& 6x86L
= V
P
REF
IN
O W E R
TM
1 +
P R O D U C T H I G H L I G H T
, Pentium
TM
C
3.38V, 8.5A R
Y R I X
applications
LX8582A
R2
R1
0 to 125
F O R F U R T H E R I N F O R M A T I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
T
D E S C R I P T I O N
A
O F
6
(°C)
®
+ I
ADJ
X
8 6 V
11861 W
ADJ
I
ADJ
I
P A C K A G E O R D E R I N F O R M A T I O N
N N O V A T I O N
R2
= 50µA
"xx" refers to output voltage, please see table above.
O LTA G E
OUT
Dropout
Voltage
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.
in both the through-hole versions of the
industry standard 3-pin TO-220 and TO-
247 power packages.
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.
E G U L AT O R
ESTERN
V
1.3V
The LX8582A series ICs are available
For use in VRE applications, the
REF
S
U P P LY
A
R1
121
1%
R2
205
1%
VENUE
P
LX8582A-xxCP
Plastic TO-220
3-pin
, G
ARDEN
8 . 5 A L
2x 330µF, 6.3V
Oscon SA type
from Sanyo
-or-
4x 1500µF, 6.3V
6MV1500GX
from Sanyo
3.38V at 8.5A
G
ROVE
P
R O D U C T I O N
O W
, CA. 92841
V
LX8582A-xxCV
Plastic TO-247
3-terminal
D
R O P O U T
A
p FAST TRANSIENT RESPONSE
p 1% VOLTAGE REFERENCE INITIAL
p OUTPUT SHORT CIRCUIT PROTECTION
p BUILT-IN THERMAL SHUTDOWN
VA I L A B L E
Other voltage options may be available —
Part #
LX8582A-00
LX8582A-33
THREE-TERMINAL AJUSTABLE OR FIXED
OUTPUT
GUARANTEED 1.3V HEADROOM AT 8.5A
OUTPUT CURRENT OF 8.5A
ACCURACY
EVALUATION BOARD AVAILABLE:
REQUEST LXE9001 EVALUATION KIT
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.
Please contact factory for details.
P
O S I T I V E
K E Y F E A T U R E S
A P P L I C A T I O N S
D
LX8582A-xx
A T A
O
P T I O N S P E R
LIN D
R
S
E G U L AT O R S
H E E T
Adjustable
O C
Voltage
Output
3.3V
#: 8582
P
A R T
1
#

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LX8582A-33CV Summary of contents

Page 1

... LX8582A IN 1500µF ADJ 6.3V 6MV1500GX from Sanyo OUT REF R1 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. T (° 125 11861 W Copyright © 1997 Rev. 1.1 1/ ensure adequate output current and controlled short-circuit current ...

Page 2

... LX8582A- Power Dissipation .................................................................................. Internally Limited Input Voltage ................................................................................................................ 10V Input to Output Voltage Differential ........................................................................... 10V Operating Junction Temperature Plastic (P Package) ................................................................................................ 150°C Storage Temperature Range ...................................................................... -65°C to 150°C Lead Temperature (Soldering, 10 seconds) ............................................................. 300°C Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground ...

Page 3

... (Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8582A-xxC with 0° 8.5A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) OUT LX8582A-00 (Adjustable) Parameter Symbol ...

Page 4

... Power Supply FIGURE 1 — DYNAMIC INPUT and OUTPUT TEST OVERLOAD RECOVERY Like almost all IC power regulators, the LX8582A is equipped with Safe Operating Area (SOA) protection. The SOA circuit limits the regulator's maximum output current to progressively lower values as the input-to-output voltage difference increases. By limiting the ...

Page 5

... FIGURE 3 — CONNECTIONS FOR BEST LOAD REGULATION LX8582A-xx LX8582A OUT IN V OUT ADJ V R1 REF I ADJ 50µ REF ADJ three-terminal device not possible to R2+ Actual parasitic line resistance Parasitic LX8582A Line Resistance OUT ADJ Connect R1 to Case of Regulator Connect R2 to Load . Peff 5 ...

Page 6

... DROPOUT (MAX) for the installed regulator. THERMAL CONSIDERATIONS The LX8582A regulator has internal power and thermal limiting circuitry designed to protect the device under overload conditions. For continuous normal load conditions, however, maximum junc- tion temperature ratings must not be exceeded important to give careful consideration to all sources of thermal resistance from junction to ambient ...

Page 7

... ADJ 121 1% 10µF 1k TTL 2N3904 1k FIGURE 6 — 5V REGULATOR WITH SHUTDOWN LX8582A-33 OUT IN IN GND FIGURE 7 — FIXED 3.3V OUTPUT REGULATOR ) DROPOUT (MAX) LX8582A- LX8582A OUT IN ADJ R1 121 C1* 10µ 1.25V 1 + OUT R1 5V 100µF 365 1% 3.3V Min. 15µF Tantalum or 100µF Aluminum capacitor. ...

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