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LX8587X Datasheet

  • LX8587X

  • Microsemi Corporation [3A Low Dropout Positive Regulators]

  • MICROSEMI

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LX8587x-xx
TM
廬
3A Low Dropout Positive Regulators
P
RODUCTION
D
ATA
S
HEET
DESCRIPTION
The LX8587/87A Series ICs are positive
regulators designed to provide 3A output
current. Pentium廬 Processor and Power
PC鈩?applications requiring fast transient
response are ideally suited for this product
family.
The LX8587A is guaranteed to have
<1.2 dropout at 3A and the LX8587 < 1.3V
at the same current, making them ideal to
provide well-regulated outputs of 2.5V to
3.6V using a 5V input supply. Fixed
versions are also available and specified in
the Available Options table below.
Current limit is trimmed about 3.1A to
ensure adequate output current and
controlled short-circuit current. On-chip
thermal limiting provides protection against
any combination of overload conditions that
would create excessive junction
temperatures.
The LX8587/87A family of products are
available in the TO-220 through hole, the
TO-263 surface-mount, and the TO-252
surface-mount packages. For higher current
applications see the LX8585 and the
LX8584 data sheets.
KEY FEATURES
WWW .
Microsemi
.C
OM
Three-Terminal Adjustable Or
Fixed Output
Guaranteed < 1.2V Headroom At
3A (LX8587A)
Guaranteed < 1.3V Headroom At
3A (LX8587)
Output Current of 3A
Fast Transient Response
1% Voltage Reference Initial
Accuracy
Output Short Circuit Protection
Built-In Thermal Shutdown
APPLICATIONS
Pentium Processor Supplies
Power PC Supplies
Microprocessor Supplies
Low Voltage Logic Supplies
Post Regulator for Switching
Supply
ASIC & Low Voltage Chipset
Supplies
Graphics & Sound Cards
Processor I/O Supply
OUTPUT
VOLTAGE
Adjustable
1.5V
3.3V
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
PRODUCT HIGHLIGHT
T
YPICAL
A
PPLICATION OF THE
LX8587/87A
IN A
5V
TO
3.3V M
OTHERBOARD
IN
V
IN
> 4.75V
+
*1500碌F
6MV1500GX
Sanyo
LX8587A
ADJ
200惟
1%
OUT
121惟
1%
+
3.3V
at 3A
1500碌F
2x 6MV1500GX
Sanyo
PART #
LX8587/87A-00
The output capacitors must be low ESR and low ESL type for good transient response
.
LX8587/87A-15
LX8587/87A-33
Table 1
- Available Options
LX8587
X
LX8587
X
T
A
(擄C)
0 to 125
Max Dropout
Voltage
1.3V
1.2V
DT
PACKAGE ORDER INFO
Plastic TO-220
Plastic TO-252
P
3-Pin
(D-Pak) 3-Pin
RoHS Compliant
Transition DC: 0543
DD
Plastic TO-263
3-Pin
RoHS Compliant
Transition DC: 0532
RoHS Compliant
Transition DC: 0535
LX8587-xxCDT
LX8587A-xxCDT
LX8587-xxCP
LX8587A-xxCP
LX8587-xxCDD
LX8587A-xxCDD
Note: Available in Tape & Reel. Append the letters 鈥淭R鈥?to the part number. (i.e. LX8587-00CP-TR)
Copyright
漏
2000
Rev. 2.0a, 2005-10-25
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1

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