LX8587-33 Microsemi Corporation, LX8587-33 Datasheet

no-image

LX8587-33

Manufacturer Part Number
LX8587-33
Description
3A LOW DROPOUT POSITIVE REGULATORS
Manufacturer
Microsemi Corporation
Datasheet
T
Copyright © 1998
Rev. 1.2
H E
T
V
The LX8587/8587A series ICs are low
dropout three-terminal positive regulators
with a nominal 3A output current. Pen-
tium
cations requiring fast transient response
are ideally suited for this product family.
< 1.2V dropout at 3A and the LX8587
< 1.3V at the same current, making
them ideal to provide well-regulated out-
puts of 2.5V to 3.6V using a 5V input
supply. Fixed versions are also available
and specified in the Available Options
table below.
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
YPICAL
IN
The LX8587A is guaranteed to have
3/98
I
6MV1500GX
®
N F I N I T E
4.75
Processor and Power PC
A
The output capacitors must be low ESR and low ESL type for good transient response.
PPLICATION OF THE
1500µF
11861 W
P
O W E R
P R O D U C T H I G H L I G H T
LX8587/87A
ESTERN
0 to 125
D E S C R I P T I O N
T
TM
A
O F
L
(°C)
appli-
A
I N
LX8587A
Note: All surface-mount packages are available in Tape & Reel.
VENUE
Append the letter "T" to part number. (i.e. LX8587A-00CDDT)
I
P A C K A G E O R D E R I N F O R M A T I O N
F
N N O V A T I O N
IN A
"xx" refers to output voltage, please see table above.
I N I T Y
200
, G
Dropout
ensure adequate output current and con-
trolled short-circuit current. On-chip
thermal limiting provides protection
against any combination of overload con-
ditions that would create excessive junc-
tion temperatures.
available in both TO-220 through-hole
as well as TO-263 surface-mount pack-
ages. For higher current applications,
see the LX8585 and LX8584 data sheets.
Voltage
5V
ARDEN
1.3V
1.2V
Current limit is trimmed above 3.1A to
The LX8587/87A family of products are
TO
3.3V M
M
G
ROVE
I C R O E L E C T R O N I C S
121
P
, CA. 92841, 714-898-8121, F
LX8587A-xxCP
OTHERBOARD
Plastic TO-220
3-pin
LX8587-xxCP
3 A L
2x 1500µF
Sanyo
6MV1500GX
A
PPLICATION
P
3.3V/3A
O W
R O D U C T I O N
DD
LX8587-xx/8587A-xx
D
LX8587A-xxCDD
LX8587-xxCDD
Plastic TO-263
3-pin
R O P O U T
I
N C
A
AX
p Fast Transient Response
p 1% Voltage Reference Initial Accuracy
p Output Short Circuit Protection
p Built-In Thermal Shutdown
VA I L A B L E
Other voltage options may be available —
Part #
LX8587/87A-00
LX8587/87A-15
LX8587/87A-33
: 714-893-2570
.
Three-Terminal Adjustable Or Fixed
Output
Guaranteed
(LX8587A)
Guaranteed
(LX8587)
Output Current Of 3A
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
P
Please contact factory for details.
O S I T I V E
A P P L I C A T I O N S
K E Y F E A T U R E S
D
A T A
O
P T I O N S P E R
1.2V Headroom At 3A
1.3V Headroom At 3A
LIN D
R
S
E G U L A T O R S
H E E T
Adjustable
O C
Voltage
Output
1.5V
3.3V
#: 8587
P
A R T
1
#

Related parts for LX8587-33

LX8587-33 Summary of contents

Page 1

... Voltage 1.3V LX8587-xxCP 1.2V LX8587A-xxCP Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX8587A-00CDDT) "xx" refers to output voltage, please see table above ...

Page 2

... LX8587-xx/8587A- Power Dissipation ................................................................................ Internally Limited Input Voltage ............................................................................................................... 10V Input to Output Voltage Differential .......................................................................... 10V Maximum Output Current ............................................................................................. 5A Operating Junction Temperature Plastic (P Package) ............................................................................................... 150° ...

Page 3

... (Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8587-xx/87A-xx with 0° 3V 3A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) ...

Page 4

... LX8587-xx/8587A-xx LX8587-33/87A-33 (3.3V Fixed) Parameter Output Voltage Line Regulation (Note 2) Load Regulation (Note 2) Thermal Regulation (Note 3) Ripple Rejection (Note 3) Quiescent Current Dropout Voltage LX8587-33 LX8587A-33 Maximum Output Current Temperature Stability (Note 3) ...

Page 5

... The LX8587/87A series ICs are easy to use Low-Dropout (LDO) voltage regulators. They have all of the standard self-protection features expected of a voltage regulator: short circuit protection, safe operating area protection and automatic thermal shutdown if the device temperature rises above approximately 165° ...

Page 6

... I R2 OUT REF ADJ R1 FIGURE 2 — Basic Adjustable Regulator LX8587/87A regulators are three-terminal devices R2+ Actual parasitic line resistance Parasitic LX8587/87A Line Resistance OUT IN ADJ Connect R1 to Case of Regulator OUT . Peff R L Connect R2 to Load Copyright © 1998 Rev ...

Page 7

... T = 11W (2.7°C/W + 1.0°C/W + 3.0°C/W) + 50°C = 124° Although the device can operate up to 150°C junction recom- mended for long term reliability to keep the junction temperature below 125°C whenever possible. LX8587-xx/8587A- 2.8V 5.0A OUT = 50° 2.7°C/W for TO-220 ...

Page 8

... OUT IN IN (Note A) ADJ 10µF 1k TTL 2N3904 Output 1k FIGURE 6 — 5V Regulator With Shutdown LX8587-33/87A-33 V OUT IN IN GND FIGURE 7 — Fixed 3.3V Output Regulator ) DROPOUT (MAX) Pentium is a registered trademark of Intel Corporation. Power trademark of International Business Machines Corporation ...

Related keywords