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LX8587-00CP

Part # LX8587-00CP
Description IC REG LDO ADJ 3A TO220
Category RECTIFIER
Availability In Stock
Qty 117
Qty Price
1 - 24 $7.85486
25 - 49 $6.24818
50 - 73 $5.89114
74 - 98 $5.47460
99 + $4.87953
Manufacturer Available Qty
Linfinity Microelectronics Inc
Date Code: 9711
  • Shipping Freelance Stock: 50
    Ships Immediately
Linfinity Microelectronics Inc
Date Code: 9711
  • Shipping Freelance Stock: 50
    Ships Immediately
Linfinity Microelectronics Inc
Date Code: 9711
  • Shipping Freelance Stock: 17
    Ships Immediately

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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

DESCRIPTION KEY FEATURES
■ Three-Terminal Adjustable Or Fixed
Output
■ Guaranteed
≤≤
≤≤
≤ 1.2V Headroom At 3A
(LX8587A)
■ Guaranteed
≤≤
≤≤
≤ 1.3V Headroom At 3A
(LX8587)
■ Output Current Of 3A
p Fast Transient Response
p 1% Voltage Reference Initial Accuracy
p Output Short Circuit Protection
p Built-In Thermal Shutdown
The LX8587/8587A series ICs are low
dropout three-terminal positive regulators
with a nominal 3A output current. Pen-
tium
®
Processor and Power PC
TM
appli-
cations requiring fast transient response
are ideally suited for this product family.
The LX8587A is guaranteed to have
< 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.
Current limit is trimmed above 3.1A to
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.
The LX8587/87A family of products are
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.
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
PRODUCT HIGHLIGHT
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.
TYPICAL APPLICATION OF THE LX8587/87A IN A 5V TO 3.3V MOTHERBOARD APPLICATION
LX8587A
200
W
1500µF
6MV1500GX
2x 1500µF
Sanyo
6MV1500GX
V
IN
³
4.75 3.3V/3A
121
W
The output capacitors must be low ESR and low ESL type for good transient response.
3A L
OW
D
ROPOUT
P
OSITIVE
R
EGULATORS
P RODUCTION DATA SHEET
THE INFINITE POWER OF INNOVATION
LX8587-xx/8587A-xx
LIN DOC #:
8587
PACKAGE ORDER INFORMATION
T
A
(°C)
Plastic TO-220
3-pin
P
Plastic TO-263
3-pin
DD
0 to 125
1.3V LX8587-xxCP LX8587-xxCDD
1.2V LX8587A-xxCP LX8587A-xxCDD
Dropout
Voltage
LX8587/87A-00 Adjustable
LX8587/87A-15 1.5V
LX8587/87A-33 3.3V
Part #
Output
Voltage
AVAILABLE OPTIONS PER PART #
Other voltage options may be available —
Please contact factory for details.
Copyright © 1998
Rev. 1.2 3/98
1
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
L INFINITY MICROELECTRONICS INC.
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
3A L
OW
D
ROPOUT
P
OSITIVE
R
EGULATORS
LX8587-xx/8587A-xx
PRODUCT DATABOOK 1996/1997
Copyright © 1998
Rev. 1.2 3/98
2
P
RODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS (Note 1)
Power Dissipation ................................................................................ Internally Limited
Input Voltage ............................................................................................................... 10V
Input to Output Voltage Differential .......................................................................... 10V
Maximum Output Current ............................................................................................. 5A
Operating Junction Temperature
Plastic (P Package) ............................................................................................... 150°C
Storage Temperature Range...................................................................... -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) ............................................................ 300°C
PACKAGE PIN OUTS
P PACKAGE
(Top View)
* Pin 1 is GND for fixed voltage versions.
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified terminal.
V
IN
V
OUT
ADJ /
GND*
3
2
1
P PACKAGE:
THERMAL RESISTANCE-JUNCTION TO TAB,
θθ
θθ
θ
JT
3.0°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθ
θθ
θ
JA
60°C/W
DD PACKAGE:
THERMAL RESISTANCE-JUNCTION TO TAB,
θθ
θθ
θ
JT
3.0°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θθ
θθ
θ
JA
60°C/W*
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x θ
JA
).
The θ
JA
numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow.
* With package soldered to 0.5 in.
2
copper area over back-side ground plane or internal
power plane, θ
JA
can vary from 20°C/W to 40°C/W, depending on mounting technique.
THERMAL DATA
3
2
1
V
IN
ADJ / GND*
V
OUT
DD PACKAGE
(Top View)
* Pin 1 is GND for fixed voltage versions.
TAB IS V
OUT
TAB IS V
OUT
3A L
OW
D
ROPOUT
P
OSITIVE
R
EGULATORS
LX8587-xx/8587A-xx
PRODUCT DATABOOK 1996/1997
3
Copyright © 1998
Rev. 1.2 3/98
P RODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8587-xx/87A-xx with 0°C ≤ T
A
≤ 125°C;
V
IN
- V
OUT
= 3V; I
OUT
= 3A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Symbol
Test Conditions Units
LX8587/87A-00
Min. Typ. Max.
1.238 1.250 1.262 V
1.225 1.250 1.275 V
0.035 0.2 %
0.1 0.5 %
0.01 0.02 %/W
65 83 dB
55 100 µA
0.2 5 µA
1.1 1.3 V
1 1.2 V
210mA
3.0 5 A
0.25 %
1%
0.003 %
Reference Voltage V
REF
I
OUT
= 10mA, T
A
= 25°C
10mA ≤ I
OUT
≤ 3A, 1.5V ≤ (V
IN
- V
OUT
), V
IN
≤ 7V, P ≤ P
MAX
Line Regulation (Note 2)
∆V
REF
(V
IN
)
I
OUT
= 10mA, 1.5V ≤ (V
IN
- V
OUT
), V
IN
≤ 7V
Load Regulation (Note 2)
∆V
REF
(I
OUT
)
V
IN
- V
OUT
= 3V, 10mA ≤ I
OUT
≤ 3A
Thermal Regulation
∆V
OUT
(Pwr)
T
A
= 25°C, 20ms pulse
Ripple Rejection (Note 3) V
OUT
= 3.3V, f =120Hz, C
OUT
= 100µf Tantalum, V
IN
= 5V
C
ADJ
= 10µF, I
OUT
= 3A
Adjust Pin Current I
ADJ
Adjust Pin Current Change ∆I
ADJ
10mA ≤ I
OUT
≤ 3A, 1.5V ≤ (V
IN
- V
OUT
), V
IN
≤ 7V
Dropout Voltage LX8587-00 ∆V ∆V
REF
= 1%, I
OUT
= 3A
LX8587A-00 ∆V
REF
= 1%, I
OUT
= 3A
Minimum Load Current I
OUT(MIN)
V
IN
≤ 7V
Maximum Output Current I
OUT(MAX)
1.4V ≤ (V
IN
- V
OUT
), V
IN
≤ 7V
Temperature Stability ∆V
OUT
(T)
Long Term Stability ∆V
OUT
(t) T
A
= 125°C, 1000 hrs
RMS Output Noise (% of V
OUT
)V
OUT (RMS)
T
A
= 25°C, 10Hz £ f £ 10kHz
Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specification for thermal regulation.
Note 3. These parameters, although guaranteed, are not tested in production.
Parameter
Symbol
Test Conditions Units
LX8587-15/87A-15
Min. Typ. Max.
Output Voltage V
OUT
V
IN
= 5V, I
OUT
= 0mA, T
A
= 25°C
3.0V ≤ V
IN
≤ 7V, 0mA ≤ I
OUT
≤ 3A, P ≤ P
MAX
Line Regulation (Note 2) ∆V
OUT
4.75V ≤ V
IN
≤ 7V
(V
IN
)
4.75V ≤ V
IN
≤ 10V
Load Regulation (Note 2)
∆V
OUT
(I
OUT
)
V
IN
= 5V, 0mA ≤ I
OUT
≤ I
OUT (MAX)
Thermal Regulation (Note 3)
∆V
OUT
(Pwr)
T
A
= 25°C, 20ms pulse
Ripple Rejection (Note 3) C
OUT
= 100µF (Tantalum), I
OUT
= 3A
Quiescent Current I
Q
0mA ≤ I
OUT
≤ I
OUT (MAX)
, 4.75V ≤ V
IN
≤ 10V
Dropout Voltage LX8587-15 ∆V ∆V
OUT
= 1%, I
OUT
≤ I
OUT (MAX)
LX8587A-15 ∆V
OUT
= 1%, I
OUT
≤ I
OUT (MAX)
Maximum Output Current I
OUT (MAX)
V
IN
≤ 7V
Temperature Stability (Note 3) ∆V
OUT
(T)
Long Term Stability (Note 3) ∆V
OUT
(t) T
A
= 125°C, 1000 hours
RMS Output Noise (% of V
OUT
) (Note 3) V
OUT (RMS)
T
A
= 25°C, 10Hz ≤ f ≤ 10kHz
1.485 1.5 1.515 V
1.470 1.5 1.530 V
16mV
210mV
5 7.5 mV
0.01 0.02 % / W
60 75 dB
410mA
1.1 1.3 V
1 1.2 V
3.0 5.0 A
0.25 %
0.3 1 %
0.003 %
LX8587-00/87A-00 (Adjustable)
LX8587-15/87A-15 (1.5V Fixed)
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