LT1587CM-1.5 Linear Technology, LT1587CM-1.5 Datasheet

IC LDO REGULATOR 3A 1.5V DDPAK-3

LT1587CM-1.5

Manufacturer Part Number
LT1587CM-1.5
Description
IC LDO REGULATOR 3A 1.5V DDPAK-3
Manufacturer
Linear Technology
Datasheets

Specifications of LT1587CM-1.5

Regulator Topology
Positive Fixed
Voltage - Output
1.5V
Voltage - Input
2.7 ~ 7 V
Voltage - Dropout (typical)
1.15V @ 3A
Number Of Regulators
1
Current - Output
3A
Current - Limit (min)
3.1A
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-263-2, D⊃2Pak (2 leads + Tab), TO-263AB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1587CM-1.5
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LT1587CM-1.5#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1587CM-1.5#TR
Manufacturer:
LT
Quantity:
6 629
Part Number:
LT1587CM-1.5#TR
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1587CM-1.5#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
TYPICAL
3.3V
Fast Transient Response
Guaranteed Dropout Voltage at Multiple Currents
Load Regulation: 0.05% Typ
Trimmed Current Limit
On-Chip Thermal Limiting
Intel Pentium
Low Voltage Logic Supplies
Battery-Powered Circuitry
+
C1
100 F
10V
AVX TPS
V
IN
LT1587-1.5
GND
APPLICATION
®
V
OUT
Pro Processor GTL + Supply
U
+
V
3A
TT
C2, C3
100 F
10V
AVX TPS
= 1.5V
RX
TX
C4 TO
C6
1 F
U
RX
TX
R1
75
R2
150
V
Intel Pentium Pro Processor GTL + Supply
REF
Q1
C13
0.1 F
Q3
R5
100
142 TOTAL SIGNAL LINES
R7
100
Pentium is a registered trademark of Intel Corporation
DESCRIPTION
The LT
with a fixed 1.5V output voltage and 3A output current
capability. The design is optimized for low voltage applica-
tions where transient response and minimum input voltage
are critical. Similar to the LT1085, it has lower dropout and
faster transient response. These improvements make it
ideal for low voltage microprocessor applications, espe-
cially as the regulator in an Intel Pentium Pro processor
GTL + supply.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal lim-
iting provides protection against any combination of over-
load that creates excessive junction temperatures.
The LT1587-1.5 is available in both the through-hole and
surface mount versions of the industry standard 3-pin
TO-220 power package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
R8
100
Q4
®
R6
100
1587-1.5 is a low dropout 3-terminal regulator
V
Q2
REF
C14
0.1 F
R3
75
R4
150
RX
TX
U
NOTE: LTC RECOMMENDS SEPARATE
V
TO ENSURE CURRENT SHARING
BETWEEN THE REGULATORS AND TO
MINIMIZE V
GTL + Regulator
TT
RX
TX
C10 TO C12
1 F
GENERATORS AT EACH BUS END
Fast Response
V
Fixed 1.5V, 3A
TT
= 1.5V
Low Dropout
TT
3A
DISTRIBUTION DROPS
+
C8, C9
100 F
10V
AVX TPS
V
OUT
LT1587-1.5
LT1587-1.5
GND
V
LT1587 • TA01
IN
+
C7
100 F
10V
AVX TPS
3.3V
1

Related parts for LT1587CM-1.5

LT1587CM-1.5 Summary of contents

Page 1

... The LT1587-1.5 is available in both the through-hole and surface mount versions of the industry standard 3-pin TO-220 power package. , LTC and LT are registered trademarks of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation Intel Pentium Pro Processor GTL + Supply R6 ...

Page 2

... Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C PRECONDITIONI G 100% Thermal Limit Functional Test W U ORDER PART FRONT VIEW NUMBER LT1587CM-1.5 3-LEAD PLASTIC TO-220 Consult factory for Industrial and Military grade parts. can vary from 20 C 0mA J OUT 7V, 0mA I ...

Page 3

W U TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage vs Output Current 1.5 GUARANTEED 1.4 TEST POINTS 1.3 1 –5 C 1 125 C 0.8 0.7 0.6 0.5 0 0.5 1.0 1.5 ...

Page 4

LT1587-1 PLIFIED SCHE ATIC V IN GND U U APPLICATIONS INFORMATION General The LT1587-1.5 3-terminal regulator is easy to use and has all the protection features expected in a high perfor- mance linear regulator. The device is ...

Page 5

U U APPLICATIONS INFORMATION Large load current changes are exactly the situation pre- sented by modern microprocessors and their peripheral circuitry. The load current step contains higher order frequency components that the output decoupling network must handle until the regulator ...

Page 6

... IC junction to the bottom of the case directly below the die. This is the lowest resistance path for heat flow. Proper mounting ensures the best thermal flow from this area of the package to the heat sink. Linear Technology strongly recommends thermal compound at the case-to-heat sink interface. Use a thermally conductive spacer if the case of the device must be electrically isolated and include its contribution to the total thermal resistance ...

Page 7

... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U Dimensions in inches (millimeters) unless otherwise noted ...

Page 8

... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 : (408) 434-0507 FAX TELEX and V Switching Matrix 499-3977 COMMENTS Micropower Data Acquisition to Monitor System 5V to 3.3V at 10A or More Single-Slot Power Switch 0.54V Dropout at 7A, Fixed 2.5V or Adjustable OUT LT/GP 0995 10K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1995 ...

Related keywords