LMS1587CT1.5EP [NSC]
IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSFM3, PLASTIC, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator;
| 型号： | LMS1587CT1.5EP |
| 厂家： | 
National Semiconductor |
| 描述： | IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSFM3, PLASTIC, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator 局域网 输出元件 调节器 |
| 文件： | 总8页 (文件大小：158K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
National Semiconductor is now part of
Texas Instruments.
Search http://www.ti.com/ for the latest technical
information and details on our current products and services.
June 2004
LMS1585AEP/LMS1587EP
Enhanced Plastic 5A and 3A Low Dropout Fast
Response Regulators
General Description
Features
n Fast transient response
The LMS1585AEP and LMS1587EP are low dropout posi-
tive regulators with output load current of 5A and 3A respec-
tively. Their low dropout voltage (1.2V) and fast transient
response make them an excellent solution for low voltage
microprocessor applications.
n Available in Adjustable, 1.5V, and 3.3V versions
n Current limiting and thermal protection
n Line regulation
n Load regulation
0.005% (typical)
0.05% (typical)
The LMS1585AEP/87EP are available in adjustable ver-
sions, which can set the output voltage with only two external
resistors. In addition, they are also available in 1.5V and
3.3V fixed voltage versions (Note 12).
Applications
n Low voltage logic supplies
n Selected Military Applications
n Selected Avionics Applications
The LMS1585AEP/87EP circuits include a zener trimmed
bandgap reference, current limiting and thermal shutdown.
The LMS1585AEP/87EP series are available in TO-220 and
TO-263 packages.
ENHANCED PLASTIC
•
•
•
•
•
•
Extended Temperature Performance of −40˚C to 125˚C
Baseline Control - Single Fab & Assembly Site
Process Change Notification (PCN)
Qualification & Reliability Data
Solder (PbSn) Lead Finish is standard
Enhanced Diminishing Manufacturing Sources (DMS)
Support
Ordering Information
PART NUMBER
LMS1585AIS33EP
LMS1585AISADJEP
LMS1587ISXADJEP
(Notes 1, 2)
VID PART NUMBER
V62/04639-01
V62/04639-02
V62/04639-03
TBD
NS PACKAGE NUMBER (Note 3)
TS3B
TS3B
TS3B
TBD
Note 1: For the following (Enhanced Plastic) version, check for availability: LMS1585ACT3.3EP, LMS1585ACTADJEP, LMS1585AIT1.5EP,
LMS1585AIT3.3EP, LMS1585AITADJEP, LMS1585ACS1.5EP, LMS1585ACS3.3EP, LMS1585ACSADJEP, LMS1585AIS1.5EP, LMS1585ACSX33EP,
LMS1585CSXADJEP, LMS1585AISX15EP, LMS1585AISX33EP, LMS1585ASXADJEP, LMS1587CT1.5EP, LMS1587CT3.3EP, LMS1587CTADJEP,
LMS1587IT1.5EP, LMS1587IT3.3EP, LMS1587ITADJEP, LMS1587CS1.5EP, LMS1587CS3.3EP, LMS1587CSADJEP, LMS1587IS1.5EP, LMS1587IS3.3EP,
LMS1587ISADJEP, LMS1587CSX3.3EP, LMS1587CSXADJEP, LMS1587ISX1.5EP, LMS1587ISX3.3EP. Parts listed with an "X" are provided in Tape &
Reel and parts without an "X" are in Rails.
Note 2: FOR ADDITIONAL ORDERING AND PRODUCT INFORMATION, PLEASE VISIT THE ENHANCED PLASTIC WEB SITE AT: www.national.com/
mil
Note 3: Refer to package details under Physical Dimensions
© 2004 National Semiconductor Corporation
DS200998
www.national.com
Typical Application
20099801
Connection Diagrams
TO-220
TO-263
20099836
Top View
20099835
Top View
Simplified Schematic
20099814
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2
Absolute Maximum Ratings (Note 4)
Power Dissipation (Note 5)
Junction Temperature (TJ) (Note 5)
Storage Temperature Range
Lead Temperature
Internally Limited
150˚C
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
-65˚C to 150˚C
260˚C, 10 sec
2000V
Maximum Input to Output Voltage
ESD Tolerance (Note 6)
(VIN to GND)
13V
Electrical Characteristics
Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junc-
tion temperature range for operation, 0˚C to 125˚C for commercial grade and −40˚C to 125˚C for Enhanced Plastic.
Min
(Note 8)
Typ
(Note 7)
Max
(Note 8)
Symbol
Parameter
Conditions
LMS1585A-ADJEP
Units
VREF
Reference Voltage
VIN−VOUT = 3V, IOUT = 10mA
10mA ≤ IOUT ≤ 5A, 1.5V ≤ VIN−VOUT ≤ 5.75V
LMS1587-ADJEP
1.238
1.25
1.262
V
V
1.225
1.250
1.275
10mA ≤ IOUT ≤ 3A, 1.5V ≤ VIN−VOUT ≤ 5.75V
LMS1585A-1.5EP
1.225
1.250
1.500
1.275
V
VOUT
Output Voltage
IOUT = 0mA, VIN = 5V
1.485
1.515
V
V
0 ≤ IOUT ≤ 5A, 3V ≤ VIN ≤ 7V
LMS1585A-3.3EP
1.470
1.530
IOUT = 0mA, VIN = 5V
3.267
3.300
3.300
3.333
V
V
0 ≤ IOUT ≤ 5A, 4.75V ≤ VIN ≤ 7V
LMS1587-1.5EP
3.235
3.365
VIN = 5V, IOUT = 0mA, TJ = 25˚C
0≤ IOUT ≤ 3A, 3V ≤ VIN ≤ 7V
LMS1587-3.3EP
1.485
1.500
1.500
1.515
V
V
1.470
1.530
0 ≤ IOUT ≤ 3A, 4.75V ≤ VIN ≤ 7V
LMS1585AEP/87-ADJEP
3.235
3.300
0.005
0.005
0.005
3.365
0.2
V
%
%
∆VOUT
Line Regulation
(Note 9)
IOUT = 10mA, 2.75V ≤ VIN ≤ 7V
LMS1585AEP/87-3.3EP
IOUT = 0mA, 4.75V ≤ VIN ≤ 7V
LMS1585AEP/87-1.5EP
0.2
IOUT = 0mA, 3V ≤ VIN ≤ 7V
LMS1585A-ADJEP
0.2
0.3
0.5
0.3
0.5
0.3
0.5
0.3
0.5
%
%
∆VOUT
Load Regulation
(Note 9)
VIN−VOUT = 3V, 10mA ≤ IOUT ≤ 5A
LMS1585A-1.5EP/LMS1585A-3.3EP
VIN = 5V, 0 ≤ IOUT ≤ 5A
0.05
0.05
0.05
0.05
0.05
0.05
0.05
%
LMS1587-ADJEP
VIN−VOUT = 3V, 10mA ≤ IOUT ≤ 3A
LMS1587-1.5EP/LMS1587-3.3EP
VIN = 5V, 0 ≤ IOUT ≤ 3A
%
%
%
V
IN−VOUT Dropout Voltage
LMS1585A-ADJEP/LMS1587-ADJEP
∆VREF = 1%, IOUT = 3A
1.15
1.3
V
LMS1585A-3.3EP/LMS1587-3.3EP/
LMS1585A-1.5EP/LMS1587-1.5EP
∆VOUT = 1%, IOUT = 3A
1.15
1.2
1.3
1.4
1.4
V
V
V
LMS1585A-ADJEP
∆VREF = 1%, IOUT = 5A
LMS1585A-1.5EP/LMS1585A-3.3EP
∆VOUT = 1%, IOUT = 5A
1.2
3
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Electrical Characteristics (Continued)
Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing in Boldface type apply over the entire junc-
tion temperature range for operation, 0˚C to 125˚C for commercial grade and −40˚C to 125˚C for Enhanced Plastic.
Min
(Note 8)
Typ
(Note 7)
Max
(Note 8)
Symbol
Parameter
Current Limit
Conditions
Units
ILIMIT
LMS1585A-ADJEP/LMS1585A-3.3EP/
LMS1585A-1.5EP
VIN−VOUT = 5.5V
5.0
3.1
6.6
A
LMS1587-ADJEP/LMS1587-3.3EP/
LMS1587-1.5EP
VIN−VOUT = 5.5V
4.3
2.0
A
Minimum Load
LMS1585AEP/87-ADJEP
1.5V ≤ VIN−VOUT ≤ 5.75V
LMS1585A-3.3EP/LMS1587-3.3EP/
LMS1585A-1.5EP/LMS1587-1.5EP
VIN = 5V
Current (Note 10)
Quiescent Current
10.0
13.0
mA
7.0
mA
Thermal Regulation
Ripple Rejection
TA = 25˚C, 30ms Pulse
0.003
%/W
LMS1585A-ADJEP
fRIPPLE = 120Hz, VIN−VOUT = 3V,
IOUT = 5A, COUT = 25µF Tantalum
LMS1585A-1.5EP
72
72
72
72
72
dB
dB
dB
dB
dB
fRIPPLE = 120Hz, COUT = 25µF Tantalum,
IOUT = 5A, VIN = 4.5V
60
LMS1585A-3.3EP
fRIPPLE = 120Hz, COUT = 25µF Tantalum,
IOUT = 5A, VIN = 6.3V
LMS1587-ADJEP
fRIPPLE = 120Hz, VIN−VOUT = 3V, IOUT = 3A
COUT = 25µF Tantalum
LMS1587-1.5EP
fRIPPLE = 120Hz, COUT = 25µF Tantalum,
IOUT = 3A, VIN = 4.5V
60
LMS1587-3.3EP
fRIPPLE = 120Hz, COUT = 25µF Tantalum,
IOUT = 3A, VIN = 6.3V
72
55
dB
µA
Adjust Pin Current
Adjust Pin Current
120
10mA ≤ IOUT ≤ IFULLLOAD
,
1.5V ≤ VIN−VOUT ≤ 5.75V (Note 11)
0.2
0.5
µA
%
%
%
Temperature Stability
Long Term Stability
RMS Output Noise
TA = 125˚C, 1000Hrs
0.03
0.003
10Hz ≤ f ≤ 10kHz
(% of VOUT
)
Thermal Resistance
Junction-to-Case
3-Lead TO-263: Control/Output Section
3-Lead TO-220: Control/Output Section
0.65/2.7
0.65/2.7
˚C/W
˚C/W
Note 4: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 5: The maximum power dissipation is a function of T
, θ , and T . The maximum allowable power dissipation at any ambient temperature
JA A
J(max)
is P = (T
–T )/θ . All numbers apply for packages soldered directly into a PC board.
D
J(max)
A JA
Note 6: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF.
Note 7: Typical Values represent the most likely parametric norm.
Note 8: All limits are guaranteed by testing or statistical analysis.
Note 9: Load and line regulation are measured at constant junction temperature, and are guaranteed up to the maximum power dissipation of 30W. Power
dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output
range.
Note 10: The minimum output current required to maintain regulation.
Note 11: I
is 5A for LMS1585AEP and 3A for LMS1587EP.
FULLLOAD
Note 12: Consult factory for other fixed voltage options.
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4
Application Note
Output Voltage
The adjustable version develops at 1.25V reference voltage,
(VREF), between the output and the adjust terminal. As
shown in Figure 1, this voltage is applied across resistor R1
to generate a constant current I1. This constant current then
flows through R2. The resulting voltage drop across R2 adds
to the reference voltage to sets the desired output voltage.
The current IADJ from the adjustment terminal introduces an
output error. But since it is small (120µA max), it becomes
negligible when R1 is in the 100Ω range.
For fixed voltage devices, R1 and R2 are integrated inside
the devices.
20099872
FIGURE 1. Basic Adjustable Regulator
5
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Physical Dimensions inches (millimeters)
unless otherwise noted
3-Pin TO-263
NS Package Number TS3B
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6
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
3-Pin TO-220
NS Package Number T03B
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2. A critical component is any component of a life
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