LM2587T-ADJ/NOPB National Semiconductor, LM2587T-ADJ/NOPB Datasheet

IC REG SIMPLE SWITCHER TO-220-5

LM2587T-ADJ/NOPB

Manufacturer Part Number
LM2587T-ADJ/NOPB
Description
IC REG SIMPLE SWITCHER TO-220-5
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Up (Boost), Flyback, Forward Converterr
Datasheets

Specifications of LM2587T-ADJ/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
Adjustable
Current - Output
5A
Frequency - Switching
100kHz
Voltage - Input
4 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Bent and Staggered Leads)
Current, Input Bias
125 nA
Current, Output
5 A
Current, Supply
11 mA
Frequency, Oscillator
100 kHz
Package Type
TO-220
Regulation, Line
20 mV
Regulation, Load
20 mV
Regulator Type
Boost (Step-Up)
Resistance, Thermal, Junction To Case
2 °C/W
Temperature, Operating, Range
-40 to +125 °C
Transconductance
3.2
Voltage, Gain
670 V/V
Voltage, Input
4 to 40 V
Primary Input Voltage
40V
No. Of Outputs
1
Output Voltage
37V
Output Current
5A
No. Of Pins
5
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Filter Terminals
Through Hole
Rohs Compliant
Yes
For Use With
551011367-061 - BOARD WEBENCH LM2577,LM2585/87LM2587EVAL - EVALUATION BOARD FOR LM2587
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LM2587T-ADJ
*LM2587T-ADJ/NOPB
LM2587T-ADJ

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2587T-ADJ/NOPB
Manufacturer:
SANKEN
Quantity:
30 000
Part Number:
LM2587T-ADJ/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
© 2004 National Semiconductor Corporation
Ordering Information
5-Lead TO-220 Bent, Staggered Leads
5-Lead TO-263
5-Lead TO-263 Tape and Reel
LM2587
SIMPLE SWITCHER
General Description
The LM2587 series of regulators are monolithic integrated
circuits specifically designed for flyback, step-up (boost), and
forward converter applications. The device is available in 4
different output voltage versions: 3.3V, 5.0V, 12V, and ad-
justable.
Requiring a minimum number of external components, these
regulators are cost effective, and simple to use. Included in
the datasheet are typical circuits of boost and flyback regu-
lators. Also listed are selector guides for diodes and capaci-
tors and a family of standard inductors and flyback trans-
formers designed to work with these switching regulators.
The power switch is a 5.0A NPN device that can stand-off
65V. Protecting the power switch are current and thermal
limiting circuits, and an undervoltage lockout circuit. This IC
contains a 100 kHz fixed-frequency internal oscillator that
permits the use of small magnetics. Other features include
soft start mode to reduce in-rush current during start up,
current mode control for improved rejection of input voltage
and output load transients and cycle-by-cycle current limit-
ing. An output voltage tolerance of
input voltages and output load conditions, is guaranteed for
the power supply system.
Flyback Regulator
SIMPLE SWITCHER
Package Type
®
and Switchers Made Simple
®
are registered trademarks of National Semiconductor Corporation.
±
4%, within specified
DS012316
®
NSC Package
5A Flyback Regulator
Drawing
T05D
TS5B
TS5B
LM2587T-3.3, LM2587T-5.0, LM2587T-12, LM2587T-ADJ
LM2587S-3.3, LM2587S-5.0, LM2587S-12, LM2587S-ADJ
LM2587SX-3.3, LM2587SX-5.0, LM2587SX-12,
LM2587SX-ADJ
Features
n Requires few external components
n Family of standard inductors and transformers
n NPN output switches 5.0A, can stand off 65V
n Wide input voltage range: 4V to 40V
n Current-mode operation for improved transient
n 100 kHz switching frequency
n Internal soft-start function reduces in-rush current during
n Output transistor protected by current limit, under
n System Output Voltage Tolerance of
Typical Applications
n Flyback regulator
n Multiple-output regulator
n Simple boost regulator
n Forward converter
response, line regulation, and current limit
start-up
voltage lockout, and thermal shutdown
and load conditions
Order Number
01231601
±
4% max over line

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LM2587T-ADJ/NOPB Summary of contents

Page 1

... Typical Applications n Flyback regulator n Multiple-output regulator n Simple boost regulator ± 4%, within specified n Forward converter NSC Package Drawing T05D LM2587T-3.3, LM2587T-5.0, LM2587T-12, LM2587T-ADJ TS5B LM2587S-3.3, LM2587S-5.0, LM2587S-12, LM2587S-ADJ TS5B LM2587SX-3.3, LM2587SX-5.0, LM2587SX-12, LM2587SX-ADJ DS012316 ± 4% max over line 01231601 Order Number ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage Switch Voltage Switch Current (Note 2) −0.4V ≤ V Compensation Pin Voltage −0.4V ≤ V Feedback Pin Voltage Storage Temperature Range Lead Temperature (Soldering, 10 sec ...

Page 3

LM2587-5.0 Electrical Characteristics Symbol Parameters Voltage V ∆V Reference Voltage V REF Line Regulation G Error Amp I M COMP Transconductance V A Error Amp V VOL Voltage Gain R LM2587-12 Electrical Characteristics Specifications with standard type face are for ...

Page 4

LM2587-ADJ Electrical Characteristics Symbol Parameters ∆V Reference Voltage V REF IN Line Regulation G Error Amp I M COMP Transconductance V COMP A Error Amp V VOL COMP Voltage Gain R COMP I Error Amp V B COMP Input Bias ...

Page 5

All Output Voltage Versions Electrical Characteristics Symbol Parameters θ S Package, Junction to Ambient (Note 12) JA θ S Package, Junction to Ambient (Note 13) JA θ S Package, Junction to Ambient (Note 14) JA θ S Package, Junction to ...

Page 6

... Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM2587T-3.3, LM2587T-5.0, LM2587T-12 or LM2587T-ADJ NS Package Number T05D 26 ...

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