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LM5000 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM5000
Description  High Voltage Switch Mode Regulator
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5000 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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LM5000EP
Enhanced Plastic High Voltage Switch Mode Regulator
General Description
The LM5000EP is a monolithic integrated circuit specifically
designed and optimized for flyback, boost or forward power
converter applications. The internal power switch is rated for
a maximum of 80V, with a current limit set to 2A. Protecting
the power switch are current limit and thermal shutdown
circuits. The current mode control scheme provides excellent
rejection of line transients and cycle-by-cycle current limiting.
An external compensation pin and the built-in slope compen-
sation allow the user to optimize the frequency compensa-
tion. Other distinctive features include softstart to reduce
stresses during start-up and an external shutdown pin for
remote ON/OFF control. There are two operating frequency
ranges available. The LM5000-3EP is pin selectable for
either 300kHz (FS Grounded) or 700kHz (FS Open). The
LM5000-6EP is pin selectable for either 600kHz (FS
Grounded) or 1.3MHz (FS Open). The device is available in
a low profile 16-lead TSSOP package or a thermally en-
hanced 16-lead LLP package.
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
Features
n
80V internal switch
n
Operating input voltage range of 3.1V to 40V
n
Pin selectable operating frequency
300kHz/700kHz (-3)
600kHz/1.3MHz (-6)
n
Adjustable output voltage
n
External compensation
n
Input undervoltage lockout
n
Softstart
n
Current limit
n
Over temperature protection
n
External shutdown
n
Small 16-Lead TSSOP or 16-Lead LLP package
Applications
n
Flyback Regulator
n
Forward Regulator
n
Boost Regulator
n
Distributed Power Converters
n
Selected Military Applications
n
Selected Avionics Applications
Ordering Information
PART NUMBER
VID PART NUMBER
NS PACKAGE NUMBER (Note 3)
LM5000-3MTCEP
V62/04632-01
MTC16
(Notes 1, 2)
TBD
TBD
Note 1: For the following (Enhanced Plastic) version, check for availability: LM5000-3MTCXEP, LM5000SD-3EP, LM5000SD-6EP, LM5000SDX-3EP,
LM5000SDX-6EP. 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
May 2004
© 2004 National Semiconductor Corporation
DS200983
www.national.com


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