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LM5050-1 Datasheet

FET Controller

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LM5050-1, LM5050-1-Q1
SNVS629F – MAY 2011 – REVISED DECEMBER 2019
LM5050-1, LM5050-1-Q1 High-Side OR-ing FET Controller
1 Features
1 Available in Standard and AEC-Q100 Qualified
Versions LM5050Q0MK-1 (up to 150°C TJ) and
LM5050Q1MK-1 (up to 125°C TJ)
Functional safety capable
– Documentation available to aid functional
safety system design
• Wide Operating Input Voltage Range, VIN: 1 V to
75 V (VBIAS required for VIN < 5 V)
• 100-V Transient Capability
• Charge Pump Gate Driver for External N-Channel
MOSFET
• Fast 50-ns Response to Current Reversal
• 2-A Peak Gate Turnoff Current
• Minimum VDS Clamp for Faster Turnoff
• Package: SOT-6 (Thin SOT-23-6)
2 Applications
Active OR-ing of Redundant (N+1) Power
Supplies
3 Description
The LM5050-1/-Q1 High Side OR-ing FET Controller
operates in conjunction with an external MOSFET as
an ideal diode rectifier when connected in series with
a power source. This ORing controller allows
MOSFETs to replace diode rectifiers in power
distribution networks thus reducing both power loss
and voltage drops.
The LM5050-1/-Q1 controller provides charge pump
gate drive for an external N-Channel MOSFET and a
fast response comparator to turn off the FET when
current flows in the reverse direction. The LM5050-1/-
Q1 can connect power supplies ranging from 5 V to
75 V and can withstand transients up to 100 V.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5050-1
LM5050-1-Q1
SOT (6)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Full Application
VIN
+5.0V to +75V
Shutdown
GND
IN
Low= FET On, High= FET Off
OFF
GATE
OUT
LM5050-1
VS
GND
VOUT
100:
0.1 PF
GND
Typical Redundant Supply Configuration
PS1 IN GATE OUT
LM5050-1 VS
GND
CLOAD RLOAD
PS2 IN GATE OUT
LM5050-1 VS
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LM5050-1 Datasheet Preview

LM5050-1 Datasheet

FET Controller

No Preview Available !

LM5050-1, LM5050-1-Q1
SNVS629F – MAY 2011 – REVISED DECEMBER 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings: LM5050-1 .......................................... 4
6.3 ESD Ratings: LM5050-1-Q1 ..................................... 4
6.4 Recommended Operating Conditions....................... 4
6.5 Thermal Information .................................................. 4
6.6 Electrical Characteristics........................................... 5
6.7 Typical Characteristics .............................................. 8
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 13
8 Application and Implementation ........................ 14
8.1 Application Information............................................ 14
8.2 Typical Applications ................................................ 16
9 Power Supply Recommendations...................... 21
10 Layout................................................................... 21
10.1 Layout Guidelines ................................................. 21
10.2 Layout Example .................................................... 21
11 Device and Documentation Support ................. 22
11.1 Documentation Support ........................................ 22
11.2 Related Links ........................................................ 22
11.3 Community Resources.......................................... 22
11.4 Trademarks ........................................................... 22
11.5 Electrostatic Discharge Caution ............................ 22
11.6 Glossary ................................................................ 22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (December 2015) to Revision F
Page
• Added Functional safety capable link to the Features section ............................................................................................... 1
Changes from Revision D (June 2013) to Revision E
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
2 Submit Documentation Feedback
Copyright © 2011–2019, Texas Instruments Incorporated
Product Folder Links: LM5050-1 LM5050-1-Q1


Part Number LM5050-1
Description FET Controller
Maker etcTI
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