Product details

Vin (Min) (V) 6 Vin (Max) (V) 75 Features FET test, Linear control Iq (Typ) (mA) 0.4 Iq (Max) (mA) 0.72 IGate source (Typ) (uA) 32 IGate source (Max) (uA) 45 IGate sink (Typ) (mA) 2.8 IGate pulsed (Typ) (A) 2.8 Operating temperature range (C) -40 to 125 IReverse (Typ) (uA) VSense reverse (Typ) (mV) -28 /-41 Design support EVM, Reference Design, Simulation Model Rating Catalog Channel(s) controlled (#) 1 FET External VGS (Max) (V) 14.7
Vin (Min) (V) 6 Vin (Max) (V) 75 Features FET test, Linear control Iq (Typ) (mA) 0.4 Iq (Max) (mA) 0.72 IGate source (Typ) (uA) 32 IGate source (Max) (uA) 45 IGate sink (Typ) (mA) 2.8 IGate pulsed (Typ) (A) 2.8 Operating temperature range (C) -40 to 125 IReverse (Typ) (uA) VSense reverse (Typ) (mV) -28 /-41 Design support EVM, Reference Design, Simulation Model Rating Catalog Channel(s) controlled (#) 1 FET External VGS (Max) (V) 14.7
SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6
  • Wide Operating Input Voltage Range: +6V to +75V
  • +100 Volt Transient Capability
  • Charge Pump Gate Driver for External N-Channel MOSFET
  • MOSFET Diagnostic Test Mode
  • Fast 50ns Response to Current Reversal
  • 2A Peak Gate Turn-off Current
  • Minimum VDS Clamp for Faster Turn-off
  • Package: SOT-6 (Thin SOT23-6)

All trademarks are the property of their respective owners.

  • Wide Operating Input Voltage Range: +6V to +75V
  • +100 Volt Transient Capability
  • Charge Pump Gate Driver for External N-Channel MOSFET
  • MOSFET Diagnostic Test Mode
  • Fast 50ns Response to Current Reversal
  • 2A Peak Gate Turn-off Current
  • Minimum VDS Clamp for Faster Turn-off
  • Package: SOT-6 (Thin SOT23-6)

All trademarks are the property of their respective owners.

The LM5050-2 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 OR-ing controller allows MOSFETs to replace diode rectifiers in power distribution networks thus reducing both power loss and voltage drops.

The LM5050-2 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 LM5050-2 can connect power supplies ranging from +6V to +75V and can withstand transients up to +100V.

The LM5050-2 also provides a FET test diagnostic mode which allows the system controller to test for shorted MOSFETs.

The LM5050-2 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 OR-ing controller allows MOSFETs to replace diode rectifiers in power distribution networks thus reducing both power loss and voltage drops.

The LM5050-2 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 LM5050-2 can connect power supplies ranging from +6V to +75V and can withstand transients up to +100V.

The LM5050-2 also provides a FET test diagnostic mode which allows the system controller to test for shorted MOSFETs.

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Technical documentation

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Type Title Date
* Data sheet LM5050-2 High Side OR-ing FET Controller datasheet (Rev. B) 08 Mar 2013
Application note Basics of Ideal Diodes (Rev. B) 05 Oct 2021
E-book 11 Ways to Protect Your Power Path white paper 03 Jul 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide AN-2051 LM5050-2EVAL Evaluation Board (Rev. A) 06 May 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5050MK-2EVAL — Evaluation Board for the LM5050-2

The LM5050-2 evaluation board is designed to demonstrate the capabilities of the LM5050-2 OR-ing Diode Controller. It is intended for evaluation of the functions of the LM5050-2.

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Simulation model

LM5050 Unencrypted PSPICE Transient Model

SNVM010.ZIP (347 KB) - PSpice Model
Simulation model

LM5050-2 TINA-TI Transient Spice Model

SNVM062.ZIP (11 KB) - TINA-TI Spice Model
Simulation model

LM5050-2 TINA-TI Transient Reference Design

SNVM063.TSC (85 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

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TIDA-00701 is a 100W, 24V, Industrial AC-DC power supply designed for use in Industrial & Instrumentation systems such as process controls, factory automation and machinery control. This reference design has front end Power Factor Correction (PFC) circuit designed using UCC28051 PFC controller, (...)
Reference designs

TIDA-00702 — 60W, 24V High Efficiency Industrial Power Supply with Precision Voltage, Current and Power Limit

The TIDA-00702 is a 60-W, industrial AC-DC power supply designed for use in industrial and instrumentation systems such as process controls, factory automation, and machinery control. This reference design is a Quasi-resonant (QR) flyback converter implemented using the UCC28740 CC-CV flyback (...)
Reference designs

PMP7824 — 12Vin ORing Circuit Design (12V@7.5A)

A 12V nominal OR-ing circuit design, allowing users to select one of the two input supplies to be directed as the power supply to a system.
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