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LM5050-2

ACTIVE

6-V to 75-V 400-uA IQ ORing FET controller

Product details

Vin (min) (V) 6 Vin (max) (V) 75 Number of channels 1 Features FET test, Linear control, Reverse current blocking Iq (typ) (mA) 0.4 Iq (max) (mA) 0.72 FET External single FET IGate source (typ) (µA) 32 IGate source (max) (µA) 45 IGate sink (typ) (mA) 2.8 IGate pulsed (typ) (A) 2.8 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -41, -28 Design support EVM, Reference Design, Simulation Model Rating Catalog Imax (A) 250 VGS (max) (V) 14.7 Shutdown current (ISD) (mA) (A) 0.1 Device type ORing controller Product type ORing controller
Vin (min) (V) 6 Vin (max) (V) 75 Number of channels 1 Features FET test, Linear control, Reverse current blocking Iq (typ) (mA) 0.4 Iq (max) (mA) 0.72 FET External single FET IGate source (typ) (µA) 32 IGate source (max) (µA) 45 IGate sink (typ) (mA) 2.8 IGate pulsed (typ) (A) 2.8 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -41, -28 Design support EVM, Reference Design, Simulation Model Rating Catalog Imax (A) 250 VGS (max) (V) 14.7 Shutdown current (ISD) (mA) (A) 0.1 Device type ORing controller Product type ORing controller
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • 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) PDF | HTML 05 Oct 2021
E-book 11 Ways to Protect Your Power Path 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.

User guide: PDF
Not available on TI.com
Simulation model

LM5050 Unencrypted PSPICE Transient Model

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

LM5050-2 TINA-TI Transient Reference Design

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

LM5050-2 TINA-TI Transient Spice Model

SNVM062.ZIP (11 KB) - TINA-TI Spice Model
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 (...)
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Design guide: PDF
Schematic: PDF
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Design guide: PDF
Schematic: PDF
Reference designs

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Design guide: PDF
Schematic: PDF
Package Pins Download
SOT-23-THN (DDC) 6 View options

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