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Product details

Parameters

Vin (Min) (V) 5 Vabsmin (Min) (V) -0.3 Vin (Max) (V) 75 Vabsmax (Max) (V) 100 Iq (Typ) (mA) 0.4 Iq (Max) (mA) 0.72 IGate source (Typ) (uA) 31 IGate source (Max) (uA) 41 IGate sink (Typ) (mA) 2.8 IGate pulsed (Typ) (A) 2.8 Features AUX Input, Linear Control Operating temperature range (C) -40 to 125 Approx. price (US$) 0.75 | 1ku IReverse (Typ) (uA) VSense reverse (Typ) (mV) -28 /-41 Design support EVM, Simulation Model Rating Catalog Channel(s) controlled (#) 1 VGS (Max) (V) 14 FET External open-in-new Find other Ideal diode/ORing controllers

Package | Pins | Size

SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Ideal diode/ORing controllers

Features

  • 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)

All trademarks are the property of their respective owners.

open-in-new Find other Ideal diode/ORing controllers

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.

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Technical documentation

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Type Title Date
* Datasheet LM5050-1, LM5050-1-Q1 High-Side OR-ing FET Controller datasheet (Rev. F) Dec. 23, 2019
More literature 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application notes Basics of Ideal Diodes May 09, 2019
Application notes Basics of Power Switches (Rev. A) Apr. 26, 2019
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016
Application notes Achieving Stable VGS Using LM5050-1 with Low Current and Noisy Input Supply Feb. 12, 2015
User guides AN-2087 LM5050-1EVAL Evaluation Board (Rev. A) May 06, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The LM5050-1 evaluation board is designed to demonstrate the capabilities of the LM5050-1 OR-ing Diode Controller. One high side N-channel power MOSFET is used. The evaluation board is designed to highlight applications with a small solution size.

Features

Contents:

  • Assembled LM5050MK-1EVAL Board
EVALUATION BOARDS Download
document-generic User guide
Description
The PSEMTHR24EVM-081 mother board features 24 port 2pair/4pair PSE system. When paired with the TPS23881EVM-083 48-channel 4-Pair (90W) PSE daughter card or TPS23882EVM-084 24-channel 2-Pair (30W) PSE daughter card and PSEMCUDAUEVM-082 MCU daughter card (sold separately), users can evaluate this (...)
Features
  • 24 port PoE PSE system and expandable to 48 ports
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE802.3bt compliance
  • Mutiple power supplies
  • Supporting Legacy PD

Design tools & simulation

SIMULATION MODELS Download
SNVM010.ZIP (347 KB) - PSpice Model
SIMULATION MODELS Download
SNVM060.ZIP (8 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVM061.TSC (132 KB) - TINA-TI Reference Design

Reference designs

REFERENCE DESIGNS Download
Protected DC-bus input power and control power supply reference design for low-voltage servo drives
TIDA-010070 — This reference design uses an ORing controller, the LM5050-1 to provide protection against reverse polarity and reverse current. In conjunction, the LM5069 hot swap controller is used for overcurrent, over voltage, under voltage protection, and inrush current limitation. The design also features (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24-port (PoE 2, 4-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23881 — This reference design showcases a Type-4 (PoE 2, 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 90W per port for for IEEE 802.3bt (PoE 2) applications and up to 120W per port for non-standard applications. Based on the MSP430F523x family, our (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23882 — This reference design showcases a Type-3, 30W, 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family, TI's TPS2388x FirmPSE (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
EtherCAT P® One Cable for Power and EtherCAT® Reference Design
TIDA-01461 This reference design shows a physical implementation of the power couple in circuitry of an EtherCAT P® power sourcing device. The reference design is designed to meet all requirements from the official EtherCAT P implementation guide. This includes features like reverse polarity protection (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
8 Channel, 2-A High-Side Driver Reference Design for Digital Output Modules
TIDA-01552 — This eight-channel, parallel, 2-A, high-side, digital output reference design for factory automation applications like PLCs shows the diagnostic features and the power density of new Texas Instruments high-side driver components (such as TPS27S100). Each output can individually measure the output (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24VDC 10A eFuse and Protection Circuit for Programmable Logic Controllers (PLC)
TIDA-00233 This sub system design shows an IC based implementation of  over voltage, over current, reverse current,  reverse polarity and miss wire protection which is more accurate, lower power and faster compared to fuses, PTCs and diodes. Programmable Logic Controller (PLC) I/O modules connected (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Boost Converter with Reverse Battery Protection
PMP7936 — PMP7936 is a boost converter capable of 138W output power and targeted for automotive appli-cations. This design uses the LM5122 synchronous boost current-mode PWM controller. The circuit will start at a minimum input of 6.5V and has an operating input voltage range of 4.5V to 42V. The output is (...)

CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 6 View options

Ordering & quality

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