Product details


Vin (Min) (V) 5 Vin (Max) (V) 75 Features AUX input, Linear control Iq (Typ) (mA) 0.4 Iq (Max) (mA) 0.79 IGate source (Typ) (uA) 31 IGate source (Max) (uA) 41 IGate sink (Typ) (mA) 2.8 IGate pulsed (Typ) (A) 2.8 Operating temperature range (C) -40 to 125, -40 to 150 IReverse (Typ) (uA) VSense reverse (Typ) (mV) -28 /-41 Design support EVM, Simulation Model Rating Automotive, Catalog Channel(s) controlled (#) 1 FET External VGS (Max) (V) 14 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


  • 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)

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


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.

open-in-new Find other Ideal diode/ORing controllers
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LM5050-1 ACTIVE 5-V to 75-V, 400-uA IQ ideal diode controller This product is A self-protected 5.5V, 1.5A load switch with optional output discharge.

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet LM5050-1, LM5050-1-Q1 High-Side OR-ing FET Controller datasheet (Rev. F) Dec. 23, 2019
Functional safety information LM5050-1-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 03, 2019
E-book 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
User guide 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

document-generic User guide

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.



  • Assembled LM5050MK-1EVAL Board

Design tools & simulation

SNVM010.ZIP (347 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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Reference designs

61W Automotive Dual Output Synchronous Buck Converter Reference Design
PMP10655 — PMP10655 is a dual-output synchronous buck converter reference design using the LM5140 controller IC. The reference design accepts an input voltage between 6Vin and 18Vin and is capable of supplying a maximum of 8A of continuous current (14A Peak) to the load, per output. Vout1 and Vout2 maintain (...)
document-generic Schematic document-generic User guide
Automotive Reverse Polarity Protection Reference Design
TIDA-00992 — Reverse polarity is standard protection required in an automotive environment. When battery cables are detached and reconnected there is a probability of connecting the wires to wrong terminals of the battery. This mistake could damage the components in Electronic Control Units (ECU). To avoid (...)
document-generic Schematic document-generic User guide
Automotive Boost Converter Reference Design 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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