Product details


Vin (Min) (V) 2.7 Vin (Max) (V) 23 Features Analog current monitor, Integrated FET, ON/OFF control Iq (Typ) (mA) 0.4 Operating temperature range (C) -40 to 125 IReverse (Typ) (uA) 4.8 Rating Catalog Channel(s) controlled (#) 1 FET Internal open-in-new Find other Ideal diode/ORing controllers

Package | Pins | Size

VQFN-HR (RPW) 10 4 mm² 2 x 2 open-in-new Find other Ideal diode/ORing controllers


  • Wide operating input voltage range: 2.7 V to 23 V
    • 28-V absolute maximum
    • Withstands negative voltages up to -15 V
  • Integrated back-to-back FETs with low On-Resistance: RON = 28.4 mΩ (typ)
  • Ideal diode operation with true reverse current blocking
  • Fast overvoltage protection
    • 1.2-µs (typ) response time

    • Adjustable overvoltage lockout (OVLO)
  • Fast-trip response to transient overcurrents during steady state
    • 500-ns (typ) response time
    • Latch-off after fault
  • Analog load current monitor output (IMON)
    • Current range: 0.5 A to 5.5 A
    • Accuracy: ±15% (max) (IOUT ≥ 1 A)
  • Active high enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Power Good indication (PG) with adjustable threshold (PGTH)
  • Small footprint: QFN 2 mm x 2 mm, 0.45-mm pitch

All trademarks are the property of their respective owners.

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


The LM73100 is a highly integrated circuit protection and power management solution in a small package. The device provides multiple protection modes using very few external components and is a robust defense against voltage surges, reverse polarity, reverse current and excessive inrush current.

With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the device well suited for power MUX/ORing applications. The device uses linear ORing based scheme to ensure almost zero DC reverse current and emulates ideal diode behavior with minimum forward voltage drop and power dissipation.

Applications with particular inrush current requirements can set the output slew rate with a single external capacitor. Loads are protected from input overvoltage conditions by cutting off the output if input exceeds an adjustable overvoltage threshold. The device also provides fast trip response to transient overcurrent events during steady state.

The device provides an accurate sense of the output load current on the analog current monitor pin.

The device is available in a 2-mm x 2-mm, 10-pin HotRod QFN package for improved thermal performance and reduced system footprint.

The device is characterized for operation over a junction temperature range of –40°C to +125°C.

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

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Data sheet LM73100, 2.7 - 23 V, 5.5 A Integrated Ideal Diode with Input Reverse Polarity and Overvoltage Protection datasheet (Rev. A) Dec. 15, 2020
User guide LM73100 Integrated Ideal Diode Evaluation Module (Rev. A) Dec. 14, 2020
Application note Basics of Power MUX (Rev. A) Oct. 20, 2020
Application note Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) Oct. 07, 2020

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 LM73100 integrated ideal diode evaluation module allows reference circuit evaluation of the LM73100 ideal diode. The LM73100 device is a 2.7-V to 23-V, 5.5-A ideal diode power switch with integrated 28-mΩ FET, always ON reverse current blocking, adjustable undervoltage and overvoltage (...)
  • 2.7 V to 23 V, 5.5 A operation
  • Adjustable output voltage slew rate control
  • Adjustable overvoltage lockout threshold
  • LED status indication for power good output
  • Onboard Schottky diode at output prevents negative spike during overcurrent faults
  • TVS diode for input transient protection

Design tools & simulation

SNOM703.ZIP (81 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
  • (...)
SNOR027.ZIP (108 KB)

CAD/CAE symbols

Package Pins Download
VQFN-HR (RPW) 10 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​