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Ideal diode/ORing controllers

LM7310

ACTIVE

2.7-V to 23-V, 28-mΩ, 5.5-A load switch with integrated ideal diode & overvoltage protection

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Data sheet

LM7310

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 2.7 Vin (Max) (V) 23 Number of channels (#) 1 Features Analog current monitor, Gate ON/OFF control, Overvoltage protection, Power good signal, Reverse current blocking, Reverse polarity protection, Short circuit protection, Thermal shutdown Iq (Typ) (mA) 0.4 Iq (Max) (mA) 0.6 FET Integrated single FET Operating temperature range (C) -40 to 125 IReverse (Typ) (uA) 4.8 Design support Calculation Tool, EVM, Simulation Model Rating Catalog
Vin (Min) (V) 2.7 Vin (Max) (V) 23 Number of channels (#) 1 Features Analog current monitor, Gate ON/OFF control, Overvoltage protection, Power good signal, Reverse current blocking, Reverse polarity protection, Short circuit protection, Thermal shutdown Iq (Typ) (mA) 0.4 Iq (Max) (mA) 0.6 FET Integrated single FET Operating temperature range (C) -40 to 125 IReverse (Typ) (uA) 4.8 Design support Calculation Tool, EVM, Simulation Model Rating Catalog
VQFN-HR (RPW) 10 4 mm² 2 x 2
  • 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
  • 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

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.

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.

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Technical documentation

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* Data sheet LM73100, 2.7 - 23 V, 5.5 A Integrated Ideal Diode with Input Reverse Polarity and Overvoltage Protection datasheet (Rev. A) PDF | HTML 15 Dec 2020
EVM User's guide LM73100 Integrated Ideal Diode Evaluation Module (Rev. A) PDF | HTML 14 Dec 2020
Application note Basics of Power MUX (Rev. A) PDF | HTML 20 Oct 2020
Application note Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) PDF | HTML 07 Oct 2020

Design & development

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

Evaluation board

LM73100EVM — LM73100 integrated ideal diode evaluation module

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, (...)
User guide: PDF | HTML
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Simulation model

LM7310 PSpice Unencrypted Transient Model (Rev. A)

SNOM703A.ZIP (116 KB) - PSpice Model
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Calculation tool

LM73100 Design Calculator

SNOR027.ZIP (108 KB)
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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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VQFN-HR (RPW) 10 View options

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