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Product details

Parameters

Vin (Min) (V) 1.5 Vin (Max) (V) 5.5 Iq (Typ) (mA) 0.0005 Iq (Max) (mA) 0.001 Features Enable, ON/OFF Control Operating temperature range (C) -40 to 105 Design support EVM Rating Catalog Channel(s) controlled (#) 1 FET Internal open-in-new Find other Ideal diode/ORing controllers

Package | Pins | Size

SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 open-in-new Find other Ideal diode/ORing controllers

Features

  • Wide operating voltage range: 1.5 V – 5.5 V
  • Reverse voltage standoff on VIN:
    –6-V absolute maximum
  • Maximum continuous current (IMAX): 1.5 A
  • On-Resistance (RON):
    • 5-V VIN = 79-mΩ (typical)
    • 3.6-V VIN = 91-mΩ (typical)
    • 1.8-V VIN = 141-mΩ (typical)
  • Comparator chip enable (CE)
  • Channel status indication (ST)
  • Low current consumption:
    • 3.6-V VIN Shutdown current (ISD,VIN): 120-nA (typical)
    • 3.6-V VIN Quiescent current (IQ, VIN): 150-nA (typical)

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Description

The LM66100 is a Single-Input, Single-Output (SISO) integrated ideal diode that is well suited for a variety of applications. The device contains a P-channel MOSFET that can operate over an input voltage range of 1.5 V to 5.5 V and can support a maximum continuous current of 1.5 A.

The chip enable works by comparing the CE pin voltage to the input voltage. When the CE pin voltage is higher than VIN, the device is disabled and the MOSFET is off. When the CE pin voltage is lower, the MOSFET is on. The LM66100 also comes with reverse polarity protection (RPP) that can protect the device from a miswired input, such as a reversed battery.

Two LM66100 devices can be used in an ORing configuration similar to a dual diode ORing implementation. In this configuration, the devices pass the highest input voltage to the output while blocking reverse current flow into the input supplies. These devices can compare input and output voltages to make sure that reverse current is blocked through an internal voltage comparator.

The LM66100 is available in a standard SC-70 package characterized for operation over a junction temperature range of –40°C to 125°C.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LM66100 5.5-V, 1.5-A 79-mΩ, Low IQ Ideal Diode With Input Polarity Protection datasheet (Rev. A) Jun. 14, 2019
White papers How to detect and harden a meter against tampering by neutral disconnection Feb. 12, 2020
Application notes Supercapacitor Backup Power Supply w/ Current Limit for Smart Electricity Meter Oct. 31, 2019
Application notes Extend Battery Life Using Load Switches and Ideal Diodes Aug. 16, 2019
White papers 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application notes Eliminate the Voltage Drop and Save Power: An Ideal Diode (Rev. A) 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 What’s with chirping smoke detectors? Mar. 06, 2019
User guides LM66100EVM User's Guide Dec. 18, 2018
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

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
25
Description
The LM66100 evaluation module (EVM) is an assembled and tested circuit for evaluating the LM66100 ideal diode. The LM66100EVM allows the user to apply different input voltages (1.5 V to 5.5 V) under different loading conditions (0 A to 1.5 A), and evaluate configurations such as Dual ORing and (...)
Features
  • EVM enables evaluation of the LM66100 load switch
  • VIN input voltage range: 1.5 V to 5.5 V
  • EVM allows access to the VIN, VOUT, GND, ST and CE pin of the LM66100 Load Switch Device
  • No Input Current Consumption
  • On board CIN and COUT capacitors
EVALUATION BOARDS Download
document-generic User guide
149
Description

The TPS63802HDKEVM is a universal development tool designed to help the users easily and quickly evaluate and test the most common buck-boost converter use-cases. The use-cases include backup power, input current limit, LED driver, digital voltage scaling, bypass mode and precise enable. The user (...)

Features
  • Universal Tool to test most common buck-boost converter use-cases
  • Use-cases: backup power, input current limit, LED driver, digital voltage scaling, bypass mode and precise enable
  • Change quickly between use-cases without soldering
  • All use-cases are tested and the user guide includes quick-start (...)

Design tools & simulation

SIMULATION MODELS Download
SLVMD40.ZIP (49 KB) - PSpice Model
SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Supercapacitor backup power supply with current limit and active cell balancing reference design
PMP30693 — This reference design automatically provides a back-up voltage during a power interruption. It manages the charging of supercapitors and provides reverse blocking protection. The maximum supercapacitor charging current and voltage can be adjusted. When the input voltage fails a buck-boost converter (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 6 View options

Ordering & quality

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