LTC4360-1/LTC4360-2 - Overvoltage Protection Controller

Features

  • 2.5V to 5.5V Operation
  • Overvoltage Protection Up to 80V
  • No Input Capacitor or TVS Required for Most Applications
  • 2% Accurate 5.8V Overvoltage Threshold
  • <1μs Overvoltage Turn-Off, Gentle Shutdown
  • Controls N-Channel MOSFET
  • Adjustable Power-Up dV/dt Limits Inrush
  • Reverse Voltage Protection (LTC4360-2)
  • Power Good Output
  • Low Current Shutdown (LTC4360-1)
  • Available in a Tiny 8-Lead SC70 Package
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LTC4360 Typical Application
LTC4360 Typical Application

Description

The LTC4360 overvoltage protection controller safeguards 2.5V to 5.5V systems from power supply overvoltage. It is designed for portable devices with multiple power supply options including wall adaptors, car battery adaptors and USB ports.

The LTC4360 controls an external N-channel MOSFET in series with the input power supply. During overvoltage transients, the LTC4360 turns off the MOSFET within 1μs, isolating downstream components from the input supply. Inductive cable transients are absorbed by the MOSFET and load capacitance. In most applications, the LTC4360 provides protection from transients up to 80V without requiring transient voltage suppressors or other external components.

The LTC4360 has a delayed start-up and an adjustable dV/dt ramp-up for inrush current limiting. A PWRGD pin provides power good monitoring for VIN. Following an overvoltage condition, the LTC4360 automatically restarts with a start-up delay. The LTC4360-1 features a soft shutdown controlled by the ON pin, while the LTC4360-2 controls an optional external P-channel MOSFET for negative voltage protection.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC4360CSC8-1#PBF SC-70 SC8 C 05-08-1639 Yes
LTC4360CSC8-1#TRMPBF SC-70 SC8 C 05-08-1639 Yes
LTC4360CSC8-1#TRPBF SC-70 SC8 C 05-08-1639 Yes
LTC4360CSC8-2#PBF SC-70 SC8 C 05-08-1639 Yes
LTC4360CSC8-2#TRMPBF SC-70 SC8 C 05-08-1639 Yes
LTC4360CSC8-2#TRPBF SC-70 SC8 C 05-08-1639 Yes
LTC4360ISC8-1#PBF SC-70 SC8 I 05-08-1639 Yes
LTC4360ISC8-1#TRMPBF SC-70 SC8 I 05-08-1639 Yes
LTC4360ISC8-1#TRPBF SC-70 SC8 I 05-08-1639 Yes
LTC4360ISC8-2#PBF SC-70 SC8 I 05-08-1639 Yes
LTC4360ISC8-2#TRMPBF SC-70 SC8 I 05-08-1639 Yes
LTC4360ISC8-2#TRPBF SC-70 SC8 I 05-08-1639 Yes


LTC4360 Package Drawing
LTC4360 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC4360CSC8-1#PBF SC-70 C $1.64 Yes
LTC4360CSC8-1#TRMPBF SC-70 C $1.64 $1.20 Yes
LTC4360CSC8-1#TRPBF SC-70 C $1.64 $1.15 Yes
LTC4360CSC8-2#PBF SC-70 C $1.64 Yes
LTC4360CSC8-2#TRMPBF SC-70 C $1.64 $1.20 Yes
LTC4360CSC8-2#TRPBF SC-70 C $1.64 $1.15 Yes
LTC4360ISC8-1#PBF SC-70 I $1.81 Yes
LTC4360ISC8-1#TRMPBF SC-70 I $1.81 $1.32 Yes
LTC4360ISC8-1#TRPBF SC-70 I $1.81 $1.27 Yes
LTC4360ISC8-2#PBF SC-70 I $1.81 Yes
LTC4360ISC8-2#TRMPBF SC-70 I $1.81 $1.32 Yes
LTC4360ISC8-2#TRPBF SC-70 I $1.81 $1.27 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1505A LTC4360-1/LTC4360-2 Overvoltage Protection Controller with Shutdown/Reverse Voltage Protection $50.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC4360ISC8-1#PBF SC-70 I $1.81 Yes
LTC4360ISC8-1#TRMPBF SC-70 I $1.81 $1.32 Yes
LTC4360ISC8-1#TRPBF SC-70 I $1.81 $1.27 Yes
LTC4360ISC8-2#PBF SC-70 I $1.81 Yes
LTC4360ISC8-2#TRMPBF SC-70 I $1.81 $1.32 Yes
LTC4360ISC8-2#TRPBF SC-70 I $1.81 $1.27 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • USB Protection
  • Handheld Computers
  • Cell/Smart Phones
  • MP3/MP4 Players
  • Digital Cameras

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC4360-1
LTC4360-2

Technical Support