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LT4363IMS-2#TRPBF

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IC SURGE STOPPER HV 12-MSOP

Part Number: LT4363IMS-2#TRPBF

Manufacturer: Analog Devices Inc.

Category: Surge Suppression Ics

Package: 12-TSSOP (0.118", 3.00mm Width)

Datasheet:: LT4363IMS-2#TRPBF.pdf

Description: IC SURGE STOPPER HV 12-MSOP

Select Quantity Stock: 13,372

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

LT4363IMS-2#TRPBF High Voltage Surge Stopper with Current Limit

A comprehensive technical overview of the LT4363IMS-2#TRPBF, a high voltage surge stopper from Analog Devices featuring 4V to 80V wide operating range, adjustable output clamp voltage, fast overcurrent limit, reverse input protection to −60V, and −40°C to 85°C industrial temperature range. Covers device function, core features, electrical specifications, 12-lead MSOP package, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 12-MSOP 4V to 80V

Device Classification High Voltage Surge Stopper with Current Limit

Part Number: LT4363IMS-2#TRPBF

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +85°C

PRODUCT OVERVIEW

What Is the LT4363IMS-2#TRPBF?

LT4363IMS-2#TRPBF is a high voltage surge stopper with current limit from Analog Devices. The device protects loads from high voltage transients by regulating the output during an overvoltage event, such as load dump in vehicles, through the control of an external N-channel MOSFET. The output is limited to a safe value, allowing the load to continue functioning.

The LT4363IMS-2#TRPBF operates with a wide input voltage range of 4V to 80V. It features an adjustable output clamp voltage and a fast overcurrent limit of less than 5µs. Reverse input protection is provided down to −60V, and the shutdown pin can withstand −60V to 100V. The device also includes adjustable undervoltage (UV) and overvoltage (OV) comparator thresholds.

The LT4363 monitors the voltage drop between the SNS and OUT pins to protect against overcurrent faults. An internal amplifier limits the voltage across the current sense resistor to 50mV. In either fault condition, a timer is started inversely proportional to MOSFET stress. Before the timer expires, the FLT pin pulls low to warn of an impending power down. If the condition persists, the MOSFET is turned off. The LT4363-2 variant restarts after a cool-down period. The LT4363IMS-2#TRPBF is offered in a 12-lead MSOP package and is rated for operation from –40°C to +85°C. The device is active and recommended for new designs.

High Voltage Surge Stopper Protects loads from high voltage transients with adjustable output clamp voltage and fast overcurrent limit.

Wide Operating Range 4V to 80V input, reverse input protection to −60V, and shutdown pin withstands −60V to 100V.

Automatic Restart LT4363-2 variant restarts after a cool-down period with less than 1% retry duty cycle during faults.

DEVICE HIGHLIGHTS

Key Features and Benefits of LT4363IMS-2#TRPBF

Wide Operating Voltage Range

Operates from 4V to 80V, making it suitable for a wide variety of power systems, including automotive, avionic, and industrial applications.

High Voltage Surge Protection

Withstands surges over 100V with VCC clamp and protects loads from high voltage transients such as load dump in vehicles.

Fast Overcurrent Limit

Overcurrent limit response of less than 5µs provides rapid protection against overcurrent faults.

Reverse Input Protection

Reverse input protection to −60V with back-to-back MOSFETs, reducing voltage drop and power loss compared to Schottky diodes.

Automatic Restart with Low Retry Duty Cycle

LT4363-2 variant restarts after a cool-down period with less than 1% retry duty cycle during faults, minimizing power dissipation.

Compact 12-Lead MSOP Package

Available in a 12-lead MSOP package with 4.00mm × 3.00mm footprint, ideal for space-constrained designs.

REFERENCE DATA

Technical Specifications for LT4363IMS-2#TRPBF

Part Number	LT4363IMS-2#TRPBF	Manufacturer	Analog Devices
Device Type	High Voltage Surge Stopper with Current Limit	Number of Channels	1
Supply Voltage (Operating)	4V to 80V	Voltage - Clamping	27V Adjustable
Overcurrent Limit Response	<5µs	Reverse Input Protection	−60V
Shutdown Pin Voltage Range	−60V to 100V	Shutdown Current	7µA (Typical)
Current Sense Threshold	50mV	Reverse Input Current	−0.5mA (VCC = −60V)
Control Features	UV/OV Comparator Thresholds, Adjustable Fault Timer, External N-Channel MOSFET Control	Fault Response (LT4363-2)	Restarts After Cool-Down, <1% Retry Duty Cycle
Package / Case	12-TSSOP (0.118", 3.00mm Width)	Supplier Device Package	12-MSOP
Package Body Size	4.00mm × 3.00mm	Package Height	1.1mm (Max)
Mounting Type	Surface Mount	Operating Temperature	-40°C to +85°C
Moisture Sensitivity Level	MSL 1 - Unlimited	RoHS	ROHS3 Compliant
REACH Status	REACH Unaffected	SVHC	No SVHC (21-Jan-2025)
Packaging	Tape & Reel (2,500 per Reel)	Product Status	Active / Recommended for New Designs
ECCN	EAR99	Base Product Number	LT4363

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for LT4363IMS-2#TRPBF

Key Features & Configuration

The LT4363IMS-2#TRPBF offers flexible configuration and robust protection:

Supply Voltage: 4V to 80V wide operating range; 100V surge withstand with VCC clamp
Output Clamp: Adjustable output clamp voltage to protect loads from overvoltage transients
Current Limit: Fast overcurrent limit response of less than 5µs; internal amplifier limits current sense resistor voltage to 50mV
Overcurrent & Overvoltage Protection: Monitors SNS-to-OUT voltage drop for overcurrent; UV/OV comparators monitor input supply
Fault Timer: Adjustable fault timer inversely proportional to MOSFET stress; FLT pin pulls low before power down
Fault Response: LT4363-2 restarts after a cool-down period with less than 1% retry duty cycle

PCB and Power-Supply Guidance

Surge stopper performance depends on layout and component selection:

External N-Channel MOSFET: Controls output during overvoltage events; MOSFET stress inversely proportional to fault timer
Reverse Input Protection: Back-to-back MOSFETs can be used in lieu of a Schottky diode, reducing voltage drop and power loss
Shutdown Pin: Reduces quiescent current to less than 7µA during shutdown; withstands −60V to 100V
UV/OV Thresholds: Two precision comparators monitor input supply for undervoltage and overvoltage conditions
Ground Plane: Use a solid ground plane to minimize noise and ensure low-inductance return paths
Verify the recommended PCB footprint from the official datasheet prior to production

12-LEAD MSOP (4.00mm × 3.00mm)

Pin Configuration Reference for LT4363IMS-2#TRPBF

LT4363

MSOP TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The MSOP package has 12 pins with a 4.00mm × 3.00mm body size and 1.1mm maximum height.

1 VCC Supply Voltage Input - 4V to 80V

2 SNS Current Sense Input - Monitors voltage drop across sense resistor for overcurrent protection

3 OUT Output - Regulated output to load

4 GATE Gate Drive Output - Controls external N-channel MOSFET

5 GND Ground - Device ground connection

6 OV Overvoltage Comparator Input - Programmable overvoltage threshold

7 UV Undervoltage Comparator Input - Programmable undervoltage threshold

8 TMR Fault Timer - External capacitor sets fault timer duration

9 FLT Fault Output - Active-low open-drain output warns of impending power down

10 SHDN Shutdown - Active-low shutdown input; reduces quiescent current to 7µA

11 FB Feedback - Output clamp voltage feedback input

12 GND Ground - Device ground connection

APPLICATION AREAS

Typical Applications for LT4363IMS-2#TRPBF

Automotive Surge Protection

Protects loads from load dump and high voltage transients in 12V and 24V automotive systems.

Avionic & Industrial Surge Protection

Withstands surges over 100V with VCC clamp for avionic and industrial power systems.

Hot Swap & Live Insertion

Provides safe board insertion and removal in live backplane systems with current limit and surge protection.

High Side Switch for Battery Powered Systems

High side switching with overvoltage and overcurrent protection for battery-powered equipment.

Intrinsic Safety Applications

Protects loads in hazardous environments with current limiting and surge protection.

General Purpose High Voltage Protection

Wide 4V to 80V operating range and adjustable protection thresholds make this device suitable for a broad range of high voltage systems.

REPLACEMENT GUIDANCE

Selecting an Alternative for LT4363IMS-2#TRPBF

A replacement for the LT4363IMS-2#TRPBF should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Analog Devices product pages and datasheets.

High voltage surge stopper with 4V to 80V input

Adjustable output clamp voltage

Fast overcurrent limit (<5µs)

Reverse input protection to −60V

Package: 12-MSOP

Temperature range: –40°C to 85°C

Low 7µA shutdown current

Automatic restart after cool-down (LT4363-2)

Family alternatives (same package, different suffix):

Part Number	Package	Fault Response	Carrier	SPQ
LT4363IMS-2#TRPBF	12-MSOP	Auto Restart	Tape & Reel	2,500
LT4363IMS-2#PBF	12-MSOP	Auto Restart	Tube	-
LT4363IMS-1#TRPBF	12-MSOP	Latches Off (Manual Reset)	Tape & Reel	2,500
LT4363CMS-2#TRPBF	12-MSOP	Auto Restart	Tape & Reel	2,500

The LT4363IMS-2#TRPBF is the industrial temperature grade (−40°C to 85°C) tape-and-reel packaged variant in 12-MSOP package (2,500 units per reel).^[1] For tube packaging, consider LT4363IMS-2#PBF.^[2] For the latch-off variant (requires manual reset after fault), consider LT4363IMS-1#TRPBF.^[3] For commercial temperature grade (0°C to 70°C), consider LT4363CMS-2#TRPBF.^[4] Select based on temperature grade, fault response, and packaging requirements.

[1] LT4363IMS-2#TRPBF product status: Active / Recommended for New Designs

[2] LT4363IMS-2#PBF product status: Production

[3] LT4363IMS-1#TRPBF product status: Production

[4] LT4363CMS-2#TRPBF product status: Production

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MANUFACTURER INFORMATION

Analog Devices

The LT4363 (LT4363IMS-2#TRPBF) belongs to the LT4363 family of high voltage surge stoppers from Analog Devices (formerly Linear Technology). The device protects loads from high voltage transients by regulating the output during an overvoltage event, such as load dump in vehicles, through the control of an external N-channel MOSFET. The LT4363 family is available in −1 (latches off) and −2 (auto restart) variants, and in commercial (0°C to 70°C), industrial (−40°C to 85°C), and high temperature (−40°C to 125°C) grades. The LT4363 is recommended for new designs and is widely used in automotive, avionic, industrial surge protection, hot swap, and intrinsic safety applications.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: LT4363IMS-2#TRPBF

Manufacturer: Analog Devices Inc.

Package: 12-TSSOP (0.118", 3.00mm Width)

Package/Case: 12-TSSOP (0.118", 3.00mm Width)

Series: -

Packaging: Tape & Reel (TR)

Product Status: Active

Voltage - Clamping: 27V Adj

Technology: External Switch

Number of Circuits: 1

Applications: -

Grade: Automotive

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 12-MSOP

Frequently Asked Questions

1. How can I order LT4363IMS-2#TRPBF from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of LT4363IMS-2#TRPBF?

We work with qualified suppliers and review sourcing channels, traceability, packaging and product condition before shipment.

3. Are the stock and price of LT4363IMS-2#TRPBF updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

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6. What is the return or replacement process for LT4363IMS-2#TRPBF?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for LT4363IMS-2#TRPBF?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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LT4363IMS-2#TRPBF Procurement and Technical Support

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Part Number: LT4363IMS-2#TRPBF

Manufacturer: Analog Devices Inc.

Package: 12-TSSOP (0.118", 3.00mm Width)

Category: Surge Suppression Ics

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