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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Analog Devices Inc. LTC4362CDCB-2#TRMPBF

Name: LTC4362CDCB-2#TRMPBF
Brand: Analog Devices Inc.
SKU: LTC4362CDCB-2#TRMPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC4362CDCB-2#TRMPBF

Manufacturer:: Analog Devices Inc.

Category:: Power Management - Specialized

Package:: 8-WFDFN Exposed Pad

Datasheet:: LTC4362CDCB-2#TRMPBF.pdf

Description:: IC OVP/OVC PROTECT AUTORTRY 8DFN

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Product details

Overview

LTC4362CDCB-2#TRMPBF from Analog Devices is a monolithic overvoltage/overcurrent protector for 2.5V–5.5V portable systems, featuring an internal 40mΩ N-channel MOSFET, 5.8V ±2% overvoltage threshold, and 1.5A ±20% overcurrent trip. It safeguards USB-powered devices like smartphones and MP3 players against 28V input transients and inductive cable surges without external TVS diodes.

For engineers reviewing the LTC4362CDCB-2#TRMPBF datasheet, LTC4362CDCB-2#TRMPBF pinout, LTC4362CDCB-2#TRMPBF application, or LTC4362CDCB-2#TRMPBF equivalent, key selection criteria include auto-retry overcurrent behavior (130ms restart delay), <1µs overvoltage turn-off, controlled dV/dt ramp-up (3V/ms), PWRGD power-good monitoring, and reverse voltage protection via GATEP-driven external P-MOSFET.

Technical Context

The LTC4362CDCB-2#TRMPBF implements dual-protection logic using independent comparators: an overvoltage comparator triggers MOSFET turn-off within 1µs when VIN exceeds 5.8V, while an overcurrent comparator monitors voltage across a 31mΩ internal sense resistor and trips at 1.5A with 10µs glitch filtering. Its charge pump enables gate drive for the internal MOSFET without external components.

Unlike the latchoff LTC4362-1 variant, the LTC4362CDCB-2#TRMPBF automatically recovers from overcurrent faults after a fixed 130ms delay, while retaining identical overvoltage recovery timing and thermal shutdown (150°C trip, 140°C release). The GATEP pin provides 5.8V-clamped gate drive for external P-channel MOSFETs to block negative input voltages.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5V to 5.5V operating; withstands up to 28V transient - enables use with wall adapters, car chargers, and USB ports without external clamping.
Overvoltage Threshold	5.8V ±2% - precise trip point ensures reliable protection of 5V systems against overvoltage while avoiding nuisance shutdowns.
Overcurrent Threshold	1.5A ±20% - set by internal 31mΩ sense resistor; supports 1.2A continuous load with margin for peak current.
Internal MOSFET R_ON	40mΩ typical - limits conduction loss to ≤75mW at 1.2A, reducing thermal stress in compact DFN package.
Turn-Off Delay (OV)	<1µs - isolates downstream circuitry before transient energy propagates, eliminating need for input TVS in most applications.
Start-Up dV/dt	3V/ms - controls inrush into output capacitors (e.g., 3mA per µF), preventing supply rail collapse during hot-plug events.
PWRGD Timing	65ms delay after gate ramp completes - provides stable power-good assertion only after output voltage settles, enabling safe system boot sequencing.

Pinout & Package

Package: 8-lead DFN (2mm × 3mm), exposed pad soldered to SENSE node for thermal and current-sense integrity. Pin 1 marked with notch/bar; top marking "LFJN" per order info.

Pin/Terminal	Circuit Role	Design Meaning
IN	Supply input with overvoltage sensing	Primary power entry point; monitored for >5.8V events; avalanche-rated to 28V.
OUT	Protected output source	Drives load through internal N-MOSFET; connects directly to downstream 2.5–5.5V circuitry.
SENSE	Current sense node / exposed pad	Internally tied to IN via 31mΩ resistor; exposed pad must be electrically isolated and thermally coupled to PCB.
ON	Active-low enable control	CMOS-compatible input; default 5µA pull-down; high state reduces quiescent current to 1.5µA and forces soft shutdown.
PWRGD	Open-drain power-good status	Pulls low 65ms after gate ramp completes; internal 500kΩ pull-up to OUT; sinks up to 3mA.
GATEP	External P-MOSFET gate driver	Clamped to VIN – 5.8V; 2MΩ pull-down to GND; drives optional P-channel FET for negative voltage blocking.
GND	Device ground reference	Return path for internal circuits and sense resistor; must be low-impedance connection to system ground plane.

Key Features

Feature	Design Value
Avalanche-rated internal MOSFET	Withstands single-pulse inductive energy (EAS = 10mJ) without external TVS or input capacitor in most cable-transient scenarios.
Auto-retry overcurrent response	LTC4362CDCB-2#TRMPBF resets automatically after 130ms fault delay - eliminates manual reset requirement in consumer portable devices.
Controlled dV/dt power-up	Ramps VOUT at 3V/ms to limit inrush current (I_INRUSH = C_OUT × 3 mA/µF), preventing brownout during capacitor charging.
Reverse voltage protection support	GATEP pin drives external P-MOSFET with 5.8V gate clamp - blocks negative inputs while protecting external FET gate oxide.
ESD robustness	±25kV HBM on IN-to-GND with ≥1µF C_OUT - meets IEC 61000-4-2 Level 4 for handheld device front-end protection.

Applications

USB Power Input Protection	Smartphone Charging Circuit
Use Scenario: USB port supplies 5V power to a mobile device with multiple input sources (USB, wall adapter, car charger), risking overvoltage from misconnected adapters. IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF acts as primary input protector, placed between connector and system PMIC; responds to 5.8V OV in <1µs and enforces 130ms lockout before retry. Use Value: Eliminates need for discrete TVS diodes and input bulk capacitors, reducing BOM count and PCB area in space-constrained USB-C designs.	Use Scenario: Smartphone motherboard accepts power from USB or wireless charging IC, requiring robust protection against hot-plug transients and accidental 12V/24V adapter insertion. IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF serves as first-line defense in power path; its 40mΩ R_ON minimizes voltage drop, while GATEP enables reverse-voltage blocking via external P-MOSFET. Use Value: Enables single-board compatibility with multiple power sources while maintaining <100mV dropout at 1.2A and surviving ±25kV ESD events per IEC 61000-4-2.
MP3/MP4 Player Power Management	Digital Camera Battery Charging Interface
Use Scenario: Portable media player uses Li-ion battery and dual-input charging (USB + AC adapter); susceptible to overvoltage if user plugs in incorrect wall adapter. IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF sits upstream of battery charger IC; provides overvoltage cutoff and auto-retry overcurrent handling to prevent charger IC damage. Use Value: Prevents permanent failure from 20V hot-plug events (tested per Figure 7), with no external components required beyond 10µF C_OUT.	Use Scenario: Digital camera accepts power from USB or proprietary battery pack; requires isolation from negative voltage if battery is inserted backward or disconnected under load. IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF controls power delivery to camera sensor and processor; GATEP drives external P-MOSFET to block reverse polarity at IN pin. Use Value: Adds reverse-voltage protection without adding series diode drop or complex controller, preserving 5V rail accuracy for image sensor analog circuitry.

USB Power Input Protection

Smartphone Charging Circuit

Use Scenario: USB port supplies 5V power to a mobile device with multiple input sources (USB, wall adapter, car charger), risking overvoltage from misconnected adapters.

IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF acts as primary input protector, placed between connector and system PMIC; responds to 5.8V OV in <1µs and enforces 130ms lockout before retry.

Use Value: Eliminates need for discrete TVS diodes and input bulk capacitors, reducing BOM count and PCB area in space-constrained USB-C designs.

Use Scenario: Smartphone motherboard accepts power from USB or wireless charging IC, requiring robust protection against hot-plug transients and accidental 12V/24V adapter insertion.

IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF serves as first-line defense in power path; its 40mΩ R_ON minimizes voltage drop, while GATEP enables reverse-voltage blocking via external P-MOSFET.

Use Value: Enables single-board compatibility with multiple power sources while maintaining <100mV dropout at 1.2A and surviving ±25kV ESD events per IEC 61000-4-2.

MP3/MP4 Player Power Management

Digital Camera Battery Charging Interface

Use Scenario: Portable media player uses Li-ion battery and dual-input charging (USB + AC adapter); susceptible to overvoltage if user plugs in incorrect wall adapter.

IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF sits upstream of battery charger IC; provides overvoltage cutoff and auto-retry overcurrent handling to prevent charger IC damage.

Use Value: Prevents permanent failure from 20V hot-plug events (tested per Figure 7), with no external components required beyond 10µF C_OUT.

Use Scenario: Digital camera accepts power from USB or proprietary battery pack; requires isolation from negative voltage if battery is inserted backward or disconnected under load.

IC Role / Device Role / Timing Role: LTC4362CDCB-2#TRMPBF controls power delivery to camera sensor and processor; GATEP drives external P-MOSFET to block reverse polarity at IN pin.

Use Value: Adds reverse-voltage protection without adding series diode drop or complex controller, preserving 5V rail accuracy for image sensor analog circuitry.

Equivalent & Alternatives

The following parts are listed as comparable options for similar overvoltage/overcurrent protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LTC4362CDCB-1#TRMPBF	Latchoff behavior after overcurrent fault - remains off until IN cycled below 2.1V or ON pin pulsed high >500µs.	Suitable for systems requiring manual intervention or host MCU-controlled reset after overcurrent.	Select LTC4362CDCB-1#TRMPBF only if deterministic fault holdover is required; LTC4362CDCB-2#TRMPBF preferred for consumer auto-recovery.
LT4356IMS#PBF	Wider input range (4V–80V), adjustable OV threshold (1.215V reference), reverse input protection to –60V, no integrated MOSFET (external FET required).	Targeted at industrial/high-voltage applications (e.g., 24V/48V systems), not portable 5V devices.	LT4356IMS#PBF requires external MOSFET, gate driver, and feedback resistors - higher BOM cost and design effort than LTC4362CDCB-2#TRMPBF's integrated solution.

Compared with LTC4362CDCB-1#TRMPBF, the LTC4362CDCB-2#TRMPBF offers automatic fault recovery critical for unattended portable devices; versus LT4356IMS#PBF, it delivers lower system cost and smaller footprint for 5V USB-class protection but lacks high-voltage flexibility.

Availability

LTC4362CDCB-2#TRMPBF is available at Aetrix Electronics and suitable for USB protection, smartphone charging circuits, MP3/MP4 player power management, and digital camera battery interfaces requiring stable component supply across production volumes.

Supply support for LTC4362CDCB-2#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets.

The LTC4362 family was designed specifically for overvoltage/overcurrent protection in portable electronics with multiple power sources, emphasizing integration, transient resilience, and minimal external component count.

FAQ

What is the overvoltage protection threshold of the LTC4362CDCB-2#TRMPBF?

The LTC4362CDCB-2#TRMPBF has a precisely trimmed overvoltage threshold of 5.8V ±2%, specified over temperature. This value is fixed and not adjustable; it triggers immediate turn-off of the internal 40mΩ N-channel MOSFET when the IN pin voltage exceeds this level, isolating the protected load within 1µs. Recovery requires VIN to fall below 5.7V (5.8V minus 100mV hysteresis) for 130ms before restart.

How does the LTC4362CDCB-2#TRMPBF differ from the LTC4362CDCB-1#TRMPBF?

The LTC4362CDCB-2#TRMPBF implements auto-retry overcurrent protection, restarting automatically after a 130ms delay following a fault. In contrast, the LTC4362CDCB-1#TRMPBF latches off permanently after overcurrent until IN drops below 2.1V or the ON pin is pulsed high for >500µs. Both share identical overvoltage response, pinout, package, and electrical specifications otherwise.

Can the LTC4362CDCB-2#TRMPBF protect against negative input voltages?

The LTC4362CDCB-2#TRMPBF itself does not block negative voltages at the IN pin, but its GATEP pin drives an optional external P-channel MOSFET to provide reverse-voltage protection. When VIN goes negative, the internal 2MΩ pull-down on GATEP turns on the external P-MOSFET's body diode in reverse, blocking current flow. The GATEP clamp ensures V_GS stays within safe limits (≤5.8V) even during positive transients.

What is the purpose of the SENSE pin and exposed pad on the LTC4362CDCB-2#TRMPBF?

The SENSE pin on the LTC4362CDCB-2#TRMPBF connects internally to the drain of the 40mΩ N-channel MOSFET and to a 31mΩ sense resistor tied to IN; it enables overcurrent detection by measuring voltage drop across that resistor. The exposed pad is electrically connected to SENSE and must be soldered to an isolated PCB copper area to serve both thermal dissipation and current-sensing return path functions - not grounding.

Does the LTC4362CDCB-2#TRMPBF require external components for basic overvoltage protection?

No, the LTC4362CDCB-2#TRMPBF requires no external components for core overvoltage protection: its avalanche-rated internal MOSFET handles 28V transients without TVS diodes, and its controlled dV/dt ramp-up eliminates inrush-related issues. Only an output capacitor (C_OUT, typically 10µF) is needed for stability; SENSE-to-IN short disables overcurrent, and GATEP-to-IN ties disable reverse-voltage drive if unused.

LTC4362CDCB-2#TRMPBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-WFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: Handheld/Mobile Devices

Current - Supply:: 220µA

Voltage - Supply:: 2.5V ~ 28V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (2x3)

LTC4362CDCB-2#TRMPBF FAQ

1.How can I place an order for LTC4362CDCB-2#TRMPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC4362CDCB-2#TRMPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LTC4362CDCB-2#TRMPBF reliable?

The price and inventory of LTC4362CDCB-2#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4362CDCB-2#TRMPBF is usually 5 days.

3.What payment methods are accepted for LTC4362CDCB-2#TRMPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4362CDCB-2#TRMPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC4362CDCB-2#TRMPBF?

LTC4362CDCB-2#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC4362CDCB-2#TRMPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LTC4362CDCB-2#TRMPBF?

For technical support, including LTC4362CDCB-2#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4362CDCB-2#TRMPBF requirements.

6.How does Aetrix verify that LTC4362CDCB-2#TRMPBF is sourced from the original manufacturer or authorized distributors?

All LTC4362CDCB-2#TRMPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC4362CDCB-2#TRMPBF meets industry standards.

7.What is the process for return or replacement of LTC4362CDCB-2#TRMPBF?

All LTC4362CDCB-2#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4362CDCB-2#TRMPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LTC4362CDCB-2#TRMPBF part is unused and in its original packaging.

Return procedure for LTC4362CDCB-2#TRMPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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